Document:

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                                                                       Exhibit 2

                                 OFFICE LEASE
                                     between

                              WGP ASSOCIATES, LLC,
                          a Virginia limited liability
                                     company
                                  (as Landlord)
                                       and

             ONEPOINT COMMIUNICATIONS CORP., a Delaware corporation
                                   (as Tenant)

         Section
         Page

         1.       PRINCIPAL TERMS .....................................1
          2.      GENERAL COVENANTS ...................................2
          3.      TERM ................................................3
          4.      RENT ................................................3
          5.      COMPLETION OR REMODELING OF THE PREMISES ............3
          6.      OPERATING EXPENSES ..................................3
          7.      SERVICES ............................................3
          8.      QUIET ENJOYMENT .....................................5
          9.      DEPOSIT .............................................5
          10.     CHARACTER OF OCCUPANCY ..............................6
          11.     MAINTENANCE, ALTERATIONS AND REENTRY BY LANDLORD ....6
          12.     ALTERATIONS AND REPAIRS BY TENANT ...................7
          13.     CONSTRUCTION LIENS ..................................8
          14.     SUBLETTING AND ASSIGNMENT ...........................8
          15.     DAMAGE TO PROPERTY ..................................9
          16.     INDEMNITY TO LANDLORD ..............................10
          17.     SURRENDER AND NOTICE ...............................10
          18.     INSURANCE, CASUALTY, AND RESTORATION OF PREMISES ...10
          19.     CONDEMNATION .......................................11
          20.     DEFAULT BY TENANT ..................................11
          21.     DEFAULT BY LANDLORD ................................14
          22.     SU-BORDINATION AND ATTORNMENT ......................14
          23.     REMOVAL OF TENANT'S PROPERTY .......................15
          24.     HOLDING OVER: TENANCY MONTH-TO-MONTH ...............15
          25.     PAYMENTS AFTER TERMINATION . .......................15
          26.     STATEMENT OF PERFORMANCE ...........................15
          27.     MISCELLANEOUS ......................................15
          28.      AUTHORITIES FOR ACTION AND NOTICE .................17
          29.      PARKING............................................18
          30.      SUBSTITUTE PREMISES ...............................18
          31.      BROKERAGE .........................................18
          32.      COUNTERPARTS ......................................18
          33.      ADDENDUM/EXHIBITS .................................18
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                                 LEASE AGREEMENT
        THIS LEASE, dated as of July 15, 1999, is by and between WGP ASSOCIATES,
      LLC, a Virginia limited liability company ("Landlord") and ONEPOINT
      COMMUNICATIONS CORP., a Delaware corporation ("Tenant").

                                   WITNESSETH:

          1. PRINCIPAL TERMS. Capitalized terms, first appearing in quotations
     in this Section, elsewhere in the Lease or any Exhibits, are definitions of
     such terms as used in the Lease and Exhibits and shall have the defined
     meaning whenever used.

          1.1 "BUILDING": Worldgate Plaza 1, 12901 Worldgate Drive, Herndon,
     Virginia

          1.2 "PREMISES": approximately 80,582 rentable square feet comprising
     the 5th, 6th, 7th and 8th floor of the Building

          1.3 "INITIAL TERM": 10 years, 0 months "Commencement Date": November
     1, 1999 "Expiration Date": October 31, 2009

          1.4 "BASE RENT": Period Annual Per Rentable Monthly Square Foot Rate

          1.5       OPERATING EXPENSES:                       Base
          Year: 2000
                                                              Pro Rata
          Share: 100%

          1.6      "DEPOSIT":

          1.7 "PERMITTED USE": Primarily as general offices with ancillary use
     for computer room and related uses in accordance with Section 10 1.8
     "GUARANTOR": [Not applicable]

          1.9 PARKING: 322 spaces (10 of which shall be reserved spaces in a
     mutually agreed upon location and the balance unreserved, unassigned
     spaces) in the Parking Garage or surface parking for the Building in
     accordance with Section 29
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 1.10 LANDLORD'S NOTICE ADDRESS:

WGP ASSOCIATES, LLC, c/o Miller Global Properties, LLC, 4643
S. Ulster Street, Suite 1500, Denver, CO 80237, Attn: Donald
E. Spiegleman, Esq. or Mr. Paul Hogan

 with a copy to:

 1.11RENT PAYMENT ADDRESS:
 1. 12 LANDLORD'S TAX 1. D.:
 1. 13   TENANT'S NOTICE ADDRESS:
         Precommencement Address:
         Post Commencement Address:
 1. 14 TENANT'S TAX I.D.:
 1. 15 LANDLORD'S BROKER:
 1. 16 COOPERATING BROKER:

 1. 17 ATTACHMENTS:
 Charles E. Smith Companies, 2121 Crystal Drive, Suite 199 Arlington, VA 22202,
 Attn: Steven Ranck WGP ASSOCIATES, LLC, c/o Miller Global Properties, LLC, 4643
 S. Ulster Street, Suite 1500, Denver, CO 80237 84-1474051 Attn: Joanne DiGuido
 2201 Waukegan Road, Suite E-200 Bannockburn, IL 60015 (same) Charles E. Smith
 Real Estate Services, L.P. Julien J. Studley, Inc. [check if applicable]
 Addendum Work Letter Exhibit A - The Premises Exhibit B - Real Property Exhibit
 C - Operating Expenses Exhibit D - Commencement Certificate Exhibit E - Rules
 and Regulations Exhibit F - Janitorial and Security Specifications Exhibit G -
 Statement of Performance (Estoppel) Exhibit H - HVAC Rates Exhibit I - Letter
 of Credit Exhibit J - Parking Area

     2. GENERAL COVENANTS. Tenant covenants and agrees to pay Rent and perform
 the obligations hereafter set forth and in consideration therefor Landlord
 leases to Tenant the Premises as depicted on the plat attached as Exhibit A,
 together with a non-exclusive right, subject to the provisions hereof, to use
 plazas, common areas, or other areas on the real property legally described on
 Exhibit B (the "Real Property") designated by Landlord for the exclusive or
 nonexclusive use of the tenants of the Building and Plaza II (as hereinafter
 defined), including the Parking Garage ("Common Areas"). The "Building"
 includes the building depicted and labeled as Worldgate Plaza Tower I on the
 attached Exhibit A-1, inclusive of the 5th, 6th, 7th and 8th floors, the
 elevators and stairs serving such floors, and the elevator lobby on the first
 floor, exclusive of the parking garage portion lying within the footprint of
 the Building depicted on Exhibit A-1. The Building and the adjacent building to
 be constructed as depicted and labeled on Exhibit A-1 as Worldgate Plaza Tower
 11 (" Plaza 11"), Real Property, Common Areas, and appurtenances are
 hereinafter collectively sometimes called the "Building Complex."

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     3. TERM. The Initial Term of the Lease commences at 12:01 a.m. on the
Commencement Date and terminates at 12:00 midnight on the Expiration Date (the
Initial Term together with any extensions thereof is herein referred to as the
"Term. ") -

     4. RENT. Subject to the provisions below and the provisions of the Work
 Letter, commencing on the Commencement Date and on the first day of each month
 thereafter, Tenant shall pay Base Rent in the amount stated in Section 1.4, in
 advance without notice (all amounts, including Base Rent, to be paid by Tenant
 pursuant to this Lease as the context requires are sometimes referred to
 collectively as "Rent(s)"). Rents shall be paid without set off, abatement, or
 diminution, at the address set forth in Section 1.11 above, or at such other
 place as Landlord from time to time designates in writing.

      5. COMPLETION OR REMODELING OF THE PREMISES.
         -----------------------------------------

           5.1 Provisions regarding remodeling or tenant finish work in the
 Premises, if any, are set forth in a work letter attached to this Lease (the
 "Work Letter"). "Initial Tenant Finish" means the Premises in its as-is
 condition as modified by all work, if any, performed by Landlord at its expense
 prior to the Commencement Date in accordance with the Work Letter or paid for
 by Landlord from the Allowance in accordance with the Work Letter, as
 applicable. Except as provided in the Work Letter, Landlord has no obligation
 for the completion or remodeling of the Premises, and Tenant accepts the
 Premises in its "as is" condition on the Commencement Date, subject to the
 provisions of the Work Letter. If Landlord is delayed in delivering the
 Premises or a portion thereof to Tenant in accordance with the Work Letter, the
 provisions of the Work Letter shall control delivery of such space, the
 commencement of Rent and the determination of the Commencement Date. The
 postponement of Tenant's obligation to pay Rent is in full settlement of all
 claims which Tenant may otherwise have by reason of such delay. If the
 Commencement Date is delayed in accordance with the Work Letter, the Expiration
 Date shall be extended so that the Term will continue for the full period set
 forth in Section 1.3. As soon as the Term commences, Landlord and Tenant agree
 to execute a commencement agreement in the form attached as Exhibit D, setting
 forth the exact Commencement Date and Expiration Date.

           5.2 Except as provided in the Work Letter, *including the provisions
 regarding Punchlist Items, taking possession of the Premises by Tenant is
 conclusive evidence that the Premises are in the condition agreed between
 Landlord and Tenant and acknowledgment by Tenant of satisfactory completion of
 any work which Landlord has agreed to perform.

     6. OPERATING EXPENSES. Tenant shall pay additional Rent in accordance with
Exhibit C attached hereto.

      7. SERVICES.
         --------

           7.1 Subject to the provisions below, Landlord agrees, without charge,
 in accordance with standards determined by Landlord from time to time for the
 Building: (1) to furnish running water at those points of supply for general
 use of tenants of the Building (consistent with the standards observed by
 operators of first class office buildings in the northern Virginia market); (2)
 during Ordinary Business Hours to furnish to interior Common Areas heated or
 cooled air (as applicable), electrical current, janitorial services, and
 maintenance; (3) during Ordinary Business Hours to furnish heated or cooled air
 to the Premises for standard office use provided the reasonable recommendations
 of Landlord's engineer regarding occupancy and use of the Premises are complied
 with by Tenant; (4) to furnish, subject to availability and capacity of
 building systems, unfiltered treated chilled water for use in Tenant's packaged
 HVAC systems provided that such systems are approved by Landlord, including
 strainers, pumping systems and controls; (5) to provide, during Ordinary
 Business Hours, the general use of passenger elevators for ingress and egress
 to and from the Premises (at least one such elevator shall be available at all
 times except in the case of emergencies or repair); (6) to provide janitorial
 services for the Premises in accordance with the attached Exhibit F (including
 window washing of the outside of exterior windows); and (7) to cause electric
 current to be supplied to the Premises for Tenant's Standard Electrical Usage
 (items (1) through (7) are collectively called "Services"). "Tenant's Standard
 Electrical Usage" means electricity for normal office purposes including
 fluorescent and incandescent lighting (including task and task ambient lighting
 systems) and for normal

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 office equipment, including duplicating (reproduction) machines and personal
 computers (provided they do not require any additional voltage, special
 electrical or HVAC requirements beyond the systems existing in the Premises),
 and internal communications systems. "Ordinary Business Hours" means 8:00 a.m.
 to 6:00 p.m. Monday through Friday and 8:00 a.m. to 1:00 p.m. on Saturdays,
 Legal Holidays excepted. "Legal Holidays" mean New Year's Day, Martin Luther
 King Day, Inauguration Day, Presidents' Day, Memorial Day, Independence Day,
 Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, Christmas Day, and
 such other national holidays hereafter established by the United States
 Government. The security system shall be operative at all times except as
 required for repair or maintenance and shall restrict access (in accordance
 with the security system specifications) to the main Building lobby and access
 to individual floors from the elevator on such days and at such hours as Tenant
 may request by notice to Landlord. Any security system or other security
 measures (collectively "security") that Landlord may undertake are for
 protection of the physical structures only and shall not be relied upon by
 Tenant, its agents, employees or invitees to protect their person, or property,
 including Tenant's Property. Tenant shall not do anything to circumvent or
 allow others to circumvent security. Landlord shall not be liable for any
 failure of any security to operate or for any breach or circumvention of the
 security by others, and Landlord makes no representations or warranties
 concerning the installation, performance and monitoring of the security or that
 it will detector avert occurrences which any such security is intended or
 expected to detector avert. Landlord shall maintain the security which it
 elects to install in good repair.
                   Electricity for the Building, including the entirety of the
 Premises shall be separately metered and paid by Tenant upon billing by the
 service provider or as billed by Landlord (if for any reason direct billing to
 Tenant cannot be established or until such billing is arranged, based on the
 actual costs incurred to the provider, without markup or profit to Landlord)
 and electricity shall not be included in amounts required to be paid by Tenant
 as Operating Expenses under Exhibit C. In addition, Tenant shall be responsible
 for and shall pay promptly, directly to the appropriate supplier, all charges
 for telephone, interior landscape maintenance, and other materials and services
 furnished directly to Tenant or the Premises, or used by Tenant in or about the
 Premises during the Term, together with any taxes thereon. Prior to
 installation or use of Special Equipment or operation of the Premises for
 extended hours on an ongoing basis, Tenant shall notify Landlord of such
 intended installation or use. Tenant shall reimburse Landlord for all
 additional costs, if any, incurred by Landlord as a result of Tenant's
 installation or use of Special Equipment, other than electrical costs (which
 shall be included in the metered electricity), as reasonably determined by
 Landlord's engineer, including all costs of supplementing the Building HVAC
 System and/or extending or supplementing any electrical service, as Landlord
 determines is necessary, as a result of such Special Equipment. "Special
 Equipment" means (a) any equipment requiring modification or supplementation of
 the Building HVAC or electrical systems, (b) any equipment requiring a voltage
 other than 120 volts, single phase, or (c) equipment that requires the use ' of
 self-contained 1HVAC units. If Tenant desires use of Building services after
 Ordinary Business Hours, Tenant shall give Landlord such prior notice as is
 reasonably required to arrange for such after-hours services. Charges for
 Building HVAC use after Ordinary Business Hours, to be used in determining the
 charges referred to above, are set forth on the attached Exhibit H.
          7.3 If Tenant requires janitorial services other than those included
 as standard Services or if Tenant desires to separately contract for janitorial
 services for the Premises for security reasons, Tenant may separately contract
 for such janitorial services at Tenant's sole cost and expense, upon not less
 than 60 days prior notice to Landlord (provided, that, if Tenant elects to
 separately contract for janitorial services in accordance with the foregoing,
 such janitorial services shall include at a minimum those services described on
 Exhibit F and the Operating Expenses and the Base Rent shall be subject to
 adjustment in accordance with Section 6.1 of Exhibit Q.
          7.4 Landlord may discontinue, reduce, or curtail Services (either
 temporarily or permanently) when necessary due to accident, repairs,
 alterations, strikes, lockouts, Applicable Laws, or any other happening beyond
 Landlord's reasonable control. Landlord is not liable for damages to Tenant or
 any other party as a result of any interruption, reduction, or discontinuance
 of Services (either temporary or permanent) nor shall the occurrence of any
 such event be construed as an eviction of Tenant, cause or permit an abatement,
 reduction or setoff of Rent, or operate to release Tenant from Tenant's
 obligations; provided, however, that notwithstanding the foregoing, if the
 Premises should become unsuitable for Tenant's use as a consequence of a
 cessation of Services which is due to events within Landlord's reasonable

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 control (other than an interruption resulting from a fire or other casualty,
 which shall be governed by the provisions of Section 18) (excluding, however,
 acts or omissions of Tenant or Tenant's Agents, as defined below) and persists
 for more than five (5) consecutive business days (an "Interfering Event"), then
 Tenant shall be entitled to an equitable abatement of Rent to the extent of the
 interference with Tenant's use of the Premises occasioned thereby from the date
 of the Interfering Event until the date the Services are restored to the
 Premises. If Tenant continues to use any part of the Premises to conduct its
 business, the Rent will only abate for the untenantable part not used..

           7.5 Tenant shall promptly notify Landlord of any accidents or defects
 in the Building of which Tenant becomes aware, including defects in pipes,
 electric wiring, and HVAC equipment, and of any condition which may cause
 injury or damage to the Building or any person or property therein.

      8. OUIET ENJOYMENT. So long as an Event of Default has not occurred,
 Tenant is entitled to the quiet enjoyment and peaceful possession of the
 Premises subject to the provisions of this Lease. Landlord shall under no
 circumstances be held responsible for restriction or disruption of access to
 the Building from public streets caused by construction work or other actions
 taken by or on behalf of governmental authorities, or for actions taken by
 other tenants (their employees, agents, visitors, contractors or invitees), or
 any other cause not entirely within Landlord's direct control, and same shall
 not constitute a constructive eviction of Tenant nor give rise to any right or
 remedy of Tenant against Landlord of any nature or kind. This covenant of quiet
 enjoyment is in lieu of any covenant of quiet enjoyment provided or implied by
 law, and Tenant expressly waives any such other covenant of quiet enjoyment to
 the ' extent broader than the covenant contained in this Section. Tenant shall
 have access to the Building and Premises 365 days a year, seven days a week, 24
 hours a day, subject to Landlord's obligation and right to make repairs and
 alterations as provided in this Lease.

     9. DEPOSIT. Tenant shall provide to Landlord, at the time of execution
hereof by Tenant, a clean, unconditional,

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       10. CHARACTER OF OCCUPANCY. Tenant shall occupy the Premises for the
  Permitted Use and for no other purpose, and use it in a careful, safe, and
  proper manner and pay on demand for any damage to the Premises caused by
  misuse or abuse by Tenant, Tenant's agents or employees, or any other person
  entering upon the Premises under express or implied invitation of Tenant
  (collectively, "Tenant's Agents"). The term "Permitted Use" shall mean:
  general office use for administrative, clerical, and professional office
  purposes, including customer support (the "Primary Use") and for activities
  ancillary thereto, such as (i) computer room, (ii) employee cafeteria and
  (iii) small equipment storage and testing (ancillary uses including the uses
  specified under clauses (i)-(iii), are referred to collectively as the
  "Ancillary Uses"), provided that Ancillary Uses shall not be the primary use
  of the Leased Premises; in addition, Tenant shall have the right to use the
  Leased Premises for such other uses as are permitted by Applicable Laws (as
  hereinafter defined) that are expressly approved by Landlord, which approval
  shall not be unreasonably withheld if such uses are consistent with first
  class suburban general office building uses and so long as in keeping with
  Building's first-class quality and allowed under PDC zoning applicable to the
  Building ("Specially Approved Uses"). Tenant shall be responsible for
  obtaining any approvals or permits required for the Ancillary Uses or
  Specially Approved Uses under Applicable Laws and the Declaration. Tenant, at
  Tenant's expense, shall comply with all applicable federal, state, city,
  quasi-governmental and utility provider laws, codes, rules, and regulations
  now or hereafter in effect ("Applicable Laws") which impose any duty upon
  Landlord or Tenant with respect to the occupation or alteration of the
  Premises. Tenant shall not commit or permit waste or any nuisance on or in the
  Premises. Tenant agrees not to store, keep, use, sell, dispose of or offer for
  sale in, upon or from the Premises any article or substance prohibited by any
  insurance policy covering the Building Complex nor shall Tenant keep, store,
  produce or dispose of on, in or from the Premises or the Building Complex any
  substance which may be deemed an infectious waste or hazardous substance under
  any Applicable Laws, except customary office and cleaning supplies.

       11. MAINTENANCE, ALTERATIONS AND REENTRY BY LANDLORD.
           -------------------------------------------------

            11.1 Landlord will (i) make repairs and replacements to HVAC,
 mechanical, life safety and electrical systems in the Premises (to the extent
 such systems are Building standard) deemed necessary by Landlord for normal
 operations of the Building Complex; and (ii) provide upkeep, maintenance,
 replacements, and repairs to all Common Areas of the Building Complex,
 including without limitation the Parking Facilities, and all structural
 elements of the Building, including without I imitation the roof, exterior
 walls (including windows and glass), interior bearing walls, foundations,
 footings, and al I exterior surfaces of the Building. Landlord shall perform
 its obligations under this Section 11. 1 in a manner consistent with other
 first class office buildings in the northern Virginia area and in accordance
 with Applicable Laws. Except as provided in this Section or otherwise expressly
 required in this Lease, Landlord is not required to make improvements or
 repairs to the Premises during the Term.

            11.2 Landlord or Landlord's agents may at any time enter the
 Premises, without notice in case of emergency and for performance of janitorial
 services and in all other instances after reasonable prior oral or written
 notice to Tenant and subject to compliance with Tenant's reasonable security
 measures (which may include an escort) for examination and inspection, or to
 perform, if Landlord elects, any obligations of Tenant which Tenant fails to
 perform or such cleaning, maintenance, janitorial services, repairs,
 replacements, additions, or alterations as Landlord deems necessary for the
 safety,

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 improvement, or preservation of the Premises or other portions of the Building
 Complex or as required by Applicable Laws. Landlord or Landlord's agents may
 also show the Premises to prospective purchasers and Mortgagees and, during the
 last 12 months of the Term, to prospective tenants, upon not less than 48 hours
 prior notice. Any such reentry does not constitute an eviction or entitle
 Tenant to abatement of Rent. Landlord may make such alterations or changes in
 other portions of the Building Complex as Landlord desires so long as such
 alterations and changes do not unreasonably interfere with Tenant's occupancy
 of the Premises. Landlord may use the Common Areas and one or more street
 entrances to the Building Complex as may be necessary in Landlord's judgment to
 complete such work.

       12. ALTERATIONS AND REPAIRS BY TENANT.
           ----------------------------------

            12.1 Tenant shall not make any alterations to the Premises during
 the Term, including installation of equipment or machinery which requires
 modifications to existing electrical outlets or increases Tenant's usage of
 electricity beyond Tenant's Standard Electrical Usage (collectively
 "Alterations") without in each instance first obtaining the written consent of
 Landlord, which consent shall not be unreasonably withheld, conditioned or
 delayed. Landlord's consent or approval of the plans, specifications and
 working drawings for any Alterations shall not constitute any warranty or
 representation by Landlord (and shall not impose any liability on Landlord) as
 to their completeness, design sufficiency, or compliance with Applicable Laws;
 provided, however, Tenant may, without Landlord's consent, perform interior
 non-structural Alterations not involving modifications to the Base Building
 plumbing, electrical, mechanical or life safety systems provided the cost of
 any particular Alterations (taking into account together all Alterations being
 made as part of a common or phased plan) does not exceed Ten Thousand Dollars
 ($10,000). Tenant shall at its cost: pay all engineering and design costs
 incurred by Landlord as to all Alterations, obtain all governmental permits and
 approvals required, and cause all Alterations to be completed in compliance
 with Applicable Laws and requirements of Landlord's insurance. All such work
 relating to Alterations shall be performed in a good and workmanlike manner,
 using new materials and equipment at least equal in quality to the work
 performed under the Work Letter. All Alterations, repair and maintenance work
 performed by Tenant shall be done at Tenant's expense by Landlord's employees
 or, with Landlord's prior consent and subject to any conditions imposed by
 Landlord, by other persons requested by Tenant; however, if such work is not
 performed by Landlord's employees, Tenant shall pay Landlord a supervisory fee
 (not to exceed 5% of the cost of the respective Alteration) upon receipt of an
 invoice. If Landlord authorizes such persons to perform work, Tenant shall
 deliver to Landlord prior to commencement certificates issued by insurance
 companies qualified to do business in the state in which the Premises are
 located, evidencing that worker's compensation, public liability insurance, and
 property damage insurance (in amounts, with companies and on forms satisfactory
 to Landlord) are in force and maintained by all contractors and subcontractors
 engaged to perform such work. All liability policies shall name Landlord,
 Building, Manager, and Mortgagee as additional insureds. Each certificate shall
 provide that the insurance may not be canceled or modified without 10 days'
 prior written notice to Landlord and Mortgagee. Landlord also has the right to
 post notices in the Premises in locations designated by Landlord stating that
 Landlord is not responsible for payment for such work and containing such other
 information as Landlord deems necessary. All such work shall be performed in a
 manner which does not unreasonably interfere with Landlord or other tenants of
 the Building, or impose additional expense upon Landlord in the operation of
 the Building Complex.

            12.2 Tenant shall keep the Premises in as good order, condition, and
  repair and in an orderly state, as on the Commencement Date, loss by fire or
  other casualty or ordinary wear excepted.

            12.3 All Alterations, including permanent drywall partitions,
 paneling, carpeting, drapes or other window coverings, and light fixtures (but
 not including movable office furniture not attached to the Building), are
 deemed a part of the real estate and the property of Landlord and remain upon
 and be surrendered with the Premises at the end of the Term, whether by lapse
 of time or otherwise, unless Landlord notifies Tenant no later than 15 days
 prior to the end of the Term that it elects to have Tenant remove all or part
 of such Alterations, and in such event, Tenant shall at Tenant's expense
 promptly remove the Alterations specified and restore the Premises to its prior
 condition, reasonable wear and tear excepted. If expressly requested by Tenant
 at the time consent is requested for any Alterations or prior to construction
 of such Alterations, Landlord shall promptly inform Tenant whether Landlord
 will require the removal of particular Alterations pursuant to this Section
 12.3.

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       13. CONSTRUCTION LIENS. Other than provided in the Work Letter, Tenant
 shall pay for all work done on the Premises by Tenant or at its request (other
 than the Initial Tenant Finish) of a character which may result in liens on
 Landlord's or Tenant's interest and Tenant will keep the Premises free of all
 construction liens, and other liens on account of such work. Tenant
 indemnifies, defends, and saves Landlord and all Mortgagees harmless from all
 liability, loss, damage, or expenses, including attorneys' fees, on account of
 any claims of laborers, materialmen or others for work performed or for
 materials or supplies furnished to Tenant or persons claiming under Tenant. If
 any lien is recorded against the Premises or Building or any suit affecting
 title thereto is commenced as a result of such work, or supplying of materials,
 Tenant shall cause such lien to be removed of record within 5 days after notice
 from Landlord. If Tenant desires to contest any claim, Tenant must either
 arrange for release of such lien and substitution of a bond or other collateral
 (in accordance with Applicable Laws) or furnish Landlord adequate security of
 at least 150% of the amount of the claim, plus estimated costs and interest
 and, if a final judgment establishing the validity of any lien is entered,
 Tenant shall immediately pay and satisfy the same. If Tenant fails to proceed
 as aforesaid, Landlord may pay such amount and any costs, and the amount paid,
 together with reasonable attorneys' fees incurred, shall be immediately due
 Landlord upon notice.

       14. SUBLETTING AND ASSIGNMENT.
           --------------------------

            14.1 Tenant shall not sublet any part of the Premises nor assign or
 otherwise transfer this Lease or any interest herein. (sometimes referred to as
 "Transfer," and the subtenant or assignee may be referred to as "Transferee")
 without the consent of Landlord first being obtained, which consent will not be
 unreasonably withheld, conditioned or delayed provided that: (1) Tenant
 complies with the provisions of Section 14.4; (2) Landlord declines to exercise
 its rights under Section 14.3; (3) the Transferee is engaged in a business and
 the portion of the Premises will be used for the Permitted Use in a manner
 which is in keeping with the then standards of the Building and does not
 conflict with any exclusive use rights granted to any other tenant of the
 Building Complex; (4) the Transferee has reasonable financial worth in light of
 the responsibilities involved; (5) Tenant is not in default at the time it
 makes its request; (6) the Transferee is not a governmental or quasi
 -governmental agency; (7) the Transferee is not a tenant or currently
 negotiating a lease with Landlord in any Building of the Building Complex; and
 (8) the rent to be paid by the Transferee is not less than 85% of the rental
 rate then being offered by Landlord for similar space in the Building Complex.
 Transfer includes a sale by Tenant of substantially all of its assets or stock
 if Tenant is a publicly traded corporation, a merger of Tenant with another
 corporation, the transfer of 49% or more of the stock in a corporate tenant
 whose stock is not publicly traded, or transfer of 49 % or more of the
 beneficial ownership interests in a partnership or limited liability company
 tenant. If any Alterations to the Premises or the Common Areas are required by
 Applicable Laws in connection with such Transfer or the particular business of
 such Transferee, such Alterations shall be subject to the prior approval of
 Landlord (which approval shall not be unreasonably withheld) and Tenant shall
 bear the cost of such Alterations.

            14.2 Following any Transfer in accordance with this Section 14,
  Landlord may, after an Event of Default by Tenant, collect rent from the
  Transferee or occupant and apply the net amount collected to the Rent, but no
  Transfer or collection will be deemed an acceptance of the Transferee or
  occupant as Tenant or release Tenant from its obligations.
  Consent to a Transfer shall not relieve Tenant from obtaining Landlord's
  consent to any other Transfer. Notwithstanding Landlord's consent to a
  Transfer, Tenant shall continue to be primarily liable for its obligations. If
  Tenant collects any rent or other amounts from a Transferee in excess of the
  Rent for any monthly period, Tenant shall pay Landlord 50% of the excess
  monthly, as and when received.

            14.3 Notwithstanding the above (and except for a Transfer permitted
  under Section 14.7), if Tenant requests Landlord's consent to sublet 49 % or
  more of the Premises, Landlord may refuse to grant such consent in its sole
  discretion and terminate this Lease as to the portion of the Premises with
  respect to which such consent was requested; provided, however, if Landlord
  does not consent and elects to terminate the Lease as to such portion, Tenant
  may within 15 days after notice from Landlord to this effect withdraw Tenant's
  request for consent. If such termination occurs, it shall be effective on the
  date designated in a notice from Landlord and shall not be more than 30 days
  following such notice.

                                        8
<PAGE>

            14.4 For Transfers to be effective following the initial 12 months
 following the Commencement Date, Tenant must notify Landlord at least 60 days
 prior to the desired date of the Transfer ("Tenant's Notice"), excluding a
 Transfer permitted under Section 14.7. Tenant's Notice shall describe the
 portion of the Premises to be transferred and the terms and conditions.
 Landlord has, without obligation, 30 days following receipt of Tenant's Notice
 to propose a subtenant for such space (which subtenant shall be subject to the
 reasonable approval of Tenant) or to exercise its rights pursuant to Section
 14.3 if Tenant's Notice discloses that 49% or more of the Premises is involved.
 If the space covered by Tenant's Notice is subleased to a sublessee proposed by
 Landlord, rent and other sums due from the subtenant will be paid to Tenant
 directly and Landlord has no responsibility for the performance by such
 subtenant of its obligations under its sublease with Tenant. If Landlord is
 unwilling or unable to locate a subtenant (and, if applicable, declines to
 exercise its rights under Section 14.3), Landlord will notify Tenant not later
 than 30 days after receipt of Tenant's Notice and Tenant shall be free to
 sublet the specified portion of the Premises to any third party on terms
 substantially identical to those described in Tenant's Notice, subject to
 Landlord's consent as set forth above. If Tenant does not sublet such portion
 of the Premises within 180 days following Landlord's notice to Tenant, Tenant
 must reoffer the Premises to Landlord in accordance with the provisions hereof
 prior to subleasing to a third party.

            14.5 All documents utilized by Tenant to evidence a Transfer are
 subject to approval by Landlord. Tenant shall pay Landlord's reasonable
 expenses, including reasonable attorneys' fees, of determining whether to
 consent and in reviewing and approving the documents. Tenant shall provide
 Landlord with such information as Landlord reasonably requests regarding a
 proposed Transferee, including financial information.

            14.6 If a trustee or debtor in possession in bankruptcy is entitled
 to assume control over Tenant's rights under this Lease and assigns such rights
 to any third party notwithstanding the provisions hereof, the rent to be paid
 by such party shall be increased to the current Base Rent (if greater than that
 being paid for the Premises) which Landlord charges for comparable space in the
 Building as of the date of such third party's occupancy. If Landlord is
 entitled under the Bankruptcy Code to "Adequate Assurance" of future
 performance of this Lease, the parties agree that such term includes the
 following:

                    (1) Any assignee must demonstrate to Landlord's reasonable
 satisfaction a net worth (as defined in accordance with generally accepted
 accounting principles consistently applied) at least as large as the net worth
 of Tenant on the Commencement Date increased by 7%, compounded annually, for
 each year thereafter through the date of the proposed assignment. Tenant's
 financial condition was a material inducement to Landlord in executing this
 Lease.

                    (2) The assignee must assume and agree to be bound by the
provisions of this Lease.

            14.7 Notwithstanding anything to the contrary contained hereinabove
 but subject to Section 14.2 and provided that the conditions of clauses (3) and
 (5) of Section 14.1 are met, Tenant may, without obtaining Landlord's prior
 written consent, assign or sublease all or any portion of the Premises to the
 following parties on the following conditions: (i) any subsidiary or affiliate
 in which Tenant has, directly or indirectly, an ownership interest of more than
 50%; (ii) any direct or ultimate parent of Tenant; (iii) any subsidiary or
 affiliate in which Tenant's parent owns, directly or indirectly, by means of an
 ownership interest of more than 50%; or (iv) any corporation into which Tenant
 may be merged or consolidated or which purchases all or substantially all of
 the assets or stock of Tenant provided that the resulting corporation has a net
 worth at least equal to Tenant's net worth as of the date hereof. A sale or
 transfer of stock in Tenant pursuant to a public offering, including publicly
 traded stock of Tenant, shall be permitted without obtaining Landlord's prior
 written consent. As soon as practicable prior to the effective date of a
 transaction permitted under this Section 14.7, Tenant will provide Landlord
 with documentation evidencing such transaction and such other evidence as
 Landlord may reasonably require to establish that such transaction falls within
 the terms and provisions of this Section.

     15. DAMAGE TO PROPERTY. Tenant agrees Landlord is not liable for any injury
or damage, either proximate or remote, occurring through or caused by fire,
water, steam, or any repairs, alterations, injury, accident, or any other cause

                                        9
<PAGE>

 to the Premises, to any furniture, fixtures, Tenant improvements, or other
 personal property of Tenant kept or stored in the Premises, or in other parts
 of the Building Complex, whether by reason of the negligence or default of
 Landlord, other occupants, any other person, or otherwise; and the keeping or
 storing of all property of Tenant in the Premises and Building Complex is at
 the sole risk of Tenant. Landlord agrees that Tenant is not liable for injury
 or damage to property of Landlord in the Building, whether by reason of the
 negligence or default of Tenant.

       16. INDEMNITY TO
           ------------
       LANDLORD.

            16.1 Tenant agrees to indemnify, defend, and hold Landlord and
 Building Manager harmless from all liability, costs, or expenses, including
 attorneys' fees, on account of damage to the person or property of any third
 party, including any other tenant in the Building Complex, to the extent caused
 by the negligence or breach of this Lease by the Tenant or Tenant's Agents,
 subject to the provisions of Section 18.6.

            16.2 Tenant shall maintain throughout the Term a commercial general
 liability policy, including protection against death, personal injury and
 property damage, issued by an insurance company qualified to do business in the
 state in which the Premises are located, with a single limit of not less than
 $1,000,000.00. Such policy shall name Landlord, Building Manager, and Mortgagee
 as additional insureds, be primary to any other similar insurance of such
 additional insureds, and provide that it may not be canceled or modified
 without at least 20 days' prior notice to Landlord and Mortgagee. The minimum
 limits of such insurance do not limit the liability of Tenant hereunder. Prior
 to occupancy of the Premises, and prior to expiration of the then-current
 policy, Tenant shall deliver certificates evidencing that insurance required
 under this Lease is in effect.

            16.3 Landlord agrees to indemnify, defend, and hold Tenant harmless
  from all liability, costs, or expenses, including attorneys' fees, on account
  of damage to the person or property of any third party (excluding Tenant's
  Agents) including any other tenant in the Building Complex, to the extent
  caused by the negligence or breach of this Lease by Landlord, subject to the
  provisions of Section 18.6.

       17. SURRENDER AND NOTICE. Upon the expiration or other termination of
  this Lease, Tenant shall immediately quit and surrender to Landlord the
  Premises broom clean, in good order and condition, ordinary wear and tear and
  loss by fire or other casualty excepted, and Tenant shall remove all of its
  movable furniture and other effects, all telephone cable and data cable in the
  Building core utility chases (as distinguished from wiring in ceilings and
  walls within the Premises) installed for Tenant, and such Alterations, as
  Landlord requires in accordance with Section 12.3. If Tenant fails to timely
  vacate the Premises as required, Tenant is responsible to Landlord for all
  resulting costs and damages of Landlord, including any amounts paid to third
  parties who are delayed in occupying the Premises.

       18. INSURANCE, CASUALTY, AND RESTORATION OF PREMISES.
           -------------------------------------------------

            18.1 Landlord shall maintain property insurance for the Building
 Complex, the shell and core of the Building and the Premises in such amounts,
 from such companies, and on such terms and conditions, including insurance for
 loss of Rent as Landlord deems appropriate, from time to time.

            18.2 Tenant shall maintain throughout the Term insurance coverage at
  least as broad as ISO Special Form Coverage against risks of direct physical
  loss or damage (commonly known as "all risk") for the full replacement cost of
  Tenant's property and betterments in the Premises, including tenant finish in
  excess of the Initial Tenant Finish.

            18.3 If the Building is damaged by fire or other casualty which
  renders the Premises wholly untenantable and the damage is so extensive that
  an architect selected by Landlord certifies in writing to Landlord and Tenant
  within 60 days of said casualty that the Premises cannot, with the exercise of
  reasonable diligence, be made fit for occupancy within 180 working days from
  the happening thereof, then, at the option of Landlord or Tenant exercised in
  writing to the other within 30 days of such determination, this Lease shall
  terminate as of the occurrence of such damage. In the event of termination,

                                       10
<PAGE>

 Tenant shall pay Rent duly apportioned up to the time of such casualty and
 forthwith surrender the Premises and all interest. If Tenant fails to do so,
 Landlord may reenter and take possession of the Premises and remove Tenant. If,
 however, the damage is such that the architect certifies that the Premises can
 be made tenantable within such 180-day period or neither Landlord or Tenant
 elects to terminate the Lease despite the extent of damage, then the provisions
 below apply.

            18.4 If the Premises are damaged by fire or other casualty that does
 not render it wholly untenantable or require a repair period in excess of 180
 days, Landlord shall with reasonable promptness except as hereafter provided
 repair the Premises to the extent of the Initial Tenant Finish.

            18.5 If the Building is damaged (though the Premises may not be
 affected, or if affected, can be repaired within 180 days) and within 60 days
 after the damage Landlord decides not to reconstruct or rebuild the Building,
 then, notwithstanding anything contained herein, upon notice to that effect
 from Landlord within said 60 days, Tenant shall pay the Rent apportioned to the
 later of the date of such casualty or the date that Tenant ceases to use the
 Premises, this Lease shall terminate from the date of such notice, and both
 parties discharged from further obligations except as otherwise expressly
 provided.

            18.6 Landlord and Tenant waive all rights of recovery against the
 other and its respective officers, partners, members, agents, representatives,
 and employees for loss or damage to its real and personal property kept in the
 Building Complex, including any loss or damage which is capable of being
 insured against under ISO Special Form Coverage, or for loss of business
 revenue or extra expense arising out of or related to the use and occupancy of
 the Premises. Tenant also waives all such rights of recovery against Building
 Manager. Each party shall, upon obtaining the property damage insurance
 required by this Lease, notify the insurance carrier that the foregoing waiver
 is contained in this Lease and use reasonable efforts to obtain an appropriate
 waiver of subrogation provision in the policies.

            18.7 Rent shall abate from the later of the date of such casualty or
 the date that Tenant ceases to use the Premises and continuing until
 substantial completion of repair and restoration to the extent of the Initial
 Tenant Finish permitting occupancy by Tenant, in the same proportion that the
 part of the Premises rendered untenantable bears to the whole; provided,
 however, if the casualty is the fault of Tenant or Tenant's Agents, then the
 Rent will abate during any such period of repair and restoration but only to
 the extent of any recovery by Landlord under its rental insurance related to
 the Premises.

       19. CONDEMNATION. If the Premises or substantially all of it or any
 portion of the Building Complex which renders the Premises untenantable is
 taken by right of eminent domain, or by condemnation (which includes a
 conveyance in lieu of a taking), this Lease, at the option of either Landlord
 or Tenant exercised by notice to the other within 30 days after the taking,
 shall terminate and Rent shall be apportioned as of the date of the taking.
 Tenant shall forthwith surrender the Premises and all interest in this Lease,
 and, if Tenant fails to do so, Landlord may reenter and take possession of the
 Premises. If less than all the Premises is taken, Landlord shall promptly
 repair the Premises as nearly as possible to its condition immediately prior to
 the taking, unless Landlord elects not to rebuild under Section 18.5. Landlord
 shall receive the entire award or consideration for the taking.

       20. DEFAULT BY TENANT.
           ------------------

            20.1 Each of the following events is an "Event
            of Default":

                    (1) Any failure by Tenant to pay Rent on the due date unless
  such failure is cured within 5 business days after notice by Landlord;

     (2) Tenant vacates (other than temporary vacation during which period
Tenant is engaged in. trying to relet the Premises) or abandons the Premises;

                                       11
<PAGE>

          (3) This Lease or Tenant's interest is transferred whether voluntarily
     or by operation of law except as permitted in Section 14;

          (4) This Lease or any part of the Premises is taken by process of law
     and is not released within 15 days after a levy;

                    (5) Commencement by Tenant of a proceeding under any
 provision of federal or state law relating to insolvency, bankruptcy, or
 reorganization ("Bankruptcy Proceeding");

          (6) Commencement of a Bankruptcy Proceeding against Tenant, unless
     dismissed within 90 days after commencement;

                    (7) The insolvency of Tenant or execution by Tenant of an
 assignment for the benefit of creditors; the convening by Tenant of a meeting
 of its creditors or any significant class thereof for purposes of effecting a
 moratorium upon or extension or composition of its debts; or the failure of
 Tenant generally to pay its debts as they mature, or the occurrence of any of
 the foregoing with respect to any Guarantor, if any, of Tenant's obligations;

                    (8) The admission in writing by Tenant (or any general
 partner of Tenant if Tenant is a partnership), that it is unable to pay its
 debts as they mature or it is generally not paying its debts as they mature;

                    (9) Tenant fails to take possession of the Premises by the
 90th day following the Commencement Date (which deadline may be extended by
 delays beyond the reasonable control of Tenant, provided that Tenant is
 proceeding with due diligence to complete the Finish Work and move into the
 Premises);

                    (10) Tenant fails to perform any of its other obligations
 and non-performance continues for 30 days after notice by Landlord or, if such
 performance cannot be reasonably had within such 30 day period, Tenant does not
 in good faith commence performance within such 30 day period and diligently
 proceed to completion; provided, however, Tenant's right to cure shall not
 exceed the period provided by Applicable Law;

                    (11) Any event which is expressly defined as or deemed an
Event of Default under this Lease.

          20.2 Remedies of Landlord. If an Event of Default occurs, Landlord may
     then or at any time thereafter, either:

                    (1) (a) Without further notice except as required by
 Applicable Laws, reenter and repossess the Premises or any part and expel
 Tenant and those claiming through or under Tenant and remove the effects of
 both without being deemed guilty of any manner of trespass and without
 prejudice to any remedies for arrears of Rent or preceding breach of this
 Lease. Should Landlord reenter or take possession pursuant to legal proceedings
 or any notice provided for by Applicable Law, Landlord may, from time to time,
 without terminating this Lease, relet the Premises or any part, either alone or
 in conjunction with other portions of the Building Complex, in Landlord's or
 Tenant's name but for the account of Tenant, for such periods (which may be
 greater or less than the period which would otherwise have constituted the
 balance of the Term) and on such conditions and upon such other terms (which
 may include concessions of free rent and alteration and repair of the Premises)
 as Landlord, in its reasonable discretion, determines and Landlord may collect
 the rents therefor, Landlord is not in any way responsible or liable for
 failure to relet the Premises, or any part thereof, or for any failure to
 collect any rent due upon such reletting, but Landlord shall use commercially
 reasonable efforts to mitigate its damages to the extent required under
 applicable law. If there is other unleased space in the 4-building Worldgate
 complex, Landlord may lease such other space without prejudice to its remedies
 against Tenant. No such reentry or repossession or notice from Landlord shall
 be construed as an election by Landlord to terminate this Lease unless specific
 notice of such intention is given Tenant. Landlord reserves the right following
 any reentry and/or reletting to exercise its right to terminate this Lease by
 giving Tenant notice, in which event this Lease will terminate as specified in
 the notice.

                                       12
<PAGE>

          (b) If Landlord takes possession of the Premises without terminating
     this Lease, Tenant shall pay Landlord (i) the Rent which would be payable
     if repossession had not occurred, less (ii) the net proceeds, if any, of
     any reletting of the Premises after deducting all of Landlord's expenses
     reasonably incurred in connection with such reletting, including all
     repossession costs, brokerage commissions, reasonable attorneys' fees,
     expenses of employees, alteration, and repair costs (collectively
     "Reletting Expenses"). If, in connection with any reletting, the new lease
     term extends beyond the Term or the premises covered thereby include other
     premises not part of the Premises, a fair apportionment of the rent
     received from such reletting and the Reletting Expenses, will be made in
     determining the net proceeds received from the reletting. In determining
     such net proceeds, rent concessions will also be apportioned over the term
     of the new lease. Tenant shall pay such amounts to Landlord monthly on the
     days on which the Rent would have been payable if possession had not been
     retaken, and Landlord is entitled to receive the same from Tenant on each
     such day; or

                    (2) Give Tenant notice of termination of this Lease on the
 date specified and, on such date, Tenant's right to possession of the Premises
 shall cease and the Lease will terminate except as to Tenant's liability as
 hereafter provided as if the expiration of the term fixed in such notice were
 the end of the Term. If this Lease terminates pursuant to this Section, Tenant
 remains liable to Landlord for damages in an amount equal to the Rent which
 would have been owing by Tenant for the balance of the Term had this Lease not
 terminated, less the net proceeds, if any, of reletting of the Premises by
 Landlord subsequent to termination after deducting Reletting Expenses. Landlord
 may collect such damages from Tenant monthly on the days on which the Rent
 would have been payable if this Lease had not terminated and Landlord shall be
 entitled to receive the same from Tenant on each such day. Alternatively, if
 this Lease is terminated, Landlord at its option may recover forthwith against
 Tenant as damages for loss of the bargain and not as a penalty an amount equal
 to the worth at the time of termination of the excess, if any, of the Rent
 reserved in this Lease for the balance of the Term over the then Reasonable
 Rental Value of the Premises for the same period plus all Reletting Expenses.
 "Reasonable Rental Value" is the amount of rent Landlord can obtain for the
 remaining balance of the Term.

            20.3 Cumulative Remedies. Suits to recover Rent and damages may be
 brought by Landlord, from time to time, and nothing herein requires Landlord to
 await the date the Term would expire had there been no Event of Default or
 termination, as the case may be. Each right and remedy provided for in this
 Lease is cumulative and non-exclusive and in addition to every other right or
 remedy now or hereafter existing at law or equity, including suits for
 injunctive relief and specific performance, but in no event is Tenant
 responsible for consequential damages or lost profit incurred by Landlord as a
 result of any default by Tenant except as arise in connection with Tenant's
 failure to surrender the Premises upon the expiration or earlier termination of
 the Lease. The exercise or beginning of the exercise by Landlord of one or more
 rights or remedies shall not preclude the simultaneous or later exercise by
 Landlord of other rights or remedies. All costs incurred by Landlord to collect
 any Rent and damages or to enforce this Lease are also recoverable from Tenant.
 If any suit is brought because of an alleged breach of this Lease, the
 prevailing party is also entitled to recover from the other party all
 reasonable attorneys' fees and costs incurred in connection therewith.

            20.4 No-Waiver. No failure by Landlord to insist upon strict
 performance of any provision or to exercise any right or remedy upon a breach
 thereof, and no acceptance of full or partial Rent during the continuance of
 any breach constitutes a waiver of any such breach or such provision, except by
 written instrument executed by Landlord. No waiver shall affect or alter this
 Lease but each provision hereof continues in effect with respect to any other
 then existing or subsequent breach thereof.

            20.5 Bankruptcy. Nothing contained in this Lease limits Landlord's
 right to obtain as liquidated damages in any bankruptcy or similar proceeding
 the maximum amount allowed by law at the time such damages are to be proven,
 whether such amount is greater, equal to, or less than the amounts recoverable,
 either as damages or Rent, referred to in any of the preceding provisions of
 this Section. Notwithstanding anything in this Section to the contrary, any
 proceeding described in Section 20.1(5),(6),(7) and (8) is an Event of Default
 only when such proceeding is brought by or against the then holder of the
 leasehold estate under this Lease.

                                       13
<PAGE>

          20.6 Late Payment Charge. Any Rent not paid within 5 days after the
     due date shall thereafter bear interest at 5 percentage points above the
     Prime Rate or the highest rate permitted by law, whichever is lower, until
     paid. Any amounts paid by Landlord to cure a default of Tenant which
     Landlord has the right but not the obligation to do, shall, if not repaid
     by Tenant within 5 days of demand by Landlord, thereafter bear interest at
     5 percentage points above the Prime Rate until paid. "Prime Rate" means
     that rate announced by Wells Fargo Bank, N.A. as its prime rate on the date
     closest to the date interest commences. 20.7 Waiver of Jury Trial. Tenant
     and Landlord waive any right to a trial by jury in suits arising out of or
     concerning the provisions of this Lease.

      2 1. DEFAULT BY LANDLORD. An event of default by Landlord shall exist if
 Landlord fails to perform any of its obligations and non-performance continues
 for 30 days after notice by Tenant or, if such performance cannot be reasonably
 had within such 30 day period, Landlord does not in good faith commence
 performance within such 30 day period and diligently proceed to completion.
 Such notice shall be ineffective unless a copy is simultaneously also delivered
 in the manner required in this Lease to any holder of a mortgage and/or deed of
 trust affecting all or any portion of the Building Complex (collectively,
 "Mortgagee"), provided that prior to such notice Tenant has been notified (by
 way of notice of Assignment of Rents and Leases, or otherwise), of the address
 of a Mortgagee. If Landlord fails to cure such default within the time
 provided, then Mortgagee shall have an additional 30 days following a second
 notice from Tenant or, if such default cannot be cured within that time, such
 additional time as may be necessary provided within such 30 days, Mortgagee
 commences and diligently pursues a cure (including commencement of foreclosure
 proceedings if necessary to effect such cure). Tenant's sole remedy will be
 equitable relief or actual damages but in no event is Landlord or any Mortgagee
 responsible for consequential damages or lost profit incurred by Tenant as a
 result of any default by Landlord. If a Mortgagee, or transferee under such
 Mortgage (hereafter defined), succeeds to Landlord's interest as a result of
 foreclosure or otherwise, such party shall not be: (i) liable for any default,
 nor subject to any setoff or defenses that Tenant may have against Landlord;
 (ii) bound by any amendment (including an agreement for early termination)
 without its consent made at any time after notice to Tenant that such Mortgage
 requires such consent; and (iii) bound by payment of Rent in advance for more
 than 30 days. Tenant agrees to pay Rent (and will receive credit under this
 Lease) as directed in any Mortgagee's notice of Landlord's default under the
 Mortgage reciting that Mortgagee is entitled to collect Rent.
 22. SUBORDINATION AND ATTORNMENT.
     -----------------------------
            22.1 This Lease at Landlord's option will be subordinate to any
 mortgage, deed of trust and related documents now or hereafter placed upon the
 Building Complex (including all-advances made thereunder), and to all
 amendments, renewals, replacements, or restatements thereof (collectively,
 "Mortgage"). Tenant agrees that no documentation other than this Lease is
 required to evidence such subordination.
            22.2 If any Mortgagee elects to have this Lease superior to the lien
 of its Mortgage and gives notice to Tenant, this Lease will be deemed prior to
 such Mortgage whether this Lease is dated prior or subsequent to the date of
 such Mortgage or the date of recording thereof.

            22.3 In confirmation of subordination or superior position, as the
 case may be, Tenant will execute such documents as may be reasonably required
 by Mortgagee and if it fails to do so within 10 business days after demand,
 Tenant hereby irrevocably appoints Landlord as Tenant's attorney-in-fact and in
 Tenant's name, place, and stead, to do so.
            22.4 Tenant hereby attorns to all successor owners of the Building,
 whether such ownership is acquired by sale, foreclosure of a Mortgage, or
 otherwise.

                                       14
<PAGE>

       23. REMOVAL OF TENANT'S PROPERTY. All movable personal property of Tenant
 not removed from the Premises upon abandonment, expiration or earlier
 termination of this Lease shall be conclusively deemed abandoned and may be
 sold, or otherwise disposed of by Landlord without notice to Tenant and without
 obligation to account; Tenant shall pay Landlord's expenses in connection with
 such disposition.

       24. HOLDING OVER: TENANCY MONTH-TO-MONTH. If, after the expiration or
 termination of this Lease, Tenant remains in possession of the Premises without
 a written agreement as to such holding over and continues to pay rent and
 Landlord accepts such rent, such possession is a tenancy from month-to-month,
 subject to all provisions hereof but at a monthly rent equivalent to 150 % of
 the monthly Rent paid by Tenant immediately prior to such expiration or
 termination. Rent shall continue to be payable in advance on the first day of
 each calendar month. Such tenancy may be terminated by either party upon 10
 days' notice prior to the end of any monthly period. Nothing contained herein
 obligates Landlord to accept rent tendered after the expiration of the Term or
 relieves Tenant of its liability under Section 17.

       25. PAYMENTS AFTER TERMINATION. No payments by Tenant after expiration or
 termination of this Lease or after any notice (other than a demand for payment
 of money) by Landlord to Tenant reinstates, continues, extends the Term, or
 affects any notice given to Tenant prior to such payments. After notice,
 commencement of a suit, or final judgment granting Landlord possession of the
 Premises, Landlord may collect any amounts due or otherwise exercise Landlord's
 remedies without waiving any notice or affecting any suit or judgment.

       26. STATEMENT OF PERFORMANCE. Tenant agrees at any time upon not less
 than 10 days' notice to execute and deliver to Landlord a written statement
 certifying that this Lease is unmodified and in full force and effect (or, if
 there have been modifications, that the same is in full force and effect as
 modified stating the modifications); that there have been no defaults by
 Landlord or Tenant and no event which with the giving of notice or passage of
 time, or both, would constitute such a default (or, if there have been
 defaults, setting forth the nature thereof); the date to which Rent has been
 paid in advance and such other information as Landlord requests. Such statement
 may be relied upon by a prospective purchaser of Landlord's interest or
 Mortgagee. Tenant's failure to timely deliver such statement is conclusive upon
 Tenant that: (i) this Lease is in full force and effect without modification
 except as may be represented by Landlord; (ii) there are no uncured defaults in
 Landlord's performance; and (iii) not more than 1 month's Rent has been paid in
 advance. Upon request, Tenant will furnish Landlord an appropriate resolution
 confirming that the party signing the statement is authorized to do so. Any
 such statement shall be substantially in the form attached hereto as Exhibit G
 with such additional provisions or changes as may be reasonably required by the
 party intending to rely on such statement.

       27. MISCELLANEOUS.
           --------------

            27.1 Transfer by Landlord. The term "Landlord" means so far as
 obligations of Landlord are concerned, only the owner of the Building at the
 time in question and, if any transfer of the title occurs, Landlord herein
 named (and in the case of any subsequent transfers, the then grantor) is
 automatically released from and after the date of such transfer of all
 liability as respects performance of any obligations of Landlord thereafter to
 be performed. Any funds in Landlord's possession at the time of transfer in
 which Tenant has an interest will be turned over to the grantee and any amount
 then due Tenant under this Lease will be paid to Tenant.

            27.2 No Merger. The termination or mutual cancellation of this Lease
  will not work a merger, and such termination or cancellation will at the
  option of Landlord either terminate all subleases or operate as an automatic
  assignment to Landlord of such subleases.

          27.3 Common Area Use. Landlord may use any of the Common Areas for the
     purposes of completing or making repairs or alterations in any portion of
     the Building Complex; subject to the provisions of Section 11.

                                       15
<PAGE>

            27.4 Independent Covenants. This Lease is to be construed as though
 the covenants between Landlord and Tenant are independent and not dependent and
 Tenant is not entitled to any setoff of the Rent against Landlord if Landlord
 fails to perform its obligations; provided, however, the foregoing does not
 impair Tenant's right to commence a separate suit against Landlord for any
 default by Landlord so long as Tenant complies with Section 21.

            27.5 Validity of Provisions. If any provision is invalid under
 present or future laws, then it is agreed that the remainder of this Lease is
 not affected and that in lieu of each provision that is invalid, there will be
 added as part of this Lease a provision as similar to such invalid provision as
 may be possible and is valid and enforceable.

            27.6 Captions. The caption of each Section is added for convenience
 only and has no effect in the construction of any provision of this Lease.

            27.7 Construction. The parties waive any rule of construction that
 ambiguities are to be resolved against the drafting party. Any words following
 the words "include," "including," "such as," "for example," or similar words or
 phrases shall be illustrative only and are not intended to be exclusive,
 whether or not language of non-limitation is used.

            27.8 Applicabili1y. Except as otherwise provided, the provisions of
  this Lease are applicable to and binding upon Landlord's and Tenant's
  respective heirs, successors and assigns. Such provisions are also considered
  to be covenants running with the land to the fullest extent permitted by law.

            27.9 Authority. Tenant and the party executing this Lease on behalf
 of Tenant represent to Landlord that such party is authorized to do so by
 requisite action of Tenant and agree, upon request, to deliver Landlord a
 resolution, similar document, or opinion of counsel to that effect.

            27.10 Severability. If there is more than one party which is the
 Tenant, the obligations imposed upon Tenant are joint and several.

            27.11 Acceptance of Keys, Rent or Surrender. No act of Landlord or
 its representatives during the Term, including any agreement to accept a
 surrender of the Premises or amend this Lease, is binding on Landlord unless
 such act is by a partner, member or officer of Landlord, as the case may be, or
 other party designated in writing by Landlord as authorized to act. The
 delivery of keys to Landlord or its representatives will not operate as a
 termination of this Lease or a surrender of the Premises. No payment by Tenant
 of a lesser amount than the entire Rent owing is other than on account of such
 Rent nor is any endorsement or statement on any check or letter accompanying
 payment an accord and satisfaction. Landlord may accept payment without
 prejudice to Landlord's right to recover the balance or pursue any other remedy
 available to Landlord.

            27.12 Building Name and Size. Landlord may as it relates to the
 Building and Building Complex: change the name, increase the size by adding
 additional real property (to the extent such additional real property is
 included in the planned 4 building complex consistent with the Final
 Development Plan Amendment ("FDPA") that received approval prior to the
 execution hereof), construct other buildings or improvements (consistent with
 the FDPA), change the location and/or character, or make alterations or
 additions; provided, however, that (i) Landlord shall not revise the Site Plan
 for Worldgate Plaza I and 11 that has already been approved by governmental
 authorities, (ii) Landlord shall not materially alter the exterior of Worldgate
 Plaza I and 11 as provided in Landlord's Drawings, and (iii) Landlord shall not
 rename the Building unless such new name is either the address of the Building
 or a substitute name approved by Tenant. If additional buildings are
 constructed or the size is increased, Landlord and Tenant shall execute an
 amendment which incorporates any necessary modifications to Tenant's Pro Rata
 Share (provided that such modifications shall not increase Tenant's Pro Rata
 Share percentage as determined in accordance with the Addendum). Tenant may not
 use the Building's name for any purpose other than as part of its business
 address without Landlord's consent, which shall not be unreasonably withheld,
 conditioned or delayed. Tenant shall have the right to use photographs of the
 Building and the Building address in its marketing and

                                       16
<PAGE>

 advertising provided that such Landlord shall have a right to require Tenant to
 discontinue such use if Landlord determines that such use is not, in Landlord's
 reasonable opinion, consistent with the first class image of the Building.

            27.13 Diminution of View. Tenant agrees that no diminution of light,
 air, or view from the Building entitles Tenant to any reduction of Rent under
 this Lease, results in any liability of Landlord, or in any way affects
 Tenant's obligations.

            27.14 Limitation of Liability. Notwithstanding anything to the
 contrary contained in this Lease, Landlord's liability is limited to Landlord's
 interest in the Building and the Security Deposit; by execution in the
 provision provided below, Landlord agrees that it shall be liable for, the
 application of the Deposit in accordance with the terms of this Lease until
 such Deposit is applied strictly in accordance with the terms of this Lease,
 returned or released to Tenant (or at Tenant's request), or the Deposit is
 delivered to a purchaser or successor-in-interest to Landlord as owner of the
 Building or Landlord's Mortgagee that assumes the obligations of Landlord with
 respect to such Deposit.

          27.15 Non-Reliance. Tenant confirms it has not relied on any
     statements, representations, or warranties by Landlord or its
     representatives except as set forth herein.

          27.16 Written Modification. No amendment or modification of this Lease
     is valid or binding unless in writing and executed by the parties.

            27.17 Lender's Requirements. Tenant will make such modifications to
 this Lease as may hereafter be required to conform to any lender's
 requirements, so long as such modifications do not increase Tenant's
 obligations or materially alter its rights.

            27.18 Effectiveness. Submission of this instrument for examination
 or signature by Tenant does not constitute a reservation of or option to lease
 and it is not effective unless and until execution and delivery by both
 Landlord and Tenant.

            27.19 Survival. This Lease, notwithstanding expiration or
  termination, continues in effect as to any provisions requiring observance or
  performance subsequent to termination or expiration.

            27.20 Time of Essence. Time is of the essence herein.
                  -----------------

            27.21 Rules and Regulations. If rules and regulations are attached
 hereto, they are a part of this Lease and Tenant agrees that Tenant and
 Tenant's Agents shall at all times abide by such rules and regulations.

            27.22 Recording. Tenant will not record this Lease. Recording of the
  Lease by or on behalf of Tenant is an Event of Default. Upon approval of a
  form of memorandum of lease by Landlord and Tenant, either party may record
  such form and shall cooperate in evidencing the expiration or earlier
  termination, if applicable, under the applicable recording statutes.

       28. AUTHORITIES FOR ACTION AND NOTICE.
           ----------------------------------

            28.1 Unless otherwise provided, Landlord may act through Landlord's
  Building Manager or other designated representatives from time to time.

            28.2 All notices or other communications required or desired to be
  given to Landlord must be in writing and shall be deemed received when
  delivered personally to any officer, partner, or member of Landlord (depending
  upon the nature of Landlord) or the manager of the Building (the "Building
  Manager") whose office is in the Building, or when deposited in the United
  States mail, postage prepaid, certified, return receipt requested, addressed
  as set forth in Section

                                       17
<PAGE>

 1.10 . All notices or communications required or desired to be given to Tenant
 shall be in writing and deemed duly served when delivered personally to any
 office, partner, or member of Tenant (depending upon the nature of Tenant),
 individually if a sole proprietorship, or when deposited in the United States
 mail, postage prepaid, certified, return receipt requested, addressed to the
 appropriate address set forth in Section 1. 13. Either party may designate in
 writing served as above provided a different address to which notice is to be
 mailed. The foregoing does not prohibit notice from being given as provided in
 the rules of civil procedure, as amended from time to time, for the state in
 which the Real Property is located.

      29. PARKING. Landlord shall control parking in the Parking Garage by
 Tenant's employees and employees of tenants in Plaza 11 by issuance of parking
 passes; Landlord will make available the number of parking spaces set forth in
 Section 1.9 without charge for parking by Tenant's employees by issuing passes
 to employees designated by Tenant for the applicable number of spaces. Landlord
 shall have the right to control or limit parking by visitors to the Building in
 a manner consistent with policies at similar first-class buildings in the
 suburban northern Virginia area; the visitor spaces for Tenant shall be in the
 surface spaces adjacent to the entry to the Building, as shown on the site plan
 attached as Exhibit J (which spaces shall be a portion of the 322 spaces
 allocated to Tenant in accordance with Section 1.9) designated by signage as
 visitor parking spaces for Tenant's visitors only (but Landlord shall have no
 obligation to police the use of such spaces); the remaining parking spaces
 shall be in the parking garage located in the lower level and the 1st through
 4th floors of the Building and of the Plaza II Building (the "Parking Garage")
 and in surface parking spaces in the Building Complex. All Tenant's parking
 spaces shall be in and out, non-assigned (except for the reserved spaces as
 provided in Section 1.9). Landlord shall designate Tenant's reserved parking
 spaces within the portion of the Parking Garage located within the footprint of
 the Building. Notwithstanding the above, Landlord's inability to make such
 spaces available at any time for reasons beyond Landlord's reasonable control
 is not a material breach by Landlord of its obligations hereunder and Tenant
 has no rights to use the parking garage except as provided in this Section. If
 Landlord is unable to make all such spaces available for reasons beyond
 Landlord's reasonable control, Landlord shall take reasonable steps to make all
 such spaces available as provided herein. All vehicles parked in the parking
 facilities and the personal property therein shall be at the sole risk of
 Tenant, Tenant's Agents and the users of such spaces and Landlord shall have no
 liability for loss or damage thereto for whatever cause.

       30. SUBSTITUTE PREMISES. [Intentionally deleted]
           ---------------------

       3 1. BROKERAGE. Tenant represents it has not employed any broker with
 respect to this Lease and has no knowledge or any broker's involvement in this
 transaction except those listed in Sections 1. 14 and 1. 15 (collectively, the
 "Brokers") which Brokers' commissions are being paid by Landlord under separate
 written agreement and Landlord shall indemnify Tenant against any expense
 incurred by Tenant as a result of any claim for commissions or fees by the
 Brokers for which Landlord is responsible under such agreement. Tenant shall
 indemnify Landlord against any expense incurred by Landlord as a result of any
 claim for commissions or fees by any other broker, finder, or agent, whether or
 not meritorious, employed by Tenant or claiming by, through, or under Tenant,
 other than the Brokers. Tenant acknowledges Landlord is not liable for any
 representations by the Brokers regarding the Premises, Building, Building
 Complex, or this Lease.

       32. COUNTERPARTS. This Lease may be executed in two or more counterparts,
  each of which shall be deemed an original, but all of which together shall
  constitute one and the same instrument. Any one or more counterpart signature
  pages may be removed from one counterpart of the Lease and annexed to another
  counterpart of the Lease to form a completely executed original instrument
  without impairing the legal effect of the signature thereon.

          33. ADDENDUM/EXHIBITS. Any Addenda and/or Exhibits referred to herein
     and attached hereto are incorporated herein by reference.

                                       18
<PAGE>

      IN WITNESS WHEREOF, the parties have executed this Lease as of the day and
 year first above written and it is effective upon delivery of a fully-executed
 copy to Tenant.

 ONEPOINT COMMUNICATIONS CORP., a        WGP ASSOCIATES, LLC, a Virginia limited
 liability
 Delaware corporation                    company
 By:  ____________________________
 Print Name: _____________________       By:
 Print Title: ______________________
                                           Authorized Signatory

                                                      "Landlord"
 ATTEST:

 Print Name: _____________________
Print Title: _______________________

                  "Tenant"
                                       19
<PAGE>

                                    ADDENDUM

       THIS ADDENDUM is to that certain lease agreement (the "Lease") by and
 between WGP ASSOCIATES, LLC, a Virginia limited liability company ("Landlord"),
 and ONEPOINT COMMUNICATIONS CORP., a Delaware corporation ("Tenant"), with
 respect to approximately 80,582 rentable square feet of space (the "Premises")
 in the Building. In the event of any conflict between the terms and provisions
 of the Lease and the terms and provisions of this Addendum, the terms and
 provisions of this Addendum shall control.

       1. Landlord and Tenant agree that, upon completion of the Final Working
 Drawings (as defined in the Work Letter) for the Premises, Landlord shall have
 Landlord's Architect remeasure the Premises to determine and certify to
 Landlord and Tenant the rentable square footage of the Premises to be
 determined by measuring the usable area in accordance with the modified
 Washington, D.C. Association of Realtors, Inc. Standard Method of Measure and
 applying a rentable/usable factor of 11. 86 % as to full floor tenancies. If
 such measurement differs from the square footage set forth herein, the Base
 Rent (based on annual per rentable square foot rates set forth in Section 1.4),
 the Allowance, if applicable, and the number of parking spaces to which Tenant
 is entitled shall be revised to reflect such calculation and such revised
 numbers.

       2. Landlord is the owner of an adjacent parcel of land known generally as
 Worldgate Parcel 12 on which Landlord may build an additional office building
 ("Plaza 111"). If Landlord (or any successor which is owner of both the Real
 Property and owner of Worldgate Parcel 12 at such time) as such owner of
 Worldgate Parcel 12, elects to proceed with construction of an office building
 on the Plaza III site, Landlord agrees to offer to lease space to Tenant in
 Plaza III in accordance with the following provisions:

            A. Prior to initial leasing of the 5th and 6th floors in Plaza III,
 Landlord shall give notice to Tenant (the "Offer Notice") of Landlord's desire
 to lease such floors to Tenant (the "RFO Space"), provided that, if Landlord
 desires at such time to offer a portion or all of the 5th and 6th floors to
 another proposed tenant in conjunction with leasing other space in Plaza 111,
 Landlord shall have a right to identify all of the space being proposed to be
 leased as well (such space, including the applicable portions of the 5th and
 6th floors and the space outside those floors is referred to collectively as
 the "Additional Space"). Tenant has 10 calendar days after receipt of
 Landlord's Offer Notice within which to notify Landlord if it elects to
 exercise its Right of Offer as to (i) the RFO Space (if there is no Additional
 Space identified in the Offer Notice) or (ii) the Additional Space (if the
 Additional Space is identified). Tenant must take all of the Additional Space
 if identified in the Offer Notice or must take all of the RFO Space (if no
 Additional Space is identified), but Tenant may not elect to take only a
 portion thereof. If there is Additional Space set forth in the Offer Notice and
 Tenant elects to lease the Additional Space, Tenant shall have a right to also
 take the balance of the 5th and 6th floors not included in the Additional
 Space. The space Tenant elects to lease, in accordance with the foregoing
 provisions, as set forth in Tenant's responsive notice ("Tenant's Election
 Notice") shall be deemed the "Offer Space." :

            B. If Tenant does not timely notify Landlord, it will be
 conclusively presumed that Tenant has waived its Right of Offer as to the RFO
 Space, Landlord shall be free to lease the RFO Space to anyone whom it desires
 and Tenant will have no further rights to the RFO Space, provided, however,
 that if after Tenant waives its right as to any such Offer Space Landlord
 desires to lease the Offer Space to a prospective tenant on materially more
 beneficial terms than provided in Landlord's Offer Notice, Landlord shall
 re-offer the Offer Space on such changed terms to Tenant before leasing to a
 third party. For purposes of this Addendum: "more beneficial terms" means an
 effective rental rate (taking into account amortization of allowances and rent
 credits on a straight line basis over the applicable term) which is less than
 the rate set forth in Landlord's Offer Notice; "materially more beneficial
 terms" means an effective rental rate (taking into account amortization of
 allowances and rent credits on a straight line basis over the applicable term)
 which is 90% or less than the rate set forth in Landlord's Offer Notice.
<PAGE>

 C. The Offer Notice shall include lease term, rental rate, finish allowance,
 terms and conditions that Landlord desires offer to lease the respective space
 to third parties (including finish allowance and lease p revisions), but in no
 event shall the rental rate be less than the per square foot rental rate that
 Tenant is paying for the Premises. Except as set forth in Landlord's Offer
 Notice, the provisions of this Lease shall be applicable to such space and, at
 Landlord's option, evidenced either in a separate lease or, if mutually agreed
 by Landlord and Tenant, amendment to this Lease; however, the provisions of
 this Addendum shall not be applicable to such space and provisions regarding
 services, calculation of Operating Expenses and other provisions applicable to
 such separate building shall be subject to separate determination and
 calculation consistent with other leases of space in Plaza III. Except any
 finish allowance and work letter provisions referred to in the Offer Notice,
 all costs of preparing the space for Tenant's occupancy, including costs of
 compliance with Applicable Laws (except for compliance that is the obligation
 of Landlord under such work letter), will be paid by Tenant. I

            D. Tenant's rights under this Paragraph 2 are conditioned on: (i)
 Tenant not being in default under the Lease at the time it delivers Tenant's
 Election Notice or on the date that Tenant's occupancy of the Offered Space is
 scheduled to commence; (ii) Tenant not having vacated or subleased more than
 25% of the Premises or assigned its interest in the Lease (except as permitted
 under Section 14.7) at the time it exercises the Right of Offer or on the date
 that Tenant's occupancy of the Offered Space is scheduled to commence; and
 (iii) there being at least 2 years remaining in the Term. Notwithstanding the
 foregoing, if there are less than two years remaining in the Term but Tenant's
 rights under this paragraph would otherwise be available to Tenant and an
 option to extend the Term is available to Tenant hereunder, Tenant may exercise
 its rights under this Paragraph provided that Tenant simultaneously exercises
 its option to extend the term of the Lease. Tenant's rights under this
 paragraph are personal to Tenant and may not be assigned (except as permitted
 under Section 14.7) and upon an assignment of the Lease (except as permitted
 under Section 14.7), this Paragraph is null and void.

       3. Landlord grants Tenant an option (the "Option") to extend the term of
 the Lease for not more than 2 additional terms of 5 years each (the "Option
 Term(s)"). The Option applies to the entirety of the Premises at such time and
 is on the following conditions:

            A. Notice of Tenant's interest in exercising the Option for the
 respective Option Term must be given to Landlord no earlier than 15 months and
 no later than 9 months prior to the expiration of the Initial Term or
 then-current Option Term, as applicable ("Tenant's Notice"). Not later than 30
 days after receiving Tenant's Notice, Landlord will notify Tenant of the Base
 Rent applicable during the respective Option Term and any allowances or
 concessions to be granted by Landlord ("Landlord's Notice").

            B. Tenant shall have 15 days following Tenant's receipt of
 Landlord's Notice within which to exercise the Option for the respective Option
 Term by delivering written notice of such exercise to Landlord at the Base
 Rent, allowances and concessions, if any, set forth in Landlord's Notice or
 delivering notice of such exercise but reserving the right to final
 determination of the Base Rent to be paid in accordance with subparagraphs E
 below ("Tenant's Dispute Notice"). If Tenant timely exercises the Option for
 the respective Option Term, the Lease shall be deemed extended and thereafter
 the parties shall execute an amendment to the Lease setting forth the extension
 for the Option Term and the rental rate applicable upon determination of the
 Base Rent applicable in accordance with subparagraph E below.

            C. Unless Landlord is timely notified by Tenant in accordance with
 subparagraphs A and B above, it will be conclusively deemed that Tenant has not
 exercised the Option and the Lease will expire in accordance with its terms on
 the expiration of the Initial Term or then-current Option Term, as applicable.

            D. Tenant's rights pursuant to this Paragraph are personal to Tenant
  and may not be assigned except an assignment permitted under Section 14.7.
  Tenant's right to exercise the Option is conditioned on: (i) there not being
  an Event of Default by Tenant at the time of exercise or at the time of
  commencement of the Option Term; (ii) Tenant not having subleased or vacated
  more than 25 % of the Premises or assigned its interest under the Lease as of
  the commencement of the Option Term (except as permitted under Section 14.7);
  and (iii) Tenant having the financial ability to perform its

                                        2
<PAGE>

 obligations under the Option Term. Upon an assignment of the Lease (except an
 assignment permitted under Section 14.7), this Paragraph is null and void.

            E. Following delivery of Tenant's Dispute Notice, Landlord and
 Tenant shall promptly initiate negotiations to determine a mutually acceptable
 Base Rent. If the parties mutually agree upon a Base Rent rate, such agreed
 rate shall be the Base Rent rate applicable during the Option Term. If the
 parties have not agreed upon the terms as of the 20th day after the date of
 Tenant's Dispute Notice, then Landlord and Tenant shall, within thirty (30)
 days after Tenant's delivery of Tenant's Dispute Notice agree upon a qualified
 commercial real estate broker of good reputation, having at least five (5)
 years' experience in the northern Virginia real estate market; if Landlord and
 Tenant cannot agree upon the broker, then they shall each select, within the
 foregoing twenty-day period, a real estate broker who meets the above
 qualifications and together such brokers will then select as the arbitrator a
 real estate broker who meets the above qualifications (the broker selected
 shall be deemed the "Arbitrator" hereunder). Within ten (10)) days of selection
 of the Arbitrator, Landlord and Tenant each shall state, in writing, their
 determination of the Prevailing Market Rental Rate supported by the reasons
 therefor and shall make counterpart copies for each other and the Arbitrator,
 under an arrangement for simultaneous exchange of the determinations. The
 Arbitrator will review each party's declaration of the Prevailing Market Rental
 Rate and select the one which he determines most accurately reflects such
 Arbitrator's determination of the Prevailing Market Rental Rate. The Arbitrator
 shall have no right to propose a middle ground or any modifications of either
 of the two proposed resolutions. The Base Rent to paid during the Option Term
 shall be the Prevailing Market Rental Rate so determined and Tenant shall have
 the right to receive the allowance and concessions, if any, set forth in
 Landlord's Notice. The costs incurred in connection with engaging the
 Arbitrator shall be shared equally by Landlord and Tenant, and shall be
 determined at the time the Arbitrator is selected. For purposes of this
 Paragraph, Prevailing Market Rental Rate shall mean the annual amount per
 square foot (including the then-current Operating Expenses) that a willing
 tenant would pay and a willing landlord would accept following arms-length
 negotiations with respect to an "Assumed Lease" (as defined below) under the
 circumstances then obtaining. "Assumed Lease" means (i) a lease or renewal
 having a commencement date within 6 months of Tenant's Notice for space of
 approximately the same ' size as the Premises of the Building or a "Comparable
 Building," as hereinafter defined, located in a portion of the Building or such
 Comparable Building, and with a view and floor height similar to the portion of
 the Premises for which Prevailing Market Rental Rate is being determined, for a
 term equal in length to the Option Term; (ii) assuming that a real estate
 commission is payable with respect to such lease to the extent a third-party
 commission with respect to extension is agreed or obligated to be paid by
 Landlord; and (I ii) taking into consideration and making adjustment to reflect
 allowances and concessions provided in Landlord's Notice, if any, and the use
 of the Base Operating Expenses provided in Section 1.5 during the Option Term.
 "Comparable Building" shall mean any existing building or building hereafter
 constructed in the Dulles corridor of northern Virginia which is of a size,
 location, quality and prestige comparable to, and with a size and efficiency of
 floor plate, amenities, and with tenants of a stature reasonably comparable
 with the Building, provided that appropriate adjustments shall be made to
 adjust for differences in the size, location, age, efficiency of floorplate,
 and quality between such other buildings and the Building.

          F. After exercise as to the respective Option Terms or failure to
     exercise the Option, Tenant shall have no further rights to extend the
     Term.

       4. In accordance with the Work Letter, as part of the Finish Work, Tenant
  shall have the right to have signage installed on a monument to be constructed
  by Landlord, which monument shall be constructed at Landlord's cost; such
  signage shall be subject to approval by Landlord of the exact location and
  details, which approval shall not be unreasonably withheld, conditioned or
  delayed, all of which approvals shall be diligently pursued by Landlord.
  Further, the monument and Tenant's signage on the monument is subject to
  approval under Applicable Law and under the declaration of protective
  covenants applicable to the Real Property (the "Declaration"). The monument,
  which shall be designed and constructed by Landlord at Landlord's cost, is
  intended for a building name/address identifier for the entire 4 tower
  Worldgate Plaza 1, 11, 111, and IV complex and for tenants of the complex, and
  notwithstanding the above, is not exclusively for Tenant's signage; however,
  Tenant shall have the right to use 25 % of such monument signage area; the
  monument shall not be used for Tenant's signage if only the Building
  name/address identifier is permitted on such monument under the Declaration
  and Applicable Law. The costs for the design, fabrication and installation of
  such Tenant's signage shall be borne by Tenant

                                        3
<PAGE>

  (subject to the allowance provisions of the Work Letter). Tenant will bear the
 costs of removal of any signage at the termination or expiration of the Lease,
 including restoring or repairing damages to the monument caused by such removal
 to the condition at the time of installation. In addition, if Landlord is
 required at any time to remove any signage, including any approved signage, due
 to any Applicable Law or if Tenant elects to remove or change the signage at
 any time, Tenant shall bear the costs of such change or removal. Tenant will be
 responsible at its cost to maintain its signage in reasonably good condition
 acceptable to Landlord at Landlord's reasonable discretion; Landlord shall
 maintain the monument as part of the Common Areas and shall require other
 tenants to maintain their respective signage. In addition to the monument
 signage, Tenant shall have the right to install a corporate identification sign
 on the exterior of the Building facing the Dulles Toll/Access Roads out of the
 Allowance or, if there is no balance of the Allowance available, at Tenant's
 expense; Landlord shall not install or permit to be installed by any tenant of
 another building any other such identification signage on the Building except
 signage identifying the name or address number of the Building. Such Building
 signage shall be subject to approval (including with respect to location,
 style, size, material, and method of application) by Landlord which approval
 shall not be unreasonably withheld, conditioned or delayed, under Applicable
 Laws and under the Declaration (which approvals shall be diligently pursued by
 Landlord. Tenant shall not otherwise affix signage to the outside of the
 Building and no signage shall be affixed to the inside of the Building that is
 visible outside the Building without the approval of Landlord, which approval
 shall not be unreasonably withheld or delayed. Landlord shall erect signage at
 the Real Property, in connection with construction of the Building, announcing
 Tenant's occupancy of the Building. The rights granted to Tenant pursuant to
 this Paragraph are personal to Tenant and any assignees (except an assignee
 permitted under Section 14.7) or subtenants of Tenant have no rights under this
 Section.

       5. During the Term, Tenant shall have a right to use the roof of the
 Building for the purpose of installing, maintaining and operating on a portion
 of the roof of the Building ("Roof'), the actual location to be designated by
 Landlord, in Landlord's reasonable discretion ("Roof Space"), non-penetrating
 (or alternative attachment methods approved by Landlord) microwave/satellite
 dishes and antennae, not to exceed one meter in diameter or height (the
 "Dishes"), and (2) screening, equipment, conduits, cables and materials to be
 located on the Roof Space or in other parts of the Building serving the Dishes
 (collectively, the "Related Equipment") in accordance with the terms of this
 Section. All costs and expenses related to installation (including costs of
 acquiring any required permits therefor or approvals under the Declaration),
 maintenance, operation and removal of the Dishes and Related Equipment shall be
 borne by Tenant but Tenant shall not pay any additional fee or Rent for use of
 the Dishes and the Related Equipment under this Lease. Landlord shall not
 license to others the right to use the roof for dishes or other communications
 devices without the prior consent of Tenant, which consent shall not be
 unreasonably withheld with respect to Landlord's licensing of roof space for
 purposes of accommodating other tenants in the Worldgate Plaza 1, 11, 111 and
 IV complex, provided that such use cannot reasonably be accommodated elsewhere
 in the complex, the dishes or devices do not include visible signage, and such
 tenants' use does not interfere with Tenant's existing or planned usage of the
 roof.

            A. Tenant will not use the Roof for any purpose other than operation
 of the Dishes and Related Equipment for Tenant's business operations, but shall
 not have any right to license or otherwise provide use of the Dishes and
 Related Equipment to others. Tenant's Agents agree to be accompanied at all
 times by Landlord's designated representative when access to the Roof Space or
 Related Equipment areas is necessary for installation, repair and maintenance;
 Landlord will make such representative available upon reasonable prior notice.
 Tenant will make every reasonable effort to minimize the number of service
 calls made to the Roof Space or Related Equipment areas and will enter such
 only for required maintenance or in case of an emergency. Tenant must secure
 and maintain at all times all required approvals and permits of the Federal
 Communications Commission and all other governmental bodies having jurisdiction
 over its business, including its communications, operations and facilities.
 Landlord may terminate Tenant's right to use the Roof under this Section upon
 notice to Tenant, if: (a) Landlord reasonably determines that such installation
 or use materially interferes with the operation of machinery and apparatus of
 the Building, such as the elevators, and Tenant fails to remedy such condition
 within 8 hours after notice; or (b) it is found by public authority having
 jurisdiction over the Building that the installation and use constitute a
 nuisance or hazard to the public or to the occupants of the Building; or (c)
 Landlord reasonably determines that the use of such Dish interferes with the
 use of any tenant's equipment or data processing machines in the

                                        4
<PAGE>

 in Plaza II or surrounding areas and Tenant fails to remedy such situation
 within 8 hours after notice to Tenant; or (d) this Lease expires or is
 terminated.

            B. Upon expiration or earlier termination, Tenant will, at its sole
 cost and expense, remove the Dishes and the Related Equipment and return the
 Roof Space to the condition existing prior to such installation. Tenant will
 keep and maintain the Dishes and the Related Equipment in good condition and
 repair, at its sole expense, in a manner that does not conflict or interfere
 with the use of other facilities installed in the Building or on the Roof.
 Further, Tenant will not damage or permit damage to the Roof or the Building in
 conjunction with the Dishes and the Related Equipment. The Dishes and Related
 Equipment will be of types and frequencies that do not cause interference with
 other equipment or operations in the Building, Plaza 11, or surrounding areas.

            C. All transmitters must be equipped with any transmitter isolator
 device necessary to minimize spurious radiation. If the Dishes or the Related
 Equipment causes interference, Tenant will take all steps necessary to
 eliminate the interference. Notwithstanding anything to the contrary set forth
 in the default section of the Lease, if the interference is not eliminated, as
 reasonably determined by Landlord, within 8 hours after Tenant receives
 Landlords notice thereof, Tenant will be liable for all of Landlord's actual
 damages (excluding consequential damages) resulting therefrom and will
 temporarily disconnect and shut down the Dishes (except for intermittent
 operation for the purpose of correcting the interference) until the
 interference is eliminated and Tenant shall indemnify Landlord for all claims
 of third parties with respect to such interference. If Tenant fails to cease
 operations at the request of Landlord, Landlord will be entitled to injunctive
 relief and the cost of obtaining such relief will be paid by the prevailing
 party. Landlord makes no warranty that the Roof Space is suitable for the
 Dishes or that it will perform according to Tenant's requirements.

            D. Landlord and its agents, employees, contractors or anyone else
 permitted by Landlord to be on the Roof may from time to time repair, replace,
 maintain, or install additional improvements or fixtures on the Roof. If
 Landlord permits other licensees to install other rooftop equipment, Landlord
 shall use reasonable efforts to coordinate such installation with Tenant so as
 to minimize the likelihood of such other equipment interfering with Tenant's
 operations and Landlord shall not permit third parties to install equipment
 (other than equipment necessary for operation of the Building) that interferes
 with Tenant's operations. Tenant will cooperate in any repair, replacement,
 maintenance and installation as reasonably required by Landlord from time to
 time.

            E. Tenant will, at Tenant's sole cost and expense, comply with all
 Applicable Laws, or the requirements of Landlord's insurance underwriters
 relating to the installation, maintenance, height, location, use, operation,
 and removal of said Dishes and Related Equipment and indemnify Landlord against
 any loss, cost, or expense incurred resulting from the installation,
 maintenance, operation, or removal of said Dishes and Related Equipment.
 Landlord makes no representation that Applicable Laws permit the installation
 or operation of the Dishes or Related Equipment.

            F. The insurance required to be carried by Tenant under Section 16.2
 shall provide coverage with respect to the ownership, operation and use of the
 Dishes and the Related Equipment. Landlord has no responsibility or liability
 for damage to the Dishes or the Related Equipment.

       6. Tenant shall have the right to install a supplemental generator (the
 "Generator") to provide emergency additional electrical capacity to the
 Premises in accordance with the following provisions:

             A. The Generator shall be a diesel-powered generator with an above
ground fuel tank integrated into the generator equipment (not a free-standing
tank) (the "Tank") to provide fuel to such Generator. The Generator is
anticipated to be placed at a location at the Property in the parking garage or
at an exterior location specified by Landlord; Landlord shall specify the final
location following Landlord's final approval of the Generator specifications and
all necessary governmental and regulatory approval. Notwithstanding the
foregoing, Tenant's right to install the Generator shall be subject to
Landlord's reasonable approval of the manner in which the Generator, including
Tank, are installed, the manner in which any cables are run to and from the
Generator to the Premises and the measures that will be taken to eliminate any

                                        5
<PAGE>

 vibrations or sound disturbances from the operation of the Generator. Landlord
 shall have the right to require an acceptable enclosure to hide or disguise the
 existence of the Generator and to minimize any adverse effect that the
 installation of the Generator may have on the appearance of the Building and
 Property. Tenant shall be solely responsible for obtaining all necessary
 governmental and regulatory approvals and for the cost of installing,
 operating, maintaining and removing the Generator and Tank. Tenant shall also
 be responsible for the cost of all utilities consumed in the operation of the
 Generator.

            B. Tenant shall be responsible for assuring that the installation,
 maintenance, operation and removal of the Generator, including Tank, will in no
 way damage the Building or Property. Tenant agrees to be responsible for any
 damage caused to the Building or Property in connection with the installation,
 maintenance, operation or removal of the Generator and, in accordance with the
 terms of Section 16 of the Lease, to indemnify, defend and hold Landlord
 harmless from all liabilities, obligations, damages, penalties, claims, costs,
 charges and expenses, including, without limitation, reasonable architects' and
 attorneys' fees (if and to the extent permitted by law), which may be imposed
 upon, incurred by, or asserted against Landlord, the Building Manager, or
 Mortgagee in connection with the installation, maintenance, operation or
 removal of the Generator and Tank, including, without limitation, any
 environmental and hazardous materials claims.

            C. Tenant shall be responsible for the installation, operation,
 cleanliness, maintenance and removal of the Generator, Tank and appurtenances,
 all of which shall remain the personal property of Tenant, and shall be removed
 by Tenant at its own expense at the termination of the Lease; provided,
 however, that Tenant shall have the right to leave such equipment on the
 Property if approved by Landlord prior to expiration or earlier termination of
 the Lease. Tenant shall repair any damage caused by such removal, including the
 patching of any holes to match, as closely as possible, the color surrounding
 the area where the Generator and appurtenance were attached. Such maintenance
 and operation shall be performed in a manner to avoid any unreasonable
 interference with any other tenants or Landlord. Tenant agrees to maintain the
 Generator, including without limitation, any enclosure installed around the
 Generator in good condition and repair. Tenant shall be responsible for
 performing any maintenance and improvements to any enclosure surrounding the
 Generator so as to keep such enclosure in good condition.

            D. Subject to the reasonable rules and regulations adopted by
  Landlord, Tenant shall have access to the Generator and its surrounding area
  for the purpose of installing, repairing, maintaining and removing said
  Generator.

          E. Tenant shall only test the Generator before or after normal
     business hours and upon prior notice to Landlord.

       7. In accordance with Landlord's Drawings (as referred to in the Work
  Letter), three 4 inch conduits shall be available to provide
  telecommunications connections from the public right-of-way adjacent to the
  Building , one of which has been made available to Bell Atlantic for
  connections, and four 4 inch vertical risers shall be available within the
  Building for such services. In addition to the conduits reflected in
  Landlord's Drawings, Landlord shall install a 4 inch conduit connecting
  telephone closets on the 5' floors of Plaza II and Plaza I (the Building).
  Subject to Applicable Laws and necessary governmental approvals, Tenant, at
  Tenant's sole cost and expense, shall have the right to contract for the
  provision of telecommunications through such conduits and risers during the
  Term and to install additional conduit for telecommunications fiber to the
  Building (in locations subject to Landlord's reasonable approval) and to
  install additional risers within the Building (in locations subject to
  Landlord's reasonable approval). Landlord shall cooperate with Tenant to the
  extent reasonably required to obtain such services, but Landlord shall not be
  obligated to incur additional obligations or incur costs (unless such actual
  costs are borne by Tenant).

                                        6
<PAGE>

       IN WITNESS WHEREOF, the parties hereto execute this Addendum.

 ONEPOINT COMMUNICATIONS CORP., a       WGP ASSOCIATES, LLC, a Virginia limited
 liability
 Delaware corporation                   company

 By:  _____________________________    By:  _____________________________
 Print Name: ______________________
 Authorized Signatory
 Print Title: _______________________
 "Landlord"

 ATTEST:
 By:  _____________________________
 Print Name: ______________________
 Print Title: _______________________

                         "Tenant"

 By:
 Print Name: Print Title:

                           "Tenant"

                                        7
<PAGE>

                                    WORLDGATE
                                      PLAZA
                                        I

 DAVIS -CARTER -SCOTT                              TYPICAL OFFICE FLOOR 5,6,7,8
 07/06/99
<PAGE>

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 E-4
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 1 0     a I    f 0
 L L
     WORLDGATE PLAZA I ENTRY
 A
 I I    I    I,
 WORLDGATE PLAZA I & 11 D A V I S C A R T E R S C 0 T T PARKING LEVEL TWO & FACE
 ONE SITE PLAN "WORLDGATE PLAZA I[ --WORLDGATE PLAZA 11 ENMY
     N
       06/28/99
<PAGE>

                                    EXMBIT B
                                    TO LEASE

                                      REAL
                                    PROPERTY

 Parcel 28-A as shown on the plat entitled "Plat of Subdivision and Dedication
 of Various Easements through the property of Worldgate Associates Limited
 Partnership" attached to that certain Deed of Subdivision and Easement, by and
 between Worldgate Associates Limited Partnership and The Town of Herndon, dated
 August 27, 1998 and recorded September 29, 1998 in Deed Book 10587, page 129,
 among the Land Records of Fairfax County, Virginia
<PAGE>

                                    EXMBIT C
                                    TO LEASE

                                    OPERATING
                                    EXPENSES

          6.1 Definitions. The additional terms below have the following
     meanings in this Lease:

                    (1) "Base Operating Expenses" means an amount equal to the
 Operating Expenses for the calendar year identified as the Base Year in Section
 1.5, as determined by Landlord in accordance with this Exhibit C. Tenant
 acknowledges Landlord has not made any representations or warranties that the
 Base Operating Expenses will equal any specified amounts (any estimates
 provided by Landlord are non-binding estimates only).

                    (2) " Landlord's Accountants" means that individual or firm
 employed by Landlord from time to time to keep the books and records for the
 Building Complex, and/or to prepare the federal and state income tax returns
 for Landlord with respect to the Building Complex, which books and records
 shall be certified to by a representative of Landlord. All determinations made
 hereunder shall be made by Landlord's Accountants unless otherwise stated.

                    (3) "Rentable Area" means 80,582 rentable square feet of
 space. If the total rentable area changes as a result of remeasurement in
 accordance with the Addendum, Landlord's Accountants shall make such
 adjustments in the computations as are necessary to provide for such change.

                    (4) "Tenant's Pro Rata Share" means the percentage set forth
 in Section 1.5. If Tenant, at any time during the Term, leases additional space
 in the Building or if the Rentable Area is adjusted in accordance with the
 Addendum, Tenant's Pro Rata Share shall be recomputed by dividing the total
 rentable square footage of space then leased by Tenant (including any
 additional space) by the Rentable Area and the resulting figure shall also
 become Tenant's Pro Rata Share. If Tenant leases additional space in another
 building in the Building Complex in accordance with the Addendum or (3) above,
 the operating expenses to be borne by Tenant with respect to such space shall
 be determined in accordance with the Lease document adding or otherwise leasing
 such space.

                    (5) "Operating Expense Year" means each calendar year during
 the Term, except that the first Operating Expense Year shall be calendar year
 2000 and the last Operating Expense Year begins on January I of the calendar
 year in which this Lease expires or is terminated and ends on the date of such
 expiration or termination. If an Operating Expense Year is less than twelve
 (12) months, Operating Expenses for such year-shall be prorated.

                    (6) "Operating Expenses" means all operating expenses of any
 kind or nature which are in Landlord's reasonable judgment necessary,
 appropriate, or customarily incurred in connection with the operation and
 maintenance of the Building Complex. Operating Expenses include:

          (a) All real property taxes and assessments levied against the
     Building and a proportionate share of amounts levied against the rest of
     the Building Complex by any governmental or quasi-governmental authority or
     under any covenants, declarations, easements or restrictions, including
     taxes, assessments, surcharges, or service or other fees of a nature not
     presently in effect which are hereafter levied on the Building Complex as a
     result of the use, ownership or operation of the Building Complex or for
     any other reason, whether in lieu of or in addition to, any current real
     estate taxes and assessments. However, any taxes which are levied on the
     rent of the Building Complex will be determined as if the Building Complex
     were Landlord's only real property. In no event do taxes and assessments
     include any federal or state income taxes levied or assessed on Landlord.
     Expenses for tax consultants to contest taxes or assessments are also
     included as Operating Expenses (all of the foregoing are collectively
     referred to herein as "Taxes"). Taxes also include special assessments,
     license taxes, business license fees, business license taxes, commercial
     rental taxes, levies, charges, penalties or taxes, imposed by any authority
     against the Premises, Building Complex or any legal or equitable interest
     of Landlord. Special assessments are deemed payable in such number of
     installments permitted by law, whether or not actually so paid,
<PAGE>

 and include any applicable interest on such installments. Taxes (other than
 special assessments) are computed on an accrual basis based on the year in
 which they are levied, even though not paid until the following Operating
 Expense Year;

          (b) Costs of supplies, including costs of relamping and replacing
     ballasts in all Building standard tenant lighting;

          (c) Costs of energy for the Building Complex, including costs of
     propane, butane, natural gas, steam, electricity, solar energy and fuel
     oils, coal or any other energy sources;

          (d) Costs of water and sanitary and storm drainage services;

          (e) Costs of janitorial and security services provided by Landlord in
     accordance with the Lease;

          (f) Costs of general maintenance, repairs, and replacements including
     costs under HVAC and other mechanical maintenance contracts; and repairs
     and replacements of equipment used in maintenance and repair work;

          (g) Costs of maintenance, repair and replacement of landscaping;

          (h) Insurance premiums for the Building Complex, including all-risk or
     multi-peril coverage, together with loss of rent endorsement; the part of
     any claim paid under the deductible portion of any insurance policy carried
     by Landlord; public liability insurance; and any other insurance carried by
     Landlord on any component parts of the Building Complex;

          (i) All labor costs (other than those excluded under clause (xxxvi)
     below), including wages, costs of worker's compensation insurance, payroll
     taxes, fringe benefits, including pension, profit-sharing and health, and
     legal fees and other costs incurred in resolving any labor dispute;

          0) Professional building management fees (not to exceed 3 % of gross
     Rent for the respective Operating Expense Year), costs and expenses,
     including costs of office space and storage space required by management
     for performance of its services;

          (k) Legal, accounting, inspection, and other consulting fees
     (including fees for consultants for services designed to produce a
     reduction in Operating Expenses or improve the operation, maintenance or
     state of repair of the Building Complex);

          (1) Costs of capital improvements and structural repairs and
     replacements to the Building Complex to conform to changes subsequent to
     the date of issuance of the shell and core certificate of occupancy for the
     Building in any Applicable Laws (herein "Required Capital Improvements");
     and the costs of any capital improvements and structural repairs and
     replacements designed primarily to reduce Operating Expenses (herein "Cost
     Savings Improvements"). Expenditures for Required Capital Improvements and
     Cost Savings Improvements will be amortized at a market rate of interest
     over the useful life of such capital improvement (as determined by
     Landlord's Accountants); however, the amortized amount of any Cost Savings
     Improvement in any year will be equal to the estimated resulting reduction
     in Operating Expenses; and

          (m) Costs incurred for Landlord's Accountants including costs of any
     experts and consultants engaged to assist in making the computations;

  "Operating Expenses"
  do not include:
     ----

                                        2
<PAGE>

          (i) Costs of work, including painting and decorating, which Landlord
     performs for any tenant other than work of a kind and scope which Landlord
     is obligated to furnish to all tenants whose leases contain a rental
     adjustment provision similar to this one;

          (ii) Costs of repairs or other work occasioned by fire, windstorm or
     other insured casualty to the extent of insurance proceeds received;

          (iii) Leasing commissions, advertising expenses, and other costs
     incurred in leasing space in the Building;

          (iv) Costs of repairs or rebuilding necessitated by condemnation; (v)
     Interest on borrowed money or debt amortization, except as specifically set
     forth above; (v i) Depreciation on the Building Complex;

          (vii) payment of principal or interest due under any mortgage or deed
     of trust;

          (viii) depreciation or amortization of costs required to be
     capitalized in accordance with generally accepted accounting principles
     ("Capital Improvements") (other than Permitted Capital Improvements);

          (ix) the cost of roof replacement (as distinguished from repairs);

          (x) compensation paid to officers of Landlord or officers of the
     management agent or anyone else above the level of building manager;

          (xi) the cost of tools, equipment and material used in, and all other
     costs associated with, the initial construction of the Building and the
     Project;

          (xii) costs directly resulting from the gross negligence or willful
     misconduct of Landlord or its employees or agents;

          (xiii) costs for which Landlord is reimbursed by any insurance
     required to be carried hereunder or actually carried by Landlord (excluding
     a reasonable deductible);

          (xiv) costs for any structural maintenance constituting Capital
     Improvements or replacement or redesign of the structure (except for
     Permitted Capital Improvements);

          (xv) leasing commissions, legal fees and other expenses incurred by
     Landlord or agents in connection with negotiations or disputes with tenant
     or prospective tenant (other than with Tenant's sublessees or assignees)
     for the Building or Complex;

          (xvi) costs or expenses associated with the enforcement of any leases
     (other than with Tenant, Tenant's sublessees or assignees) by Landlord,
     other than customary property management issues;

          (xvii) costs or fees relating to the defense of Landlord's title or
     interest in the real estate containing the Building or Project, or any part
     thereof, (xviii) costs incurred by Landlord in connection with the initial
     construction of the Building, Project and related facilities; (xix)
     expenses for the correction of defects in Landlord's initial construction
     of the Building or Project; (xx) any costs or expenses relating to
     Landlord's obligations under any work letter to construct

          tenant improvements; (xxi) allowances, concessions, permits, licenses,
     inspections, and other costs and expenses incurred in completing,
     fixturing, renovating or otherwise improving, decorating or redecorating
     space for tenant (including Tenant), prospective tenants or other occupants
     or prospective occupants of the building, or vacant leasable space in the
     Building, or constructing or finishing demising walls and public corridors
     with respect to any such space whether such work or alteration is performed
     for the initial occupancy by such tenant or occupant or thereafter (except
     for Permitted Capital Improvements);

          (xxii) any cash or other consideration paid by Landlord on account of,
     with respect to or in lieu of the tenant work or alterations;

          (xxiii) Landlord's costs of any services sold or provided to tenants
     for which Landlord is entitled to be reimbursed by such tenants under the
     lease with such tenants (including the separately metered electricity for
     the Building which is being for by Tenant in accordance with Section 7.2),
     other than under an operating expense provision similar to this one;

                                        3
<PAGE>

          (xxiv) expenses in connection with services or other benefits of a
     type which are not made available to Tenant but which are provided to
     another tenant or occupant;

          (xxv) costs incurred due to violation by Landlord or any tenant of the
     terms and conditions of any lease;

          (xxvi) any expense for Landlord's advertising and promotional program
     for the Building or the Complex;

          (xxvii) renovation of the Building made necessary by the exercise of
     eminent domain;

          (xxviii) any cost incurred to Landlord or an affiliate of Landlord for
     the provision of any goods or services, to the extent such cost exceeds the
     cost then prevailing in similar transactions between unrelated parties;

          (xxix) ground rent;

          (xxx) legal fees (except for contesting tax assessments and/or for
     personnel matters relating to employees of the Building), or other
     professional or consulting fees (except such other professional and
     consulting fees that are directly related to the maintenance, operation or
     management of the Building);

          (xxxi) any compensation paid to clerks, attendants or other persons in
     commercial concessions operated for profit by Landlord or in the parking
     garage of the Building if operated for profit;

          (xxxii) increased insurance premiums caused by Landlord's or any
     tenant's unusual hazardous activities;

          (xxxiii) moving expense costs of tenants of the Building;

          (xxxiv) costs arising from the presence of hazardous materials or
     substances in or about or below the Building, the Land, or the Project,
     including without limitation, hazardous substances in the groundwater or
     soil (other than ordinary maintenance costs, including changing of filters,
     etc.);

          (xxxv) costs incurred for any items to the extent of Landlord's
     recovery under a manufacturer's, materialmen's, vendor's or contractor's
     warranty;

          (xxxvi) wages, salaries or other compensation or benefits for offsite
     employees applicable to the time spent working at other buildings, other
     than the Building manager (provided that with respect to each employee that
     services the Building and other buildings, a pro rata share of such
     employee's salary shall be included in Base Year Operating Expenses, as
     applicable);

          (xxxvii) costs of acquisition of sculptures, paintings, or other
     objects of art;

          (xxxviii) the rent or expenses in lieu of rent for any onsite leasing
     office of Landlord in the Building, or of any other space (except the
     management office and storage space serving the Building) in the Building
     set aside for storage or other facilities for the benefit of Landlord;

          (xxxix) any other expenses for which Landlord actually receives direct
     reimbursement from insurance, condemnation awards, warranties, other
     tenants or any other source; (xl) reserves for repairs, maintenance and
     replacements; (Eli) Landlord's general overhead expenses;

          (xlii) accounting fees other than those attributable to reviewing and
     preparing operating statements for the Building and paying operating
     expenses;

          (xliii) capital costs incurred to achieve compliance with any
     governmental laws, ordinances, rules, regulations or orders (other than
     Permitted Capital Improvements), or (xliv) any costs due to correction of
     any "Year 2000" problems associated with any system servicing the Building.

 To the extent that employees, utilities or other services or costs are
 attributable to the Building and other buildings on a common basis or are
 provided for Common Areas, such Operating Expenses shall be reasonably prorated
 by Landlord to reflect costs to be allocated hereunder to the Building; it is
 assumed that the electricity for the Common Areas, including the parking garage
 shared with Plaza 11, are reasonably prorated already by being covered by
 separate meters for the buildings (which metered electricity for the Building
 is paid for by Tenant under Section 7.2 of the Lease), but there shall be a
 reasonable adjustment to such expenses if separate metering does not result in
 such reasonable proration.. If any lease entered into by Landlord with any
 tenant in the Building is on a so-called "net" basis, or provides for a
 separate basis of computation for any Operating Expenses with respect to its
 leased premises, Landlord's Accountants may modify the

                                        4
<PAGE>

 computation of Base Operating Expenses, Rentable Area, and Operating Expenses
 for a particular Operating Expense Year to eliminate or modify any expenses
 which are paid for in whole or in part by such tenant. If the Rentable Area is
 not fully occupied during the Base Year, Landlord's Accountants may adjust
 those Operating Expenses which are affected by occupancy for the particular
 Operating Expense Year to reflect 100% occupancy. Furthermore, in making any
 computations contemplated hereby, Landlord's Accountants may make such other
 modifications to the computations as are required in their judgment to achieve
 the intention of the parties hereto.

            6.2 Additional Payment . If any increase occurs in Operating
 Expenses for any Operating Expense Year during the Term (beginning with
 calendar year 2001) in excess of the Base Operating Expenses, Tenant shall pay
 Landlord Tenant's Pro Rata Share of the amount of such increase less Estimated
 Payments, if any, previously made by Tenant for Such year).

            6.3 Estimated Payments. During each Operating Expense Year beginning
 with the first month of calendar year 2001 and continuing each month thereafter
 throughout the Term, Tenant shall pay Landlord, at the same time as Base Rent
 is paid, an amount equal to 1/12 of Landlord's estimate of Tenant's Pro Rata
 Share of any projected increases in Operating Expenses for the particular
 Operating Expense Year in excess of Base Operating Expenses ("Estimated
 Payment").

            6.4     Annual Adjustments.

                    (1) Following the end of each Operating Expense Year,
 including the first Operating Expense Year, Landlord shall submit to Tenant a
 statement setting forth the exact amount of Tenant's Pro Rata Share of the
 increase, if any, of the Operating Expenses for the Operating Expense Year just
 completed over the Base Operating Expenses. Beginning with the statement for
 calendar year 2001 Operating Expense Year, each statement shall set forth the
 difference, if any, between Tenant's actual Pro Rata Share of the increase in
 Operating Expenses for the Operating Expense Year just completed and the
 estimated amount for such Operating Expense Year. Each statement shall also set
 forth the projected increase, if any, in Operating Expenses for the new
 Operating Expense Year over Base Operating Expenses and the corresponding
 increase or decrease in Tenant's monthly Rent for such new Operating Expense
 Year above or below the Rent paid by Tenant for the immediately preceding
 Operating Expense Year.

                    (2) To the extent that Tenant's Pro Rata Share of the
 increase in Operating Expenses for the period covered by a statement is
 different from the Estimated Payment during the Operating Expense Year just
 completed, Tenant shall pay Landlord the difference within 30 days following
 receipt by Tenant of the statement or receive a credit against the next due
 Rent, as the case may be. Until Tenant receives a statement, Tenant's Estimated
 Payment for the new Operating Expense Year shall continue to be paid at the
 prior Estimated Payment, but Tenant shall commence payment of Rent based on the
 new Estimated Payment beginning on the first day of the month following the
 month in which Tenant receives the statement. Tenant shall also pay Landlord or
 deduct from the Rent, as the case may be, on the date required for the first
 payment, as adjusted, the difference, if any, between the Estimated Payment for
 the new Operating Expense Year set forth in the statement and the Estimated
 Payment actually paid during the new Operating Expense Year. If, during any
 Operating Expense Year, there is a change in the information on which Tenant is
 then making its Estimated Payments so that the prior estimate is no longer
 accurate, Landlord may revise the estimate and there shall be such adjustments
 made in the monthly Rent on the first day of the month following notice to
 Tenant as shall be necessary by either increasing or decreasing, as the case
 may be, the amount of monthly Rent then being paid by Tenant for the balance of
 the Operating Expense Year.

                    (4) If Tenant assumes the responsibility for providing
  janitorial services to the Premises in accordance with Section 7.3, the costs
  of such services borne by Tenant shall not be included in Operating Expenses
  and the Base Operating Expenses shall be adjusted (for calculations applicable
  to periods when Tenant bears such costs) to deduct the cost of such services
  that are otherwise included in Base Operating Expenses. In addition, Tenant
  shall receive a Rent credit for periods during which Tenant bears such costs
  equal to the cost to Landlord of such services that would otherwise be
  included in Base Operating Expenses (prorated on a daily basis for periods
  less than a calendar year).

                                        5
<PAGE>

           6.5 Miscellaneous. In no event will any decrease in Rent pursuant to
 any provision hereof result in a reduction of Rent below the Base Rent. Delay
 by Landlord in submitting any statement for any Operating Expense Year does not
 affect the provisions of this Section or constitute a waiver of Landlord's
 rights for such Operating Expense Year or any subsequent Operating Expense
 Years.

            6.6 Dispute. If Tenant disputes an adjustment submitted by Landlord
 or a proposed increase or decrease in the Estimated Payment, Tenant shall give
 Landlord notice of such dispute within 30 days after Tenant's receipt of the
 adjustment. If Tenant does not give Landlord timely notice, Tenant waives its
 right to dispute the particular adjustment. If Tenant timely objects, Tenant
 may engage its own certified public accountants ("Tenant's Accountants") to
 verify the accuracy of the statement complained of or the reasonableness of the
 estimated increase or decrease. The person conducting the examination on behalf
 of Tenant shall enter into a confidentiality agreement satisfactory to
 Landlord, which agreement shall not preclude or bar Tenant's Accountants from
 disclosing information to Tenant. If Tenant's Accountants determine that an
 error has been made, Landlord's Accountants and Tenant's Accountants shall
 endeavor to agree upon the matter, failing which such matter shall be submitted
 to an independent certified public accountant selected by Landlord, with
 Tenant's reasonable approval, for a determination which will be conclusive and
 binding upon Landlord and Tenant. All costs incurred by Tenant for Tenant's
 Accountants shall be paid for by Tenant unless Tenant's Accountants disclose an
 error, acknowledged by Landlord's Accountants (or found to have occurred
 through the above independent determination), of more than 10% in the
 computation of the total amount of Operating Expenses, in which event Landlord
 shall pay the reasonable costs incurred by Tenant to obtain such audit.
 Notwithstanding the pendency of any dispute, Tenant shall continue to pay
 Landlord the amount of the Estimated Payment or adjustment determined by
 Landlord's Accountants until the adjustment has been determined to be
 incorrect. If it is determined that any portion of the Operating Expenses were
 not properly chargeable to Tenant, then Landlord shall promptly credit or
 refund the appropriate sum to Tenant.

                                        6
<PAGE>

                                    EXIHBIT D
                                    TO LEASE

                            COMMENCEMENT CERTIFICATE

                                                                              19

 ONEPOINT COMMUNICATIONS
 CORP. Attn: Joanne DiGuido
 2201 Waukegan Road, Suite
 E-200 Bannockburn, IL 60015

          RE: Lease dated as of the July 15, 1999 (the "Lease"), by and between
     WGP ASSOCIATES, LLC, a Virginia limited liability company, as Landlord, and
     ONEPOINT COMMUNICATIONS CORP., a Delaware corporation, as Tenant

 Dear Tenant:

      With regard to the referenced Lease, Landlord and Tenant acknowledge the
 following (initially capitalized words not otherwise defined have the same
 meaning set forth in the Lease):

          1. In accordance with Section 5 of the Lease, the Commencement Date is
     12:01 a.m., and the Expiration Date is 12:00 midnight,

      Please acknowledge the foregoing by having an authorized officer sign in
 the space provided below and return to our office. This document may be
 executed in counterparts, each of which shall constitute the original.
 Facsimile signatures shall be binding as original signatures.

                                 WGP   ASSOCIATES,   LLC,   a   Virginia
                                 limited liability company

                                 By:
                                 -------------------------------------

                                                    Authorized
                                                    Signatory

                                                          "Landlord"
   ACKNOWLEDGED AND AGREED this _ day of
         --------------------------:

   ONEPOINT COMMUNICATIONS
   CORP., a Delaware corporation

   By: ____________________________________
   Print Name: _____________________________
   Print Title: ______________________________

   ATTEST:

   By: ____________________________________
   Print Name: _____________________________
   Print Title: ______________________________

                             "Tenant"
<PAGE>

                                    EXHIBIT E
                                    TO LEASE

                                    RULES AND
                                   REGULATIONS

      I No sign, placard, picture, advertisement, name or notice shall be
 installed or displayed on any part of the outside or inside of the Building
 without the prior written consent of the Landlord. Landlord shall have the
 right to remove, at Tenant's expense and without notice, any sign installed or
 displayed in violation of this rule. All approved signs or lettering on doors
 and walls shall be printed, painted, affixed or inscribed at the expense of
 Tenant by a person or vendor approved by Landlord. In addition, Landlord
 reserves the right to change from time to time the format of the signs or
 lettering and to require previously approved signs or lettering to be
 appropriately altered at Landlord's expense.

      2. The coverings for all windows in each tenant's premises shall be
 lowered and closed as reasonably required because of the position of the sun,
 during the operation of the Building's air-conditioning system to heat, cool or
 ventilate such Premises. All tenants with premises visible from one of the
 lobbies, or any other public portion of the Building, shall furnish and
 maintain its premises in a first-class manner, utilizing furnishings and other
 decorations commensurate in quality and style with the furnishings and decor in
 the public portions of the Building. If Landlord objects in writing to any
 curtains, blinds, shades or screens attached to or hung in or used in
 connection with any window or door of the Premises, Tenant shall immediately
 discontinue such use. No awning shall be permitted on any part of the Premises.
 Tenant shall not place anything or allow anything to be placed against or near
 any glass partitions or doors or windows which may appear unsightly, in the
 opinion of Landlord, from outside the Premises.

      3. Tenant shall not obstruct any sidewalks, halls, passages, exits,
 entrances, elevators, escalators or stairways of the Building. The halls,
 passages, exits, entrances, shopping malls, elevators, escalators and stairways
 are not for the general public.

      4. The directory of the Building will be provided exclusively for the
 display or the name and location of tenants only and Landlord reserves the
 right to exclude any other names therefrom.

      5. Unless otherwise approved by Landlord, all cleaning and janitorial
 services for the Building and the Premises shall be provided exclusively
 through Landlord. Tenant shall not cause any unnecessary labor by carelessness
 or indifference to the good order and cleanliness of the Premises. Landlord
 shall not in any way be responsible to any Tenant for any loss to property on
 the Premises, however occurring, or for any damage to any Tenant's property by
 the janitor or any other employee or any other person.

      6. Landlord will furnish Tenant free of charge 322 keys or security pass
 cards, if applicable, for access to the Premises. Landlord may make a
 reasonable charge for any access devices, and Tenant shall not make or have
 made additional access devices, and Tenant shall not alter any lock or install
 a new or additional lock or bolt on any door of its Premises without Landlord's
 consent, which consent shall not be unreasonably withheld, conditioned or
 delayed. Tenant, upon the termination of its tenancy, shall deliver to Landlord
 the access devices of all doors which have been furnished to Tenant, and in the
 event of loss of any access devices so furnished, shall pay Landlord therefor.

      7. If Tenant requires telegraphic, telephonic, burglar alarm or similar
 services (other than as approved by Landlord in accordance with the Work
 Letter), it shall first obtain, and comply with, Landlord's instructions in
 their installation. Landlord, or its agents, will direct the electricians as to
 where and how the wires may be introduced, and without such direction, no
 boring or cutting for wires will be permitted. Any such installation and
 connection shall be made at Tenant's expense.

      8. No equipment, materials, furniture, packages, supplies, merchandise or
  other property will be received in the Building or carried in the elevators
  except during Ordinary Business Hours (except to the extent scheduled by prior
<PAGE>

 arrangement with Landlord) and in such elevators as may be reasonably
 designated by Landlord. Landlord shall reasonably and equitably schedule the
 use of the loading dock shared with Plaza II Building. The persons employed to
 move furnishings, fixtures and equipment in and out of the Building shall be
 subject to Landlord's approval (which approval shall not be unreasonably
 withheld, conditioned or delayed) and, if required by law, properly licensed.
 Landlord shall have the right to condition approval upon payment of an
 additional security deposit as a condition of approving a particular moving
 company. Tenant must make arrangements in advance with Landlord for moving
 large quantities of furniture and equipment into or out of the Building.

      9. Tenant shall not place a load upon any floor which exceeds the load per
 square foot which such floor was designed to carry and which is allowed by law.
 Landlord shall have the right to prescribe the weight, size and position to all
 equipment, materials, furniture or other property brought into the Building.
 Heavy objects shall stand on such platforms as determined by Landlord to be
 necessary to properly distribute such weight. Business machines and mechanical
 equipment belonging to Tenant which cause noise or vibration which may be
 transmitted to the structure of the Building or to any space in the Building to
 such a degree as to be objectionable to Landlord or to any tenants shall be
 placed and maintained by Tenant, at Tenant's expense, on vibration eliminators
 or other devices sufficient to eliminate noise or vibration. The persons
 employed- to remove such equipment in or about the Building must be acceptable
 to Landlord. Landlord will not be responsible for loss of or damage to, any
 such equipment or other property from any cause, and all damage done to the
 Building by maintaining or moving such equipment or other property shall be
 repaired at the expense of Tenant.

      10. No Tenant shall tamper with or attempt to adjust temperature control
 thermostats in its Premises; Landlord will make Building maintenance/engineers
 available during Ordinary Business Hours to make adjustments as needed. Tenant
 shall not use any method of heating or air conditioning other than that
 supplied by Landlord. Tenant shall use reasonable efforts to minimize the waste
 of electricity, water and air conditioning, consistent with normal practices
 for office tenants in northern Virginia in similar buildings. Tenant shall keep
 corridor doors closed.

      11. Landlord reserves the right to exclude from the Building outside
  Ordinary Business Hours any person unless that person is known to the person
  or employee in charge of the Building and has an access device such as a key,
  entry card, combination code, pass or is properly identified. Tenant shall be
  responsible for all persons for whom it requests passes and shall be liable to
  Landlord for all acts of such persons. Any person whose presence in the
  Building at any time shall, in the judgment of the Landlord, be prejudicial to
  the safety, character, reputation and interests of the Building or its Tenants
  may be denied access to the Building or may be ejected therefrom, including
  any person who in the judgment of Landlord is intoxicated or under the
  influence of liquor or drugs or w1io shall in any manner do any act in
  violation of these Rules and Regulations. In case of public excitement or
  other commotion, the Landlord may prevent all access to the Building during
  the continuance of the same, by closing the doors or otherwise, for the safety
  and protection of tenants, the Building, and property in the Building. The
  Landlord may require any person leaving the Building with a package or other
  object to exhibit authorization from the Tenant of the premises from which the
  package or object is removed, but the establishment and enforcement of such
  requirement shall not impose any responsibility on the Landlord to protect any
  Tenant against the removal of property from its premises. The Landlord shall
  in no way be liable to any Tenant for damages or loss arising from the
  admission, exclusion or ejection of any person to or from Tenant's Premises or
  the Building under the provisions of this rule.

      12. Tenant shall close and lock the doors or its Premises and entirely
 shut off all water faucets or other water apparatus before Tenant and its
 employees leave the Premises. Tenant shall be responsible for any damage or
 injuries sustained by other tenants or occupants of the Building or by Landlord
 for noncompliance with this rule.

      13. The toilet rooms, toilets, urinals, wash bowls and other apparatus
  shall not be used for any purpose other than that for which they were
  constructed, no foreign substance or any kind whatsoever shall be thrown into
  any of them, and the expense of any breakage, stoppage or damage resulting
  from the violation of this rule shall be borne by the Tenant who, or whose
  employees or invitees, shall have caused it.

                                        2
<PAGE>

      14. Tenant shall not install any radio or television antenna, satellite
 dish, loudspeaker or other device on the roof or exterior walls of the
 Building, except as expressly permitted in accordance with the Addendum. Tenant
 shall not interfere with radio or television broadcasting or reception from or
 in the Building or elsewhere.

      15. Except for the installation of artwork by customary installation
 methods and as otherwise approved by Landlord, such as customarily as approved
 by Landlord, Tenant shall not mark, drive nails, screw or drill into the
 partitions, woodwork or plaster or in any way deface the Premises. Tenant shall
 not cut or bore holes for wires except as normally required for installation of
 the telecommunications equipment permitted under this Lease. Tenant shall not
 affix any floor covering to the floor of the Premises in any manner except as
 approved by Landlord. Tenant shall repair any damage resulting from
 non-compliance with this rule.

      16. Tenant shall store all its trash and garbage within its Premises.
 Tenant shall not place in any trash box or receptacle any material which cannot
 be disposed of in the ordinary and customary manner of trash and garbage
 disposal. All garbage and refuse disposal shall be made in accordance with
 directions issued from time to time by Landlord, consistent with the janitorial
 services provided by Landlord and refuse removal consistent with customary
 practices for similar office buildings in northern Virginia.

      18. Smoking is prohibited at all times in all areas of the Building,
 including offices, restrooms, corridors, stairwells, lobbies, elevators, and
 Common Areas of the Building Complex, except for a specific location to be
 designated by Landlord as a smoking area to the extent permitted by Applicable
 Laws. Tenant shall not cause or permit any noise (including playing of musical
 instruments, radio or television) or unusual or objectionable odors to emanate
 from the Premises which would annoy other tenants or create a public or private
 nuisance and no cooking shall be done or permitted by any Tenant on the
 Premises, except by the Tenant of Underwriters' Laboratory approved microwave
 oven or equipment for brewing coffee, tea, hot chocolate and similar beverages
 shall be permitted provided that such equipment and use is in accordance with
 all applicable federal, state and city laws, codes, ordinances, rules and
 regulations. Tenants shall not conduct directly or indirectly any auction upon
 their premises, or permit any other person to conduct an auction upon the
 premises. Canvassing, soliciting and peddling in the Building are prohibited
 and tenants shall cooperate to prevent the same.

      19. No animals, birds, or pets of any kind, excluding seeing eye dogs,
  shall be allowed in a tenant's premises or the Building.

      20. Tenant shall not use in any space or in the public halls of the
  Building any hand trucks except those equipped with the rubber tires and side
  guards or such other material handling equipment as Landlord may approve.
  Tenant shall not bring any other vehicles of any kind into the Building and
  bicycles shall be used or stored only in areas designated by Landlord.

      21. The requirements of Tenant will be attended to only upon appropriate
  application to the office of the Building by an authorized individual.
  Employees of Landlord shall not perform any work or do anything outside of
  their regular duties unless under special instruction from Landlord, and no
  employee of Landlord will admit any person (Tenant or otherwise) to any office
  without specific instructions from Landlord. All contractors hired by Tenant
  to complete alterations to the Premises shall adhere to the provisions of the
  Lease and these Rules and Regulations, as well as such separate rules and
  regulations as Landlord may adopt as requirements for contractors.

      23. Tenant shall cooperate fully with the life safety plans of the
  Building established and administered by Landlord. This includes participation
  by Tenant and its employees in exit drills, fire inspections, life safety
  orientations and other programs relating to fire safety that may be
  promulgated by the Landlord.

       24. Landlord may waive any one or more of these Rules and Regulations for
  the benefit of any particular tenant or tenants, but no such waiver by
  Landlord shall be construed as a waiver of such Rules and Regulations in favor
  of any other

                                        3
<PAGE>

 tenant or tenants, nor prevent Landlord from thereafter enforcing any such
 Rules and Regulations against any or all of the tenants of the Building.

      25. These Rules and Regulations are in addition to, and shall not be
 construed to in any way modify or amend, in whole or in part, the terms,
 covenants, agreements and conditions of any lease of premises in the Building.

     26. Landlord reserves the right to make such other and reasonable rules and
 regulations as in its judgment may from time to time be needed for safety and
 security, for care and cleanliness of the Building and for the preservation of
 good order in and about the Building. Tenant agrees to abide by all such rules
 and regulations in this Exhibit E stated and any additional rules and
 regulations which are adopted.

     27. Tenant shall be responsible for the observance of all of the foregoing
 rules by Tenant's employees, agents, clients, customers, invitees and guests.
 [Worldgate I Form: 193277 3/5/991 4018943 7/15/99 [3258651
                                        4
<PAGE>

                               EXHIBIT F TO LEASE
                           JANITORIAL SPECIFICATIONS

 A. DAILY - Monday through Friday, except legal holidays.

      I . Empty waste baskets, clean ashtrays.

     2. Dust accessible areas of desk tops.

     3. Vacuum carpet in elevator lobbies, reception areas and other
         high-traffic areas.

 B. WEEKLY

      1. Dust accessible areas of furniture, convectors and other furnishings.

     2. Vacuum office area carpeting.

 C. MONTHLY

      1. Mop and buff tile floors.

     2. Dust Venetian blinds, window frames and exterior of lighting fixtures.

      3. Spot clean walls.

      4. Clean telephones.

 D. QUARTERLY

      1. Clean and refinish tile floors where necessary.

      2. Clean baseboards.

 E. SEMI-ANNUALLY

      1. Wash windows.

 F. ANNUALLY

      1. Wash light fixtures and lenses.

      2. Clean Venetian blinds.
<PAGE>

                               EXHIBIT G TO LEASE

                       STATEMENT OF PERFORMANCE (ESTOPPEL)

       TENANT ESTOPPEL CERTIFICATE
 From:
                  ("Tenant")

 To:

                     Purchaser")
                  ("Landlord")

 Lease:   Lease dated                               19 _, between
 a
          and                  a

                  covering the Premises (as defined below), as modified, altered
                  or amended (as further described in Paragraph I below) (the
                  "Lease").

          Premises: Suite -, consisting of a total of rentable square feet (as
     set forth in the Lease), (the "Premises") located in the building known as
     having an address of

 Tenant hereby certifies to Landlord and Purchaser as follows:

      I . Tenant is the current Tenant under the Lease. The Lease is in full
 force and effect and is the only lease, agreement or understanding between
 Landlord and Tenant affecting the Premises and any rights to parking. The Lease
 has not been modified, altered or amended, except as follows: [Seller described
 modifications, assignments or amendments to the Lease or, in none, state
 "None".]

          2. The term of the Lease commenced on 19_, and will expire on 19 -.
     The Tenant has an option to renew the Lease for additional following the
     expiration date of the Lease. Tenant has no option or right of first
     refusal to purchase the Premises. Tenant has accepted and is presently
     occupying the Premises.

          3. The base rent under the Lease for the current lease year is $ _ per
     month. Tenant is responsible to pay, as additional rent, for its pro rata
     share operating expenses for the Building in excess of base operating
<PAGE>

 expenses of ["$____ or Base Year Expense, which are the operating expenses for
 the calendar year 19--] Tenant has fully paid all rent and other sums payable
 under the Lease on or before the date of this Certificate and Tenant has not
 paid any rent more than one month in advance. Tenant is not in default under
 any of the provisions of the Lease pertaining to Tenant, and no event has
 occurred and no circumstance exists which, with the passage of time or the
 giving of notice by Landlord, or both, would constitute such a default.

      4. As of the date of this Certificate, Landlord is not in default under
 any of the provisions of the Lease pertaining to Landlord, and no event has
 occurred and no circumstance exists which, with the passage of time or the
 giving of notice by Tenant, or both, would constitute such a default.

      5. All construction to be performed and the improvements to be installed
 by Landlord on the Premises, if any, have been completed and fully accepted by
 Tenant; nor is Landlord engaged in making any repairs for Tenant.

      6. As of the date of this Certificate, Tenant has no defenses, offsets or
 credits against the payment or rent and other sums due or to become due under
 the Lease or against the performance of any other of Tenant's obligations under
 the Lease.

      7. Tenant has paid to landlord a security deposit in the
      amount of $

      8. Tenant agrees that, from and after the date hereof: (i) Tenant will not
 pay any rent under the Lease more than thirty (30) days in advance of its due
 date; and (ii) so long as there shall be any assignment of Landlord's interest
 in the Lease to a holder of a first mortgage whose name and address have been
 provided to Tenant, Tenant understands that any surrender, modification of any
 of the terms of the Lease, or early termination thereof by Landlord other than
 on account of a default, will be not effective without the written consent of
 such holder.

      9. Tenant understands that this Certificate is required in connection with
 Purchaser's acquisition of the Property, and Tenant agrees that Purchaser and
 its assigns (including any parties providing financing for the Property) will,
 and shall be entitled to, rely on the truth of this Certificate.

      10. The party executing this document on behalf of Tenant represents that
 he/she has been authorized to do so on behalf of Tenant.

      EXECUTED on this               day of
      19

                                    "TENANT"

                                        2
<PAGE>

                                  EXMBIT H TO
                                     LEASE

                                      HVAC
                                     RATES

 The following charges shall be the only charges applicable to use of the
 Building heating, ventilation, air-conditioning system (HVAQ after Ordinary
 Business Hours (other than electricity which is included in electricity charges
 that are separately metered to Tenant):

          After-hours operation of fans only (excluding chiller/air-conditioning
     use): $23.50 per hour After-hours operation of chiller/air-conditioning:
     $37.50 per hour

 The foregoing charges are for use of all or any portion of the Building,
 calculated on an hourly basis (without proration for partial hours).
 [Worldgate I Form: 193277 3/5/991
 40189437/15/99 [3258651
<PAGE>

                                    EXHIBIT I
                                    TO LEASE

                                    LETTER OF
                                     CREDIT

                                                                           1999

 WGP ASSOCIATES, LLC c/o Miller Global
 Properties, LLC 4643 S. Ulster Street,
 Suite 1500 Denver, CO 80237 Attn: Donald
 E. Spiegleman, Esq. or Mr. Paul Hogan

      RE: Letter
      of Credit
      No.

 Gentlemen:

      We hereby issue in your favor, at the request and for the account of
 ONEPOINT COMMUNICATIONS CORP., a Delaware corporation, our irrevocable Letter
 of Credit in the amount of $$1,029,435.00 which is available against
 presentation of your sight draft. The amount of the credit shall automatically
 reduce without amendment by $171,572.50 to $857,862.50 on December 1, 2001, by
 $171,572.50 to $686,290.00 on December 1, 2002, by $171,572.50 to $514,717.50
 on December 1, 2003, by $171,572.50 to $343,145.00 on December 1, 2004. The
 draft must be accompanied by:

                   I. This Letter of Credit No.
                   and

                   2. A notarized certification signed as Authorized Signatory
                   on behalf of WGP ASSOCIATES, LLC, a Virginia limited
                   liability company, or an officer (or partner, if such entity
                   is a partnership or member if a limited liability company) of
                   its transferee or assignee, stating essentially as follows:

                   "The           undersigned Beneficiary is the owner of the
                                  property described in the Office Lease dated
                                  by and between WGP ASSOCIATES, LLC, a Virginia
                                  limited liability company, as Landlord, and
                                  ONEPOINT COMMUNICATIONS CORP., a Delaware
                                  corporation, as Tenant (the "Lease"). The
                                  amount requested by the draft accompanying
                                  this statement is the amount to which
                                  Beneficiary is entitled under the terms of the
                                  Lease as a result of an Event of Default under
                                  the Lease and Beneficiary requests payment of
                                  the enclosed draft under the enclosed Letter
                                  of Credit."

          This Letter of Credit shall be subject to the Special Conditions set
 forth on Exhibit 1, such exhibit being considered a part hereof and
 incorporated herein by reference.
<PAGE>

          We hereby agree that all drafts drawn under and in compliance with the
 terms of this credit shall meet with honor upon presentation and delivery of
 documents on or before 5:00 p.m., Eastern time, as specified to the drawee,
 which date shall be the expiration date of this Letter of Credit. By: Title:

                                        2
<PAGE>

                               EXHIBIT I TO LEASE

                                       To
                                     Letter
                                       of
                                     Credit
                                      No.

      The Letter of Credit shall be governed by the following Special
      Conditions:

          I. This Letter of Credit shall be governed by and construed in
     accordance with the provisions of Uniform Customs and Practice for
     Documentary Credits, I.C.C. Publication No. 500, 1983 Revision, 290,
     effective October 1, 1975.

      2. Issuer agrees that it may not defer honor beyond the close of the first
 banking day after presentment of a sight draft drawn hereunder and accompanying
 documents.

      3. This Letter of Credit shall be transferable and assignable, without
 charge, to any person or entity who is the successor or assignee of
 Beneficiary's interest under the Lease entered into on or about , between WGP
 ASSOCIATES, LLC, a Virginia limited liability company, as Landlord, and
 ONEPOINT COMMUNICATIONS CORP., a Delaware corporation. Such transfer shall be
 accomplished by providing the issuer of this Letter of Credit with the
 appropriate transfer form and the original letter of credit for endorsement;
 provided, however, that such transfer shall not be subject to the approval of
 the issuer.
<PAGE>

                               EXIHBIT J TO LEASE

                                  PARKING AREA

 The location of the visitor parking spaces for the Building is indicated (by
 labeling and shading) on the attached Site Plan.
 [Worldgate I Form: 193277 3/5/991
 40189437/15/99 [3258651
<PAGE>

                           WORLDGATE PLAZA I ENTRY x
                             WORLDGATE PLAZA I & 11

                                 PLAZA 11 ENTRY
                                       14
          DA VIS -CARTER -SCOTT PARKING LEVEL TWO& FACE ONE SITE PLAN
                                    06/28/99
<PAGE>

                                   WORK LETTER
                              Tenant Performs Work

         July
         15, 1999

         ONEPOINT COMMUNICATIONS CORP.
         Attn: Joanne DiGuido
         2201 Waukegan Road, Suite E-200
         Bannockburn, IL 60015

          Re: Tenant: ONEPOINT COMMUNICATIONS CORP., a Delaware corporation
     Premises: Approximately 80,582 rentable square feet of space on the 5th,
     6th, 7th and 8th floors (the "Premises")

          Address:         12901 Worldgate Drive, Herndon, Virginia

          Gentlemen:

                  Concurrently herewith, you ("Tenant") and the undersigned
         ("Landlord") have executed a Lease (the "Lease") covering the Premises
         (the provisions of the Lease are hereby incorporated by reference as if
         fully set forth herein and initially capitalized words not defined have
         the same meaning set forth in the Lease). In consideration of the
         execution of the Lease, Landlord and Tenant mutually agree as follows:

          1. Space Planning and
          Engineering

         1.1 Landlord has provided to Tenant the architectural and engineering
         drawings for the base building improvements for the Building Complex to
         be completed by Landlord ("Landlord's Drawings")(as further described
         on Exhibit 4 to this Work Letter), as prepared by Davis, Carter & Scott
         Architects (such architectural firm or its replacement, if replaced by
         Landlord prior to completion of construction, is referred to as the
         "Landlord's Architect"). Landlord shall have the right to make changes
         and modifications in the base building improvements during construction
         and Landlord shall provide copies to Tenant -of modifications to
         Landlord's Drawings promptly as and when available to reflect such
         modifications for portions of the drawings applicable to the Premises;
         Tenant shall have the right to approve (which approval shall not be
         unreasonably withheld, conditioned or delayed) substantial changes to
         the Building Complex (exclusive of Plaza II) which materially adversely
         affect Tenant's use of the Premises or the cost or scope of the Finish
         Work, other than changes required by Applicable Laws or as required
         during construction to adjust to field conditions. The work to be
         completed by Landlord in accordance with the Landlord's Drawings as
         modified is hereinafter referred to as the "Base Building Work."
         Landlord shall complete the Base Building Work in a good and
         workmanlike manner in accordance with Applicable Laws and the
         Declaration.

          1.2 Tenant shall retain either Burns and Associates or another
          architect reasonably approved by Landlord as Tenant's architect
          ("Tenant's Architect") and either Shapiro/O'Brien and Associates or
          KTA Associates as Tenant's engineer, or a substitute reasonably
          approved by Landlord which approval shall not be unreasonably
          withheld, conditioned or delayed ( "Tenant's Engineers"); Landlord
          reserves the right
<PAGE>

         to elect to retain separate engineers ("Landlord's Engineers" to
         provide a separate review on behalf of Landlord of plans prepared by
         Tenant's Architect and Tenant's Engineers. Tenant shall provide to
         Landlord the Tenant-approved space plans for the Premises (collectively
         referred to herein as "Space Plans") prepared by Tenant's Architect by
         August 15, 1999; Tenant shall also have Tenant's Engineers review the
         Space Plans on Tenant's behalf for conformity to the design
         specifications for the base building structure and systems. The Space
         Plans shall contain information specified in Exhibit 1 and shall be
         sufficiently complete to permit Landlord and Landlord's Engineers to
         review such drawings for the purpose of conforming the Space Plans with
         the base building specifications for the Building and for the purposes
         described in Section 1.3 below. The Space Plans shall be prepared by
         Tenant's Architect at Tenant's sole cost and expense, subject to
         Landlord's payment of the Allowance as hereinafter provided.

         1.3 Within 5 business days after receipt by Landlord of the Space
         Plans, Landlord shall review the Space Plans and confer with Tenant
         concerning such review. Tenant's Engineers, and Landlord's Engineers,
         if applicable, shall advise Landlord and Tenant whether the base
         building structure and systems will have to be supplemented or modified
         in order to allow installation of work shown on the Space Plans. If
         Landlord or the such engineers reasonably determine that the Space
         Plans (i) are inconsistent with the base building specifications for
         the Building; (ii) do not contain all of the information specified in
         Exhibit 1 or are not sufficiently complete to permit Landlord to review
         them for the purposes set forth therein; or (iii) indicate space usages
         inconsistent with the Lease, Landlord shall notify Tenant in writing of
         Landlord's determination setting forth the specific reasons therefor.
         Thereafter, Tenant shall revise the Space Plans accordingly within 5
         business days of being informed of such determination and resubmit them
         to Landlord and the review procedure and time frames set forth above
         shall be repeated. Any delay by Landlord in responding within the
         applicable periods or delays arising from errors by Landlord or its
         engineers in such review process shall be deemed "Landlord Delay" to
         the extent that such delay results in delaying approval of the Approved
         Space Plans beyond the 15th day following receipt by Landlord of the
         initial Space Plans; except for such delay, approval of Approved Space
         Plans shall not delay the Commencement Date under Section 2.5 below.
         Tenant shall pay all reasonable costs and expenses incurred by Landlord
         in connection with review and approval of the Space Plans by Landlord's
         Engineers, which amounts shall be paid from the Allowance. When
         approved by Landlord and Tenant, the Space Plans shall be acknowledged
         as such by Landlord and Tenant signing each sheet therefor and such
         approved drawings shall be deemed the "Approved Space Plans."

         1.4 On or before September 15, 1999, Tenant shall provide Landlord with
         architectural working drawings prepared by Tenant's Architect (the
         "Architectural Working Drawings") and structural, plumbing, fire
         protection, mechanical controls, electrical and life safety engineering
         drawings prepared by Tenant's Engineers ("Engineering Working
         Drawings") for the Premises approved by Tenant for review by Landlord
         substantially in the form provided in Exhibit 1. The Architectural
         Working Drawings shall be coordinated by Tenant's Architect with the
         Engineering Working Drawings prepared by Tenant's Engineers pursuant to
         Paragraph 1.3 above. The Architectural Working Drawings and the
         Engineering Working Drawings shall be a logical extension of the
         Approved Space Plans. Tenant's Architect shall be responsible for any
         conflicts between the Architectural Working Drawings and field
         conditions (unless such field conditions materially vary from
         Landlord's Drawings, as modified). Tenant shall be responsible for the
         consistency between the Architectural Working Drawings and the
         Engineering Working Drawings, conflicts with the base building drawings
         and field conditions and for the Architectural Working Drawings and the
         Engineering Working Drawings complying with building code provisions.
         Landlord shall notify Tenant's Architect of changes in Landlord's
         Drawings affecting the Finish Work as soon as reasonably practicable.
         Any problems caused by any inconsistency of the drawings shall be
         Tenant's sole responsibility (subject to Tenant or Tenant's Architect
         receiving Landlord's Drawings and changes in Landlord's Drawings).
         Landlord, Landlord's Architect and Landlord's Engineers, as applicable,
         shall review the Architectural Working Drawings and the Engineering
         Working Drawings within 10 business days after

                                        2
<PAGE>

         Landlord's receipt and give notice if they discover any conflicts with
         the base building drawings or field conditions or noncompliance with
         building codes within such period. If Landlord does not reply within
         such period, it shall be presumed that Landlord has no objection
         thereto, however, such approval shall not limit Landlord's right to
         request changes in the future in the event design errors are discovered
         later (which request shall be made as soon as practicable following
         such discovery). If Landlord notifies Tenant of such design errors,
         Tenant shall revise the Architectural Working Drawings and the
         Engineering Working Drawings accordingly and resubmit them to Landlord
         and the review procedure set forth above shall be repeated. Delay
         caused by such revisions shall be deemed Tenant Delay. When approved
         (or deemed approved) by Landlord and Tenant, such drawings shall be
         deemed the "Final Working Drawings."

         1.5 Changes to the Final Working Drawings, except for minor changes not
         affecting the Building mechanical, electrical or life safety systems or
         the structure of the Building, may be made only upon prior written
         approval of Landlord. Landlord shall respond (in writing or by oral
         communication thereafter confirmed in writing) to all written requests
         for changes within 7 business days of Landlord's receipt of the same.
         If Landlord does not respond within such period, Landlord shall be
         deemed to have consented to the requested changes. Any delay in
         completion of the Finish Work or the Base Building Work which results
         from any such changes or the process of approval or disapproval (other
         than caused by Landlord Delay) shall be deemed Tenant Delay. Landlord's
         review of the Space Plans, Architectural Working Drawings, Engineering
         Working Drawings or Final Working Drawings shall not imply approval by
         Landlord for their completeness, design sufficiency, or as to
         compliance with the requirements of applicable codes, rules, or
         regulations of any governmental agencies having jurisdiction thereof
         now in effect or which may hereafter be in effect.

         11. Finish Work and Finish Allowance

         2.1 Tenant agrees to execute contracts for design and construction
         services to complete the Finish Work (the "Contract") with contractors
         and subcontractors reasonably satisfactory to Landlord (collectively,
         "Tenant's Contractors"). Tenant and Tenant's Contractors will be
         required to adhere to the requirements set forth on Exhibit 2 and such
         other requirements as Landlord reasonably imposes (consistent with
         practices in other first class buildings in the northern Virginia area)
         for construction by all tenants in the Building and Plaza 11
         (collectively, "Requirements"). The Contract will incorporate the
         provisions of the Requirements. Prior to execution of the Contract,
         Tenant will provide a copy to Landlord. Landlord will review the
         Contract for compliance with the Requirements and advise Tenant of
         Landlord's approval or required changes within 10 business days of
         receipt; if Landlord fails to respond within such period, Landlord
         shall be deemed to approved such contract(s). Following such approval
         and the Delivery Date, Tenant will promptly commence and proceed
         diligently to complete the Finish Work.

          -1
          2.2 Tenant's Contractors and contractors employed by Landlord who are
          completing work in the Building ("Landlord's Contractors") shall be
          obligated to mutually cooperate and such Contractors will each conduct
          its respective work in an orderly fashion and manner so as not to
          unreasonably interfere with the other. Tenant's subcontractors with
          respect to all mechanical, electrical, and fire protection work in the
          Premises will be the subcontractors used by Landlord for such work in
          the Building, provided, however, if Tenant bids such subcontracts and
          the bids of Landlord's subcontractors are in excess of 5 % higher than
          the next highest bid, Landlord shall either not unreasonably withhold
          approval of such other subcontractor(s) or require Tenant to use
          Landlord's subcontractor(s) but pay to Tenant (as additional
          Allowance) the difference between such bids.

          2.3 Tenant assumes full responsibility for Tenant's Contractor's
          performance of all work including compliance with Applicable Laws, and
          for all Tenant's Contractors' property, equipment, materials, tools

                                        3
<PAGE>

         or machinery placed or stored in the Premises during the completion
         thereof (subject to the provisions regarding Builder's Risk insurance).
         All such work is to be performed in a good and workmanlike manner
         consistent with first class standards.

         2.4 Landlord shall notify Tenant in writing when Landlord's Contractor
         estimates that the Base Building Work is approximately 30 days from
         completion, which notification shall be made on a floor by floor basis.
         Landlord shall notify Tenant when Landlord has determined that all or
         any portion of the Base Building Work has been sufficiently completed
         that Tenant's Contractors may commence completion of the Finish Work in
         the Premises. Following receipt of such notice and prior to Tenant's
         Contractors commencing the Finish Work, the representatives of Landlord
         and Tenant shall jointly inspect the Premises with Landlord's Architect
         and develop a punchlist of items of Base Building Work for the Building
         Complex that have not been completed, distinguishing between those
         items which must be completed prior to Tenant having Tenant's
         Contractors commence work on the respective floor and those items that
         can be completed by Landlord's Contractor while Tenant's Contractors
         are completing Finish Work in the Premises; in the event of a dispute,
         Landlord's Architect and Tenant's Architect shall mutually resolve such
         dispute and if the Architects cannot agree upon a resolution, the
         Architects shall jointly appoint an independent architect whose
         determination shall be binding on the parties. The date on which a
         portion of the Premises is made available by Landlord to Tenant for
         completion of the Finish Work subject only to punchlist items that can
         be completed by Landlord's Contractor while Tenant's Contractors are
         completing Finish Work in the Premises, is referred to as the "Delivery
         Date" for such portion of the Premises; following the Delivery Date,
         Landlord shall complete the punchlist items with reasonable diligence.
         Following preparation of the punchlist, Tenant is responsible for
         repair of damage caused by Tenant's Contractors in the Building or
         Premises. Following the Delivery Date, Tenant is responsible for the
         diligent completion of all finish work substantially in accordance with
         the Final Drawings (the "Finish Work"), at its sole cost and expense,
         subject to Landlord's payment of the Allowance. Tenant's use and
         occupancy of the portion of the Premises following the Delivery Date
         for such portion is subject to all of the terms and provisions of the
         Lease (except for Tenant's obligation to pay Base Rent and utilities,
         which shall be governed by the provisions of Paragraph 2.5); any entry
         into the Building by Tenant or Tenant's contractors prior to Landlord's
         Contractors completing the Base Building Work shall be coordinated by
         Landlord's Contractor to minimize interference with completion of the
         Base Building Work. Tenant will cause Tenant's Contractors to: (i)
         conduct work so as not to unreasonably interfere with any other
         construction occurring in the Building or occurring with respect to the
         adjacent building known as Worldgate Plaza 11 (including punchlist
         items in the Premises); (ii) comply with the Requirements and all other
         rules and regulations relating to construction activities in the
         Building promulgated from time to time by Landlord for the Building;
         (iii) reach reasonable agreement with Landlord's Contractors as to the
         terms and conditions for hoisting, systems interfacing, and use of
         temporary utilities; and (iv) deliver to Landlord such evidence of
         compliance with the provisions of this paragraph as Landlord may
         reasonably request.

          2.5 The Commencement Date (for purposes of determining the
          commencement and expiration of the I 0-year Initial Term) shall occur
          on the earlier of (a) 90 days following the Delivery Date for the last
          floor of the Premises (or such later date on which Landlord has
          substantially completed the Base Building Work permitting a temporary
          certificate of occupancy or its equivalent to be issued to the extent
          necessary for Tenant to occupy the Premises under Applicable Laws,
          assuming that Tenant shall have completed such Finish Work as is
          required for the permit), or (b) the date upon which Tenant begins to
          occupy any portion of a total of 3 floors of the Premises for
          conducting its ordinary business therein (as distinguished from use
          for purposes of completing the Finish Work). Tenant's obligation to
          pay Base Rent and Operating Expenses and utilities shall commence on a
          floor by floor basis on the earlier of 90 days following the Delivery
          Date for such floor or the date that Tenant occupies any portion of
          such floor for the purposes of conducting its ordinary business
          therein; however, Tenant shall have the right to elect, by notice to
          Landlord prior to occupancy of such floor, to not occupy the entirety
          of any I floor of the Premises for

                                        4
<PAGE>

 up to 12 months following the Commencement Date (although Tenant shall complete
 with due diligence construction of the Finish Work in such space following the
 commencement of construction of the Finish Work for the Premises) and in that
 case Tenant's obligation to pay Base Rent and Operating Expenses shall not
 commence until 12 months following the Commencement Date; if Tenant commences
 using any portion of such space prior to the end of such 12 month period (other
 than for (i) storage of materials, (ii) installation of furniture, fixtures and
 equipment and (iii) limited use for ordinary business purposes by I or 2 people
 of a small portion of such space), Tenant's Base Rent and Operating Expense
 obligation shall commence for the entirety of such floor at such time. If the
 Commencement Date occurs on other than the first day of the month in accordance
 with the provisions of this Section of the Work Letter, then the commencement
 of the Initial Term will be delayed to the first day of the month following the
 Commencement Date but all provisions hereof, including Tenant's obligation to
 pay Rent at the monthly rate set forth in Section 1.4 for Month I (prorated for
 a partial month), will be in effect as of the Commencement Date; the 12-month
 period referred to above shall commence to run on the Commencement Date
 (without delaying the start of such period to the first of the following
 month). 2.6 Landlord will pay the cost of the Finish Work as substantially
 completed in accordance with the Final Drawings (including the cost of
 preparation of the Space Plan and Final Drawings and Landlord's review thereof)
 in the amount of $2,417,460.00 (the "Allowance"). Landlord shall make progress
 payments on a monthly basis as portions of the Finish Work is completed
 following request of Tenant in accordance with Section 2.7. Finish Work Costs
 in excess of the Finish Allowance ("Excess Costs") will be at Tenant's sole
 cost and expense and will be paid promptly by Tenant. If the total cost of the
 Finish Work exceeds $2,417,460.00, Landlord, at Tenant's written request,
 agrees to fund Excess Costs up to a maximum of $402,910.00 by amortizing such
 amount over the Initial Term with interest thereon at 10% per annum to be paid
 monthly as additional Rent in the same manner and place as monthly Base Rent
 (the "Additional Allowance").
          The Allowance is to be expended solely for the benefit of Landlord;
 that is, the Allowance will be expended only to pay for design, engineering,
 installation, and construction of the Finish Work which under the Lease becomes
 the property of Landlord upon installation and not for movable furniture,
 equipment, and trade fixtures not physically attached to the Premises;
 provided, however, Tenant shall have the right to use up to $402,910.00 of the
 Allowance for cabling and wiring costs, move related expenses and as a credit
 against next due Rent commencing with the Rent for the 13th full calendar month
 of the Initial Term. Not more than $ 221,601.00 of the Allowance shall be paid
 to Tenant's Architect and Tenant's Engineer for planning, architectural and
 engineering costs; Landlord agrees to disburse, prior to Tenant commencing
 construction of the Finish Work, up to $8,058.00 for preparation of the Space
 Plans and up to $40,291.00 for preparation of the Final Working Drawings (if
 Tenant's Architect or the Engineers require payment in excess of the such
 amounts, Tenant shall pay such excess when required to be paid and later
 receive reimbursement from the Allowance to the extent that the Allowance is
 not expended for other purposes as of the Commencement Date). Any of Landlord's
 costs and expenses payable to Landlord, required to be paid by Tenant under
 this Work Letter will also be paid out of the Allowance. Prior to Tenant
 commencing construction of the Finish Work, Tenant shall provide Landlord with
 notice of the total estimated cost of all Finish Work. Other than Landlord's
 prior reimbursement to Tenant for the actual cost for Space Plans and for
 preparation of the Final Working Drawings (as provided above), Landlord shall
 not be obligated to disburse any of the Allowance until Tenant shall have paid
 for, and provided evidence of completion and payment for, such portion of the
 Finish Work as reflects in total the amount of the estimated costs of the
 Finish Work in excess of the Allowance (plus the Additional Allowance if Tenant
 elects to have the Additional Allowance funded in accordance with Section 2.6
 above). As design, engineering, and construction work is completed and Tenant
 receives invoices therefor, Tenant will submit requests for payment to Landlord
 not more frequently than monthly, along with appropriate lien waivers
 (substantially in the forms attached hereto as Exhibit 3) and such other
 related [Worldgate I Form: 193277 3/5/991 401894_3 7/15/99 13258651 5
<PAGE>

         documentation as Landlord reasonably requires. On a monthly basis
         following receipt of such documentation (with such payment being made
         by the 30th of the month if all required documentation is received by
         Landlord by the 5th of such month), Landlord will pay the amounts
         requested by delivery to Tenant of Landlord's check(s) payable to
         Tenant or, at Landlord's option, payable to Tenant and Tenant's
         Contractors jointly. Unless otherwise agreed by Landlord and Tenant in
         writing and subject to delays beyond Tenant's reasonable control, if
         any portion of the costs to be reimbursed by the Allowance has not been
         requested by Tenant or will be requested for Finish Work that is
         ongoing as of November 1, 2000 such amounts shall be forfeited by
         Tenant.

         2.8 Landlord will, during completion of the Finish Work and immediately
         thereafter, reasonably cooperate in the balancing of the Building HVAC
         system serving the Premises. Landlord shall pay for costs of balancing
         the Base Building Work portions of the HVAC system and Tenant shall pay
         (from the Allowance) for balancing the portions of the system within
         the Premises.

         2.9 Subject to the mutual waiver in Section 18.6 of the Lease, Tenant
         will indemnify, defend and hold harmless Landlord, Building Manager,
         and Landlord's Contractors from and against liability, costs or
         expenses, including attorney's fees on account of damage to the person
         or property of any third party arising out of, or resulting from the
         performance of the Finish Work, including, but not limited to,
         mechanics' or other liens or claims (and all costs associated
         therewith), subject to Landlord's obligation to disburse the Allowance
         in accordance with the foregoing provisions. Tenant will also repair or
         cause to be repaired at its expense all damage caused to the Premises
         or the Building by Tenant's Contractors or its subcontractor, subject
         to the mutual waiver in Section 18.6 of the Lease and the provisions
         for Builder's Risk insurance provided in this Work Letter and Exhibits.
         Further, Landlord will have the right as described in Section 12.1 of
         the Lease to post and maintain notices of non-liability.

          2.10 Tenant agrees to submit to Landlord upon completion of all work
          one reverse mylar sepia and two blueprint copies of the as built
          drawings (the Final Drawings showing all changes thereon).

         2.11 Notwithstanding any provision herein or in the Lease to the
         contrary, the Commencement Date and Tenant's Rent obligations and other
         obligations will not be delayed or extended by any delay in completion
         of the Finish Work unless such delay is caused by "Net Landlord Delay"
         or unless caused by a casualty occurring after the Delivery Date that
         is covered by the Builder's Risk insurance carried by Landlord. The
         term "Landlord Delay" means any delay in the preparation, finalization
         or approval of the Approved Space Plans (to the extent provided in
         Section 1.3), Final Working Drawings or completion of the Finish Work
         caused by Landlord's failure to perform its obligations under this Work
         Letter within the time limits set forth herein or as a result of
         interference caused by Landlord or Landlord's Contractor (to the extent
         not permitted herein); Tenant shall provide notice to Landlord as soon
         as Tenant determines that Landlord Delay has occurred. All delays other
         than Landlord Delay are deemed "Tenant Delay." "Net Landlord Delay"
         means the number of days, if any, by which Landlord Delay exceeds
         Tenant Delay and the Commencement Date will be delayed by a number of
         days equal to the number of days of Net Landlord Delay, if any.

          2.12 Tenant designates and authorizes Joanne DiGuido to act for Tenant
          in this Work Letter. Tenant has the right by written notice to
          Landlord to change its designated representative.

          2.13 Landlord designates and authorizes George Chelwick to act for
          Landlord in this Work Letter. Landlord has the right by written notice
          to Tenant to change its designated representative.

                                        6
<PAGE>

 2.14 All notices required hereunder will be in writing in accordance with
 Section 28 of the Lease. Whenever Tenant's or Landlord's approval or consent is
 required under the express terms of this Work Letter, such approval or consent
 shall not be unreasonably withheld, conditioned or delayed.

 2.15 Landlord shall obtain Builder's Risk insurance on the Base Building Work
 and, if available in a form reasonably acceptable to Landlord, on the Finish
 Work on a Builder's Risk Completed Value Form or other comparable coverage; if
 such coverage on the Finish Work is obtained by Landlord, Tenant shall pay (by
 deduction from the Allowance) the costs attributable to coverage for the Finish
 Work. Upon request of Tenant, Landlord shall confirm whether such coverage of
 the Finish Work is applicable prior to Tenant commencing construction of any
 portion of the Finish Work. Builder's Risk insurance if applicable to the
 Finish Work shall include naming the interest of Landlord, Landlord's
 Contractor and subcontractors, Tenant, Tenant's contractor and subcontractors,
 and Landlord's mortgage, as their respective interest may appear. Such
 Builder's Risk coverage shall be in addition to, and not substitution for, the
 insurance (other than Builder's Risk) required under Exhibit 2 to be carried by
 Tenant, Tenant's Architect, Engineers and contractors with respect to the
 Finish Work.

   Very truly yours,

   WGP ASSOCIATES, LLC, a Virginia limited liability company
   By:-                 -PW-a
                       Authorized Signatory

                            "Landlord"
99 [3258651

                                        7
<PAGE>

 ACCEPTED AND APP
                           APPROVED this/A.,
 of      It A,           197~.
        V
 ONEPOINT LMMUNICATIONS CORP., a Delaware
 corporation

 By:
                                 7~
 Print Name:           -7~
 Print Title:
 ATTEST:
 By:-
 Print Name: /x/ Print Title:
 "Tenant"
 Exhibit I
 Exhibit 2
 Exhibit 3
 Exhibit 4
 [Worldgate I Form: 193277 3/5/991
 401894_37/15/99 13258651
 LIST OF EXHIBITS

          Space Plan and Drawings Requirements Landlord's Requirements of
     'tenant the Contractors Form of Lien Waivers Landlord's Drawings 8
<PAGE>

                            EXHIBIT 1 TO WORK LETTER

              SPACE PLANS AND ARCHITECTURAL DRAWINGS REQUIREMENTS

          1.
          Space Plans

                  Tenant's Space Plans will comply with the following
                  requirements which are intended to assist Tenant and Tenant's
                  Architect in defining all information required for Landlord's
                  review of the space usages and evaluation of the improvements
                  contemplated thereby.

          I. All Space Plans will be drawn to 1/8" scale and may be produced on
     CAD equipment.

          2. Tenant will submit one reverse mylar sepia and two blue prints of
     all Space Plans with notes describing the general intent of the usage and
     the improvement requirements.

          3. The Space Plans and notes will include: (a) partition layout and
     door locations; (b) depiction of electrical and communication equipment
     requirements other than for normal office equipment, including
     modifications required to floor or main telephone or electric closets; (c)
     reflected ceiling plan showing non-standard lighting and ceiling
     construction or constraints which will affect mechanical, electrical, fire
     protection or life safety systems; (d) Tenant's special mechanical and
     plumbing requirements; (e) Tenant's special floor loading requirements; (f)
     Tenant's requirements for floor penetrations, including but not limited to
     special stairs, dumbwaiters, conveyors, pneumatic systems, elevators or
     architectural features; and (g) approximate information regarding
     anticipated structural and mechanical, electrical, fire protection,
     controls and life safety system design requirements.

          11.      Architectural
          Drawings

                  Tenant's submission of Architectural Drawings (construction
                  documents inclusive of one reverse mylar and two blueprints of
                  Architectural Drawings and Specifications) to Landlord will
                  comply with the following requirements which are intended to
                  assist Tenant and Tenant's Architect in defining all
                  information required by Landlord to complete Landlord's review
                  of space usages and the quality and extent of the proposed
                  construction and its effect upon the building and building
                  systems.

                  Tenant, upon receipt of the Approved Space Plan from Landlord,
                  will coordinate them with the Architectural Drawings prepared
                  by Tenant's Architect, it being understood that the
                  Architectural Drawings will be consistent with and a logical
                  extension of the Approved Space Plans. Tenant is responsible
                  for consistency between the Architectural Drawings and the
                  Approved Space Plans.

                  The Architectural Drawings will depict the quality of the work
                  to be performed (the "Finish Work") and must provide for a
                  quality level equal to (as reasonably determined by Landlord)
                  or exceeding the requirements of the base building core and
                  shell construction contract documentation.

                  The Architectural Drawings will include but not be limited to:
                  (a) partition layout and door locations; (b) electrical
                  outlets, including the location and usage; (c) telephone
                  outlets, including description of system, size of conduit
                  servicing each outlet, power and mechanical requirements for
                  system and any requirements affecting base building
                  construction, including modifications required to floor or
                  main telephone rooms; (d) reflected ceiling plan showing
                  standard and non-
<PAGE>

 standard lighting, switching requirements and ceiling construction or
 constraints which will affect mechanical, electrical, fire protection or life
 safety systems, and will include all necessary specifications and details of
 items or construction; (e) Tenant's occupancy capacity, usage equipment loads
 for all spaces, particularly special usage rooms, including but not limited to
 conference rooms, lounges, coffee rooms, copy rooms, computer terminal or
 keypunch rooms, audio-visual rooms and reproduction or print rooms which
 require special heating, ventilating, air conditioning or fire protection (all
 specifications on usage or equipment therein, including BTU per hour output of
 all equipment and parameters as to extent of special work required); (f)
 Tenant's floor loading for all spaces (all specifications, weight, vibration
 and vibration isolation for each item sufficiently complete for structural
 engineering design), particularly special usage rooms, including, but not
 limited to file rooms, storage rooms, computer rooms and reproduction or print
 rooms; (g) floor penetrations, including but not limited to special stairs,
 dumbwaiters, conveyors, pneumatic systems, elevators or architectural features;
 and (h) all structural, mechanical, electrical, fire protection, controls and
 life safety systems requirements.

 The Architectural Drawings will include the following as well: (1) all millwork
 and equipment which will be part of the Finish Work and become part of the
 Premises; (2) a complete finish schedule for all floors, walls, ceilings,
 including millwork, door frames, etc.; (3) keying schedules; (4) special
 blocking requirements as may be required to support wall or ceiling hung
 furniture or equipment; and (5) all other information necessary to complete
 construction of the Premises, including the architect's stamp if required by
 the Building Department.

                                        2
<PAGE>

                            EXHIBIT 2 TO WORK LETTER

                     LANDLORD REQUIREMENTS OF THE CONTRACT

         The Contract will be subject to review and approval of Landlord in
         accordance with the Work Letter and will fully incorporate the
         following provisions. In the event of any conflict between any
         provisions of the Contract and the provisions below, the provisions
         below will control.

          I The Contract will be in writing and will cover all aspects of the
     Finish Work. No Finish Work will be performed except pursuant to the
     Contract. Fully executed copies of the Contract will be delivered to
     Landlord. If Landlord determines that the Contract does not comply with the
     provisions hereof, it will immediately be corrected and no work will be
     commenced in the Premises until the deficiencies have been corrected. Any
     delays in completion resulting from modifications (except as required by
     Landlord Delay) will be Tenant Delays. Following delivery of a copy of the
     Contract to Landlord and its approval (or deemed approval), no material
     modification will be effective unless and until a copy thereof has been
     delivered to Landlord for its review.

         2.      Changes in the Final Drawings will be made only upon prior
                 written approval (or deemed approval) of Landlord (to the
                 extent required under and in accordance with Section 1.5 of the
                 Work Letter).

          3.     Scheduling of Finish Work: The Contract will obligate Tenant's
                 Contractor to perform Finish Work in accordance with time
                 schedules acceptable to Tenant, Tenant's Contractor and
                 Landlord (which approval shall be based on consistency with
                 Landlord's schedule for completion of the Base Building Work).
                 Any schedule proposed by Tenant's Contractor will be based upon
                 Tenant's Contractor applying its best efforts to the Finish
                 Work.

          4.     Tenant's Contractor will not knowingly perform Finish Work
                 inconsistent with the Final Working Drawings which will result
                 in a lesser quality installation or provide inferior
                 performance than that established by the base shell and core
                 drawings and specifications covering similar work items.
                 Landlord will have the right at any time during the performance
                 of Finish Work or thereafter to require replacement and
                 reconstruction at Tenant's Expense of Finish Work not
                 conforming to the standards and specifications in the Final
                 Drawings.

          5. Tenant and Tenant's Contractor will give all notices and comply
     with all laws, ordinances, rules, regulations and orders of any public
     authority relating to the performance of the Finish Work. If either party
     observes that any Finish Work is at variance with any applicable codes,
     ordinances, laws, rules and regulations (collectively, "Applicable Laws"),
     it will promptly notify the other party and Landlord in writing, and
     necessary changes will be made by Tenant. If Tenant's Contractor performs
     any Finish Work that it knows is contrary to Applicable Laws, and fails to
     deliver prior notice to Tenant and Landlord, Tenant's Contractor will
     assume full responsibility therefor and will bear all costs attributable to
     repair, replacement or correction. Tenant, Tenant's Contractor and its
     subcontractors will comply with Federal, State and local tax laws, social
     security acts, unemployment compensation acts and such other acts and laws
     as are applicable to the performance of Finish Work.

          6. All risk of loss to all property of Tenant, Tenant's Contractor and
     its subcontractors will be the sole responsibility of Tenant, Tenant's
     Contractor and its subcontractors, and Landlord will have no responsibility
     therefor, subject to Builder's Risk insurance on the Finish Work to the
     extent carried by Landlord in accordance with Section 2.16 of the Work
     Letter.
<PAGE>

         7.     The following insurance requirements will be complied with:

          a. Minimum Coverage - Prior to any Finish Work being commenced by
     Tenant's Contractor, it will obtain and maintain insurance with minimum
     coverage and limits to protect Tenant and Landlord from the claims
     hereafter set forth which may arise or result from Tenant's Contractor's
     performance of any Finish Work, whether such work is performed by Tenant's
     Contractor, its subcontractors, or by anyone for whose acts such parties
     may be liable as follows (subject to the provisions below, such limits may
     be provided by an appropriate "umbrella" policy):

          (1) Workmen's Compensation and occupational disease insurance at the
     statutory limits provided for by the State of Virginia;

          (2) Employer's liability insurance in an amount not less than $
     100,000 for all damages arising from each accident or occupational disease;

          3) Commercial general liability insurance covering:

          (i) Operations premises liability;

          (ii) Owner's and Contractor's protective liability;

          (iii) Completed operations;

          (iv) Product liability;

          M Contractual liability;

          (vi) Broad form property damage endorsement and property damage caused
     by conditions otherwise subject to exclusion for explosion, collapse or
     underground damage;

          (vii) Architect's and engineer's professional liability insurance (for
     Tenant's Architect and Tenant's Engineer)

                           (4)    Insurance
                           limits:

                                   Bodily Injury:

          $ 1,000,000 each occurrence; $ 1,000,000 aggregate completed
     operations products

                                   Property
                                   Damage

                                   $500,000 each occurrence; $500,000 aggregate
                                   operations; $500,000 aggregate protective;
                                   $500,000 aggregate completed operations
                                   products

                           (5)    Comprehensive automobile liability insurance
                                  covering all owned, hired or nonowned vehicles
                                  including the loading and unloading thereof
                                  with limits of no less than:

                                        2
<PAGE>

                                   Automobile
                                   Bodily Injury

                                   $500,000 each person; $1,000,000 each
                                   occurrence;

                                   Automobile Property
                                   Damage:

                                   $500,000 each
                                   person

                  b.     Unless Landlord retains Builder's Risk insurance on the
                         Finish Work in accordance with Section 2.16 of the Work
                         Letter, Tenant or Tenant's general contractor shall
                         carry Builder's Risk insurance covering the completed
                         value of the Finish Work which will afford coverage
                         against "all risks" for physical loss or damage.

          C. Cancellation - All such insurance will be carried with a company
     reasonably satisfactory to Landlord and Tenant and the liability policy
     will name Landlord and Tenant and their employees and agents as additional
     insured parties. Each policy will provide that it will not be canceled or
     altered except after 15 days prior written notice to Tenant and Landlord,
     and the certificate of insurance will so state.

                  d.     Policy Termination - Tenant's Contractor and each
                         subcontractor will maintain all insurance required
                         hereunder during the term of the Contract and for a
                         period ending one year after the date of completion of
                         all Finish Work done pursuant to the Contract to the
                         extent such insurance is written in a "claims made
                         basis."

e.   Policies - Prior to commencement of work by Tenant's Contractor, it will
     deliver one copy of the policies or certificates evidencing such insurance
     to Tenant and Landlord. Such policies must be approved by Tenant and
     Landlord prior to commencement of work. Notwithstanding the above, Landlord
     may require greater coverage or larger limits by serving notice upon
     Tenant. Without the written consent of Landlord, Tenant's Contractor agrees
     that it will not allow any subcontractor to commence work within the
     building until such subcontractor has obtained the required insurance.

f.   Umbrella Liability ~ Insurance - Umbrella liability insurance with limits
     of liability for claims of bodily injury, personal injury and property
     damage liability not less than $10,000,000 each occurrence and $10,000,000
     aggregate.

                  g.      Waiver of Subrogation - Landlord, Tenant and Tenant's
                          Contractor will waive all rights against each other,
                          and their respective contractors, subcontractors and
                          sub-subcontractors, agents and employees, for damages
                          caused by fire or other perils covered under the
                          Builder's Risk insurance policy on the Finish Work.

9.   Tenant's Contractor will indemnify, defend, and hold harmless Tenant and
     Landlord and their respective representatives, agents and employees from
     and against all claims, damages, losses and expenses, including, but not
     limited to reasonable attorney's fees, arising out of or resulting from the
     performance of Finish Work or Tenant's Contractor's failure to perform in
     accordance with the Contract (but specifically excluding the Finish Work
     itself and the Building) which are: a) caused in whole or in part by any
     negligent act or omission of Tenant's Contractor, any subcontractor, anyone
     directly or indirectly employed by any of them or anyone for whose acts any
     of them may be liable, regardless of whether or not such claim, loss,
     damage or expense is caused in part by a

                                        3
<PAGE>

party indemnified hereunder, and b) attributable to bodily injury, sickness,
     disease or death, or destruction of or damage to tangible property
     including loss of use resulting from any of the foregoing acts.

Tenant's indemnification obligation under this Paragraph 9 will not be limited
     by any limitation on the amount or type of damages, compensation or
     benefits payable by or for the Contractor or any subcontractor under
     workmen's compensation acts, disability benefit acts or other employee
     benefit acts.

10.  Tenant's Contractor and Tenant will agree that while Landlord may make
     available to Tenant's Contractor for incorporation into the Finish Work
     materials previously purchased by Landlord, Landlord is not the
     manufacturer of such materials nor is it the commercial supplier of such
     materials. Accordingly, Tenant and Tenant's Contractor will agree that if
     either one or both of them have any claim with respect to any of such
     materials supplied by Landlord for incorporation into the Finish Work,
     whether such claims relate to any alleged breach of an express warranty or
     an implied warranty or otherwise, any claims against Landlord whether
     directly or by way of defense, counterclaim, cross claim or offset are
     waived and released and such claims will be brought exclusively against the
     person or entity from whom Landlord purchased such materials or against the
     manufacturer. Landlord will execute such documents as may be reasonably
     necessary to assign any rights Landlord would otherwise have against a
     supplier or manufacturer.

          11.    Landlord or Tenant may require Tenant's Contractor to provide
                 payment and performance bonds for any or all Finish Work, such
                 bonds to be provided at Tenant's expense (subject to
                 reimbursement under the Allowance). Any bond will be requested
                 and provided prior to commencement of Finish Work.

12.  If Tenant's Contractor is adjudicated a bankrupt, or makes a general
     assignment for the benefit of its creditors, or if a receiver is appointed
     on account of Tenant's Contractor's insolvency, or if Tenant's Contractor
     persistently or repeatedly refuses or fails, except in cases where delay is
     justified, to supply enough properly skilled workmen or proper materials or
     if Tenant's Contractor persistently disregards Applicable Laws, or
     otherwise is guilty of a substantial violation of a provision of the
     Contract, Tenant may, without prejudice to any right or remedy and after
     giving Tenant's Contractor and its surety, if any, 7 business days' written
     notice, terminate the Contract and take possession of all materials,
     equipment, tools, construction equipment and machinery owned by Tenant's
     Contractor and will thereafter complete the Finish Work by whatever method
     it may deem expedient. In such case, Tenant's Contractor will not be
     entitled to receive any further payments until completion of all Finish
     Work; provided, however, that Tenant's actions will not release Tenant's
     Contractor from any obligations to Tenant arising from its performance or
     nonperformance prior to the date of such termination. Following completion,
     Tenant will pay Tenant's Contractor an amount equal to the aggregate of the
     amounts actually due under the Contract at the time of the termination,
     less the cost to Tenant of completing the Finish Work.

13.  Prior to commencement of any Finish Work in the Premises, Tenant's
     Contractor will give written notice to Landlord and Tenant of the date work
     will commence. If a subcontractor or materialman files a mechanics' lien as
     a result of performing Finish Work pursuant to the Contract, then, provided
     Tenant's Contractor has been paid for such work, Tenant's Contractor will
     indemnify and defend Tenant and Landlord from said lien and will, when
     requested by Tenant or Landlord, furnish (as Landlord or Tenant may
     specify) either a bond sufficient to discharge the lien, deposit in an
     escrow approved by Landlord and Tenant a sum equal to 150% of the amount of
     such lien or obtain for Landlord an endorsement through Landlord's title
     policy insuring against loss or damage

                                        4
<PAGE>

                resulting from such lien. Subject to any restrictions of
                Landlord's Mortgagee on the Building, Tenant's Contractor may,
                in cooperation with Landlord and Tenant, contest the validity of
                a mechanics' lien, including the right to prosecute any appeals
                so long as during the pendency of any contest, Tenant's
                Contractor will effectively stay any official or judicial sale
                of the Building, upon execution or otherwise, and so long as
                Tenant's Contractor immediately pays any final judgment entered
                and procures record satisfaction thereof. If Tenant or Landlord
                is a party to any such contest, or any other action resulting
                from or arising out of the performance of the Finish Work,
                Tenant's Contractor will pay all legal fees and other costs and
                expenses incurred by Landlord and Tenant in such action. If
                Tenant's Contractor fails to provide a bond, cash escrow or
                title endorsement, or otherwise fails to fully satisfy and
                obtain the release of a lien in accordance with the provisions
                hereof, Tenant's Contractor will be obligated to refund Tenant
                or Landlord, as the case may be, all monies that the latter may
                pay in discharging any such lien including costs and reasonable
                attorneys' fees incurred in settling, defending against,
                appealing or in any other manner dealing with any such lien.

14.  Tenant's Contractor will warrant and agree at its expense to correct or
     cause to be corrected any defects in the Finish Work (including, but not
     limited to, defects due to defective workmanship or materials whether
     supplied, installed or performed by Tenant's Contractor or any
     subcontractor or supplier) which occur within one year after Tenant's
     Contractor has substantially completed the Finish Work, including
     completion of all punchlist items, or for such longer period as may be set
     forth in the Final Drawings. Tenant's Contractor will require a similar
     warranty in all subcontracts, and will deliver to Landlord and Tenant,
     together with appropriate assignments, if required, all warranties of
     subcontractors and suppliers. All warranties will extend to both Landlord
     and Tenant, as their respective interests in such Finish Work exist
     pursuant to the Lease.

          15.    Tenant's Contractor will: (a) comply with all reasonable rules
                 relating to construction activities in the Building promulgated
                 by Landlord or Landlord's Contractor; (b) be responsible for
                 reaching agreement with Landlord as to the reasonable
                 conditions for use of the elevators, systems interfacing, use
                 of temporary utilities, access to the Premises and use of truck
                 docks and storage areas (without charge).

          16.    Landlord shall make available hoisting, systems interfacing,
                 and use of temporary utilities as is customary in construction
                 of similar buildings in the suburban Washington, D.C. area,
                 subject to Landlord's schedule for completion of the Base
                 Building Work.

          17.    Landlord and Landlord's Contractor may, from time to time,
                 inspect or perform work within the Premises. Such inspections
                 or work will not unreasonably conflict with Tenant's
                 Contractor's work. Landlord may suspend Tenant's Contractor's
                 work in the Premises if such work, in the reasonable opinion of
                 Landlord or of Landlord's Contractor, presents a danger to
                 life, safety, or property, or in an emergency situation.

18.  Tenant will give Landlord reasonable prior notice of all inspections,
     punchouts and other reviews during the course of construction so that
     Landlord may observe such events. Landlord will be likewise informed of all
     Building Department inspections and requirements for issuance of the
     Certificate of Occupancy for the Premises. Landlord's observation of any
     such events will, in no event be construed or interpreted as a review or
     approval by Landlord of any such work nor will it prevent Landlord, if it
     thereafter discovers any deficiency in such Work, from requiring
     correction. Tenant's Contractor will be solely responsible for obtaining a
     certificate of occupancy (or its equivalent) for the Premises (as
     distinguished from a similar certificate to the extent required

                                        5
<PAGE>

        for the Base Building Work) and will submit to Landlord the original
        prior to Tenant's occupancy of the Premises for the purpose of
        conducting business.

 19.    Landlord's Engineer or other agent will have the option of reviewing all
        equipment and materials to be used in the construction of the Finish
        Work for consistency with Final Working Drawings and all work prior to
        Tenant move-in. Such review will in no event constitute approval by
        Landlord and Landlord shall use reasonable efforts to minimize any delay
        arising from such reviews.

 20.    Tenant will promptly furnish Landlord a copy of the building permit
        issued to Tenant's Contractor after issuance.

 21.     Tenant's Contractor will not store materials or supplies in or outside
         the Building (other than within the Premises) without the prior
         approval of Landlord or Landlord's Contractor.

22.  All deliveries except hand-held items must be taken to the floors via
     elevator(s) designated by Landlord for such purpose.

23.  Tenant's Contractor will provide at all times direct supervision of all
     work being performed for Tenant.

 24.     Tenant's Contractor will cooperate with Landlord in disposing refuse
         resulting from the Finish Work. This may include the use of Landlord's
         dumpster and a proration of charges associated with such use or at
         Landlord's option at Tenant's expense the placement of Tenant
         Contractor's dumpster at a location reasonably specified by Landlord.

 25.     Tenant's Contractor will acknowledge that the work to be performed by
         it for Tenant is also for the direct benefit of Landlord. Landlord will
         have the right to pursue in its own name directly against Tenant's
         Contractor any rights or remedies including, without limitation, claims
         for damages granted to Tenant.

         If any legal action or arbitration proceeding is commenced to enforce
         the provisions of the Contract or to recover damages as a result of the
         alleged breach of the provisions thereof, the prevailing party will be
         entitled to recover all reasonable costs incurred in connection
         therewith, including attorneys' fees.

         The Contract will be construed in accordance with the laws of the State
         of Virginia Subject to Paragraph 26, any litigation or other proceeding
         will be decided by the applicable court in the State of Virginia.

  26.    All claims, disputes and other matters in question between Tenant and
         Tenant's Contractor arising out of, or relating to, the Contract, will
         be decided by arbitration in accordance with the Construction Industry
         Arbitration Rules of the American Arbitration Association then
         obtaining unless the parties mutually agree otherwise. No such
         arbitration will include Landlord, its employees or consultants, except
         by written consent of Landlord and any other party sought to be joined.

                                        6
<PAGE>

                            EXHIBIT 3 TO WORK LETTER

                              FORM OF LIEN WAIVERS

   Appropriate lien waivers substantially in the forms attached hereto (with
   blanks completed and notary revised as appropriate) as Exhibits 3-1, 3-2,
   3-3, and 3-4, as the case may be, will accompany all requests for payment by
   Tenant.
 [Worldgate I Form: 193277 3/5/991
 40189437/15/99 [3258651
<PAGE>

                           EXHIBIT 3-1 TO WORK LETTER

 STATE OF VIRGINIA)                          INTERIM CONTRACTOR'S AFFIDAVIT
                                      ss.             RELEASE AND LIEN WAIVER
 COUNTY OF

 TO WHOM IT MAY CONCERN:

  The undersigned, being first duly sworn, deposes and says that:

          1. He is of the who is the general Contractor for the project
     hereinafter identified (the "Contractor"), and that the undersigned is
     authorized to execute and deliver this document on behalf of the
     Contractor.

          2. The Contractor is the contractor for the performance of certain
     work and/or the furnishing of certain materials or supplies (the "Work")
     pursuant to a Contract between Contractor and as Owner, for the
     improvements and project commonly known as (the "Project") upon property
     legally described as: I County of State of hereinafter referred to as the
     "Property."

                  3. This instrument is executed and delivered in consideration
          of and for the purpose of inducing("Construction Lender") and the
          Owner to make an interim payment of $ under the Contract, subject to
          collection of any check given as payment. The total amount of the
          Contract including change orders is $ and the undersigned acknowledges
          that upon receipt of this interim payment, the Contractor has received
          interim payments totaling $ under the Contract.

                  4. The undersigned for the Contractor, subject to the receipt
          and collection of the interim payment herein requested, warrants and
          represents that: (i) all materials delivered to said project by or for
          the Contractor are for use therein only; (ii) title to all work,
          materials and equipment covered by said payment, whether or not
          incorporated in the improvement on the Property, has passed to the
          Owner, free and clear of all liens, claims, security or encumbrances
          (hereinafter all referred to as "liens"); (iii) all taxes applicable
          to the materials furnished for use in or on the Property and all taxes
          for the Work performed under the Contract have been fully paid; and
          (iv) all laborers, mechanics, subcontractors, materialmen and
          suppliers for all work done and for all materials, machinery,
          equipment, fixtures, tools, scaffolding and appliances- furnished for
          the performance of the Contract and for any other indebtedness
          connected therewith for which the Owner of the Property might be
          responsible have been paid in full to the date hereof. Contractor, to
          the extent of the total of interim payments received, for itself, its
          successors, and on behalf of all persons able to claim through or
          under the Contractor: (a) waives, relinquishes and releases all liens
          and rights of claims to liens for labor or materials furnished in the
          construction, improvement, alteration or repair involved in
          performance under the Contract; (b) agrees (1) to save Owner and
          Construction Lender harmless from all liability, costs and expenses,
          including reasonable attorneys' fees, resulting from mechanic's and/or
          materialmen's liens for the performance of work or the furnishing of
          materials or supplies pursuant to the Contract, (2) to discharge (by
          bond or otherwise) or to defend suit to enforce any mechanic's or
          materialmen's lien, claim to or right of action for any such lien
          which may be filed, and (3) to satisfy any claims or demands which
          arise out of, which are due to or which may be made for, any work
          performed or supplies furnished under the Contract or in furtherance
          of the construction or completion of the Contract, whether directly or
          indirectly attributable to the Contract; and (c) hereby releases the
          present and any future Owner of the Property, the Property, the
          Construction
<PAGE>

 Lender and any tender who may now or hereafter have a security interest in the
 Property, from all claims, rights of action, liabilities and liens which may be
 filed or asserted in connection with the Contract.

  Dated this         day of                       , 19-.

                       Authorized representative of Contractor

  SUBSCRIBED AND SWORN TO before me this
day of                            19-.

  My commission expires

                                                      Notary Public

                                        2
<PAGE>

                           EXHIBIT 3-2 TO WORK LETTER

 STATE OF VIRGINIA)
                                                FINAL CONTRACTOR'S AFFIDAVIT,
 COUNTY OF                                           RELEASE AND LIEN WAIVER

 TO WHOM IT MAY CONCERN:

          The undersigned, being first duly sworn, deposes and says that:

          I . He is of the who is the general Contractor for the project
     hereinafter identified (the "Contractor"), and that the undersigned is
     authorized to execute and deliver this document on behalf of the
     Contractor.

          2. The Contractor is the contractor for the performance of certain
     work and/or the furnishing of certain materials or supplies (the "Work")
     pursuant to a Contract between Contractor and as Owner, for the
     improvements and project commonly known as (the "Project") upon property
     legally described as: County of State of hereinafter referred to as the
     "Property."

          3. This instrument is executed and delivered in consideration of and
     for the purpose of inducing ("Construction Lender") and the Owner to make
     final payment of $ under the Contract, subject to collection of any check
     given as payment. The total amount of the Contract including change orders
     is $ . and the undersigned acknowledges that upon receipt of this final
     payment, the Contractor has been paid in full the total contract price
     under the Contract.

                   4. The undersigned for the Contractor, subject to the receipt
          and collection of the final payment herein requested, warrants and
          represents that: (i) all materials delivered to said project by or for
          the Contractor are for use therein only; (ii) title to all work,
          materials and equipment covered by said payment, whether or not
          incorporated in the improvement on the Property, has passed to the
          Owner, free and clear of all liens, claims, security or encumbrances
          (hereinafter all referred to as "liens"); (iii) all taxes applicable
          to the materials furnished for use in or on the Property and all taxes
          for the Work performed under the Contract have been fully paid; and
          (iv) all laborers, mechanics, subcontractors, materialmen and
          suppliers for all work done and for all materials, machinery,
          equipment, fixtures, tools, scaffolding and appliances- furnished for
          the performance of the Contract and for any other indebtedness
          connected therewith for which the Owner of the Property might be
          responsible have been paid in full. Contractor for itself, its
          successors, and on behalf of all persons able to claim through or
          under the Contractor: (a) waives, relinquishes and releases all liens
          and rights of claims to liens for labor or materials furnished in the
          construction, improvement, alteration or repair involved in
          performance under the Contract; (b) agrees (1) to save Owner and
          Construction Lender harmless from all liability, costs and expenses,
          including reasonable attorneys' fees, resulting from mechanic's and/or
          materialmen's liens for the performance of work or the furnishing of
          materials or supplies pursuant to the Contract, (2) to discharge (by
          bond or otherwise) or to defend suit to enforce any mechanic's or
          materialmen's lien, claim to or right of action for any such lien
          which may be filed, and (3) to satisfy any claims or demands which
          arise out of, which are due to or which may be made for, any work
          performed or supplies furnished under the Contract or in furtherance
          of the construction or completion of the Contract, whether directly or
          indirectly attributable to the Contract; and (c) hereby releases the
          present and any future Owner of the Property, the Property, the
          Construction Lender and any lender who may now or hereafter have a
          security interest in the Property,
<PAGE>

 from all claims, rights of action, liabilities and liens which may be filed or
 asserted in connection with the Contract.

          Dated thisday of    lg-.

           Authorized representative of Contractor

          SUBSCRIBED AND SWORN TO before me this
day of                            19-.

          My commission expires

                                                      Notary Public

                                        2
<PAGE>

                           EXHIBIT 3-3 TO WORK LETTER
 Project Job Address Job Number STATE OF COUNTY OF ) ss.
 INTERIM SUBCONTRACTOR'S OR
 MATERIAL SUPPLIER'S AFFIDAVIT,
 RELEASE AND LIEN WAIVER
          The undersigned subcontractor or material supplier (herein referred to
 as "Subcontractor"), being first duly sworn, deposes and says that: He is over
 the age of 21 years and resides at:
 (IF SUBCONTRACTOR IS AN INDIVEDUAL:)

          I . He is the Subcontractor referred to herein. (IF SUBCONTRACTOR IS A
     PARTNERSEIIP:)

          1. He is a general partner in a co-partnership composed of the
     undersigned and carrying on business at City of . Said co-partnership is
     the Subcontractor referred to herein. (IF SUBCONTRACTOR IS A CORPORATION:)

          I . He holds the title of . in a corporation organized under the laws
     of the State of carrying on business at ' City of State of which
     corporation is the Subcontractor referred to herein. The undersigned is
     authorized to execute this instrument on its behalf.

          2. Subcontractor is a subcontractor or material supplier for the
 performance of certain work and/or the furnishing of certain materials or
 supplies pursuant to an agreement or purchase order, as the case may be
 (hereinafter called the "Subcontract," which term will refer to the agreement
 or purchase order, as the case may be), under a general contract between
 (hereinafter called "Contractor"), and Owner"), for the improvements or project
 known as (hereinafter called the
              -, at
 ~ City of                 , County of                 .. State of
 (hereinafter called the "Property").

          3. This instrument is delivered in consideration of and for the
     purpose of inducing Contractor to make interim payment of $ under the
     Subcontract, subject to collection of any check given as payment.
     Subcontractor acknowledges that upon receipt of this interim payment,
     Subcontractor has received from Contractor interim payments totaling $_
     under the Subcontract.

          4. Subcontractor warrants and represents that: (i) all materials
     delivered to said project by or for Subcontractor are for use therein only;
     (ii) title to all work, material and equipment covered by said
<PAGE>

 payment, whether or not incorporated in the Property, has passed to the Owner,
 free and clear of all liens, claims, security interests or encumbrances
 (hereinafter all referred to as "liens"); (iii) all taxes applicable to the
 materials furnished and the work performed under the Subcontract have been
 fully paid; and (iv) all laborers, mechanics, sub-subcontractors, materialmen
 and suppliers for all work done and for all materials, machinery, equipment,
 fixtures, tools, scaffolding and appliances furnished for the performance of
 the Subcontract and for any other indebtedness connected therewith for which
 the Owner of the Property might be responsible have been paid in full to the
 date hereof. Subcontractor, to the extent of the total of interim payments
 received, for itself, its successors, and on behalf of all persons able to
 claim through or under Subcontractor: (a) waives, relinquishes and releases all
 liens and right or claim to a lien for labor or materials furnished in the
 construction improvement, alteration or repair involved in performance under
 the Subcontract; (b) agrees to save Contractor harmless from all liability,
 costs and expenses, including reasonable attorneys' fees, to: (1) discharge (by
 bond or otherwise) or to defend suit to enforce, any mechanics' or
 materialmen's lien, claim to or right of action for such lien, which may be
 filed and (2) satisfy any claims or demands arising out of, due or which may be
 made, directly or indirectly attributable to the Subcontract, any work
 performed or supplies furnished thereunder, or in furtherance of the
 construction or completion of the subcontract work; and (c) hereby releases
 Contractor, any money earned by Contractor, Contractor's sureties, the present
 and any future Owner, the Property and any lender who may now or hereafter have
 a security interest therein, from all claim, right of action, liability and
 lien which may be filed or asserted in connection with the Subcontract.

          Dated this          day of                        19-.

                       As Subcontractor, General Partner of
                       Subcontractor, or Authorized Officer of
                       Subcontractor, above described

  STATE OF
                                       ss.
  COUNTY OF

          Subscribed and sworn to before me this day of 19_, by known to me to
     be the above-named signatory, who personally appeared before me and
     acknowledged that the foregoing instrument was freely and voluntarily
     executed for the uses and purposes and on behalf of the Subcontractor
     therein mentioned.

          My commission expires

                                                        Notary Public in and
                                                         for said County and
                                                               State
 [Worldgate I Form: 193277 3/5/991 401894_3 7/15/99 [3258651

                                        2
<PAGE>

                           EXHIBIT 3-4 TO WORK LETTER

  Project                                   FINAL SUBCONTRACTOR'S OR
  Job Address                               MATERIAL SUPPLIER'S AFFIDAVIT,
  Job Number                                RELEASE AND LIEN WAIVER

   STATE OF
                          ss.
   COUNTY OF

                  The undersigned subcontractor or material supplier (herein
         referred to as "Subcontractor"), being first duly sworn, deposes and
         says that: He is over the age of 21 years and resides at:

          (IF SUBCONTRACTOR IS AN INDIVEDUAL:)
                   1.      He is the Subcontractor referred to
                   herein.

          (IF SUBCONTRACTOR IS A PARTNERSIHP:)
                   I . He is a general partner in a co-partnership composed of
          the undersigned and carrying on business at city of . Said
          co-partnership is the Subcontractor referred to herein.

          (IF SUBCONTRACTOR IS A CORPORATION:) I . He holds the title of in , a
     corporation organized under the laws of the State of carrying on business
     at , City of . State of which corporation is the Subcontractor referred to
     herein. The undersigned is authorized to execute this instrument on its
     behalf.

          2. Subcontractor is a subcontractor or material supplier for the
     performance of certain work and/or the furnishing of certain materials or
     supplies pursuant to an agreement or purchase order, as the case may be
     (hereinafter called the "Subcontract," which term will refer to the
     agreement or purchase order, as the case may be), under a general contract
     between (hereinafter called "Contractor"), and (hereinafter called the
     "Owner"), for the improvements or project known as at City of County of
     State of (hereinafter called ~e "Property").

          3. This instrument is delivered in consideration of and for the
     purpose of inducing Contractor to make final payment of $ , subject to
     collection of any check given as payment. Subcontractor acknowledges that
     upon receipt of this final payment, Subcontractor has been paid in full the
     total subcontract price of $ for all of the work performed under the
     Subcontract, including retainage, if any.
<PAGE>

          4. Subcontractor warrants and represents that: (i) all materials
 delivered to said project by or for Subcontractor are for use therein only;
 (ii) title to all work, material and equipment covered by said payment, whether
 or not incorporated in the Property, has passed to the Owner, free and clear of
 all liens, claims, security interests or encumbrances (hereinafter all referred
 to as "liens"); (iii) all taxes applicable to the materials furnished and the
 work performed under the Subcontract have been fully paid; and (iv) all
 laborers, mechanics, sub-subcontractors, materialmen and suppliers for all work
 done and for all materials, machinery, equipment, fixtures, tools, scaffolding
 and appliances furnished for the performance of the Subcontract and for any
 other indebtedness connected therewith for which the Owner of the Property
 might be responsible have been paid in full. Subcontractor for itself, its
 successors, and on behalf of all persons able to claim through or under
 Subcontractor: (a) waives, relinquishes and releases all liens and right or
 claim to a lien for labor or materials furnished in the construction
 improvement, alteration or repair involved in performance under the
 Subcontract; (b) agrees to save Contractor harmless from all liability, costs
 and expenses, including reasonable attorneys' fees, to: (1) discharge (by bond
 or otherwise) or to defend suit to enforce, any mechanics' or materialmen's
 lien, claim to or right of action for such lien, which may be filed and (2)
 satisfy any claims or demands arising out of, due or which may be made,
 directly or indirectly attributable to the Subcontract, any work performed or
 supplies furnished thereunder, or in furtherance of the construction or
 completion of the subcontract work; and (c) hereby releases Contractor, any
 money earned by Contractor, Contractor's sureties, the present and any future
 Owner, the Property and any lender who may now or hereafter have a security
 interest therein, from all claim, right of action, liability and lien which may
 be filed or asserted in connection with the Subcontract.

          Dated this          day of                         ~ 19-.

                                         As Subcontractor, General Partner of
                                        Subcontractor, or Authorized Officer of
                                               Subcontractor, above described

  STATE OF
                ss.
  COUNTY OF

          Subscribed and sworn to before me this day of 19_, by known to me to
     be the above-named signatory, who personally appeared before me and
     acknowledged that the foregoing instrument was freely and voluntarily
     executed for the uses and purposes and on behalf of the Subcontractor
     therein mentioned.

          My commission expires

                                              Notary Public in and for said
                                                      County and State
 I-Worldgate I Form: 193277 3/5/991 4018943 7/15/99 (3258651

                                        2
<PAGE>

                            EXHIBIT 4 TO WORK LETTER

                              LANDLORD'S DRAWINGS
<PAGE>

<TABLE>
<CAPTION>
                                       EXMIT 4 TO WORK LETTER
                                          LANDLORD'S DRAWINGS
 Revisions Dated 2/2/99
-----------------------------------------------------------------------------------------------------------------------
CPAL DRAWINGS
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
Dwg- No.          Title                                                                         Date
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
<S>                                                                                             <C>  <C>
I                 Cover Sheet                                                                   12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
2                 Existing Conditions and Demolition Plan                                       12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
3                 Site Plan                                                                     12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
4                 Sediment and Erosion Control Plan - Phase 1                                   12/1/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
5                 Sediment and Erosion Control Plan - Phase, 2                                  12JI/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
6                 Sediment and Erosion Control Notes and Details                                12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
7                 Sanitary Plan and Profile                                                     12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
8                 Profiles                                                                      12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
8A                Profiles                                                                      12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
9                 Storm Drain Computations                                                      12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
10                Landscape Plan                                                                12/l/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
11                Landscape Details and Notes                                                   12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
12                Fire Lane Marking Plan                                                        12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
13                Site Notes and Details                                                        12/l/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
14                Site Notes and Details                                                        12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
15 -              Garage Parking Plan                                                           12/1/98
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
16                Geotechnical Requirements                                                     CIQ
                                                                                                1116198
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
ARCEMCTURAL DRAWINGS
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
                  Cover Sheet                                                                   2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-00 I            Project Data and Drawing Index                                                2/2,/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-002             Door and Partition Types and Door Details                                     2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-003             Door Schedule                                                                 2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-004             Hardware Schedule                                                             2/2/99
-----------------------------------------------------------------------------------------------------------------------
</TABLE>
   406M 1MM
<PAGE>

<TABLE>
<CAPTION>

 10VCR ON XH/YLl VV:91 alll 66/ZZ/Lo
-----------------------------------------------------------------------------------------------------------------------
<S>                                                                                              <C> <C>
A-005              Finish Schedule                                                               2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-101              Architectural Site Plan                                                       2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-201              Parking Level One Plan                                                        2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-202              parking Level Two Plan                                                        2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-203              Parking Level Three Plan                                                      2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-204              Par-king Level Four Plan                                                      2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-205              Typical Floor Plan. First through Fourth West - Fast                          2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-206              P-4 Garage Level Reflected Ceiling Plan                                       2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-207              Penthouse and Roof Plan                                                       2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-208              Lobby Plans                                                                   2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-209              Interior Elevations                                                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-210              Interior Details                                                              2J2199
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-211              Typical Core and Stair Plans                                                  2/2-/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-212              Toilet Plans, Elevations and Details                                          2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-213              P-4 Garage Level Reflected Ceiling Plan                                       2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-301              Exterior Elevations                                                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-302              Exterior Elevations                                                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-303              Exterior Elevations                                                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-304              Exterior Elevations                                                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-305              Exterior Elevations                                                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-306              Building Section                                                              2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-401              Wall Sections                                                                 2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-402              Wall Sections (Roof/Penthouse)                                                2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-403              Exterior Details                                                              2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-404              Plan Details                                                                  2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-405              Plan Details                                                                  2/2/99
-----------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------
A-501              Partial Building Sections and Miscellaneous Details                           2/2/99
-----------------------------------------------------------------------------------------------------------------------
 406773 7/22M

</TABLE>
<PAGE>

<TABLE>
<CAPTION>

[GRAPHIC OMITTED][GRAPHIC OMITTED]
 10VC9 ON YH/XJl CV:9T f1HJ, 66/ZZ/LO
------------------ ----------------------------------------------------------------------------- ----------------------
A-502              Stair Section and Details                                                     12/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
-----------------------------------------------------------------------------------------------------------------------
STRUCTURAL DRAWINGS
-----------------------------------------------------------------------------------------------------------------------
------------------ ----------------------------------------------------------------------------- ----------------------
<S>                                                                                              <C> <C>
S-1                P I Garage Level Foundation Plan West                                         2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-2                P I Garage Level Foundation Plan East                                         2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-3                Garage Level P2 Framing Plan West                                             2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-4                Garage Level P2 Framing Plan Fast                                             2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-5                Garage level P3 Framing Plan West                                             2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-6                Garage Level P3 Framing Plan East                                             2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-7                Garage Level P4 Framing Plan West                                             2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-8                Garage Level P4 Framing Plan East                                             2/71/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-9                Typical Floor Framing Plan West                                               2/2,199
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-10               Typical Floor Framing Plan Fast                                               2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-11               Main Roof & Penthouse Floor Framing Plan West                                 7-/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-12               Main Roof & Penthouse Floor Framing Plan East                                 2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-13               Penthouse Roof Framing Plan                                                   2/Z/0-9-
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-14               Column Schedule West                                                          2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-15               Column Schedule Fast                                                          2/Z/00
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-16               Beam Schedule                                                                 2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-17               Structural Notes                                                              2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-18               Typical Details                                                               2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-19               Typical Details                                                               2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-20               Sections                                                                      2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
S-21               Sections                                                                      2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
-----------------------------------------------------------------------------------------------------------------------
MECHANICAL DRAWINGS
-----------------------------------------------------------------------------------------------------------------------
------------------ ----------------------------------------------------------------------------- ----------------------
M-1                Cover Sheet, Symbols, Abbreviations & Equipment Schedules                     2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
M-2                Garage Level 1                                                                2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
------------------ ----------------------------------------------------------------------------- ----------------------
M-3                Part Plan Garage Level 2 and 3                                                2/2/99
------------------ ----------------------------------------------------------------------------- ----------------------
                                                                              406773 IMM

</TABLE>
<PAGE>

<TABLE>
<CAPTION>

----------------- ------------------------------------------------------------------------------ ----------------------
<S>                            <C>                                                               <C> <C>
-4                Garage Level 4                                                                 2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-5               Typical Floor Plan I st-3rd (West)                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-6               Typical Floor Plan 1 st-3rd (Fast)                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-7               Fourth Floor Plan West                                                         2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-8               Fourth Floor Plan East                                                         2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-9               Penthouse Ductwork and Piping Plan                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-10              Typical Core Plan                                                              2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-1 I             Fourth Floor Core Plan                                                         2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-12              Riser and Flow Diagrams Mechanical                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M- 13             Details                                                                        2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
M-14              Details                                                                        2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
-----------------------------------------------------------------------------------------------------------------------
PLUMBING DRAWINGS
-----------------------------------------------------------------------------------------------------------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-1               Schedules, Symbols and Notes - Plumbing                                        2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-2               Parking Lv1 I West - Under Ground - Plumbing                                   2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-3               Parking LA I Fast - Under Ground - Plumbing                                    2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-4               Parking LA 1 West - Above Ground - Plumbing                                    2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-5               Parking Lv1 I East - Above Ground - Plumbing                                   2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-6               Parking . Lvl 2 Plan West - Plumbing                                           2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-7               Parking LA 2 Plan East- Plumbing                                               2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-8               Parking Lvl 3 Plan West - Plumbing                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-9               Parking Lvl 3 Plan East - Plumbing                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-10              Parking Lvl 4 Plan West - Plumbing                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-1 I             Parking Lvl 4 Plan East - Plumbing                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-12              Typical Floor (1 -3) Plan West - Plumbing                                      2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P- 13             Typical Floor (1-3) Plan East - Plumbing                                       2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P- 14             Fourth Floor Plan West - Plumbing                                              2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
----------------- ------------------------------------------------------------------------------ ----------------------
P-15              Fourth- Floor Plan East - Plumbing                                             2/2/99
----------------- ------------------------------------------------------------------------------ ----------------------
</TABLE>
<PAGE>

<TABLE>
<CAPTION>

 _10VV9 ON YN/Y11 CV:91 flHJL 66/ZZ/LO
------------------ ----------------------------------------------------------------------------- -----------------------
<S>                                                                                              <C> <C>
P- 16              Penthouse and Roof Plan West - Plumbing                                       2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-17               Penthouse and Roof Plan East - Plumbing                                       2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-18               Typical Core (1-3) Plan West - Plumbing                                       2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-19               Typical Core (1-3) Plan East - Plumbing                                       2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-20               Water Riser Diagram - Plumbing                                                2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-21               Sanitary Riser Diagram - Plumbing                                             2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-22               Storm Riser Diagram - Plumbing                                                2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-23               Fire Protection Riser Diagram                                                 2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
P-24               Details - Plumbing                                                            2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------------------------------------------------------------------------------------------------------------
ELECTRICAL DRAWINGS
------------------------------------------------------------------------------------------------------------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E- I               Symbols, Notes, Schedules, Details - Electrical                               2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-2                Site Plan - Electrical                                                        2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-3                P-2 Level West - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-4                P- I Level East -Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-5                P-2 Level West - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-6                P-2 Level East - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-7                P-3 Level West - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-8                P-3 Level Fast - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-9                P-4 Level West - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-10               P-4 Level East - Electrical                                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-1 1              Typical Floor (1', 2d, 3) West - Electrical                                   2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E- 12              Typical Floor (1', 2d5 3') Fast - Electrical                                  2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-13               Fourth Floor Plan West - Electrical                                           2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E- 14              Fourth Floor Plan East - Electrical                                           2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E-15               Penthouse - Plan West/East - Electrical                                       2/2/99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
E- 16              Typical Core Plan West/East - Electrical                                      2 2, 99
------------------ ----------------------------------------------------------------------------- -----------------------
------------------ ----------------------------------------------------------------------------- -----------------------
'E-17              Main Lobby Lighting - West/East - Electrical                                  V2J99
                   ----------------------------------------------------------------------------- -----------------------
      406M V22M
</TABLE>
<PAGE>

<TABLE>
<CAPTION>

 IOVCR ON YH/YLJ VV:ST IIHJ, 66/ZZ/LO
----------------- ------------------------------------------------------------------------------ ---------------------
<S>                                                                                              <C> <C>
E-18              Power Riser Diagram - Electrical                                               2/2/99
----------------- ------------------------------------------------------------------------------ ---------------------
----------------- ------------------------------------------------------------------------------ ---------------------
E-19              Switchboard Schedules - Electrical                                             2/2/99
----------------- ------------------------------------------------------------------------------ ---------------------
----------------- ------------------------------------------------------------------------------ ---------------------
E-20              Fire Alarm Riser Diagram - Electrical                                          2/2/99
----------------- ------------------------------------------------------------------------------ ---------------------
----------------- ------------------------------------------------------------------------------ ---------------------
E-21              Fire Alarm Riser Diagram - Electrical                                          2/2/99
----------------- ------------------------------------------------------------------------------ ---------------------
----------------- ------------------------------------------------------------------------------ ---------------------
E-22              Panel l3oard Schedules - Electrical                                            2/2/99
----------------- ------------------------------------------------------------------------------ ---------------------
----------------- ------------------------------------------------------------------------------ ---------------------
E-23              Panel Board Schedules - Electrical                                             2/2/99
----------------- ------------------------------------------------------------------------------ ---------------------
      406773 7n2M

</TABLE><PAGE>

                                  DEMAND NOTE

This Note has been executed by COMPLUS, L.P., a Delaware Limited Partnership
with its principal office located at 100 Newport Avenue Extension, Quincy, MA
02171 ("Borrower").

ON DEMAND, for value received, Borrower promises to pay to the order of ONEPOINT
COMMUNICATIONS CORP., a Delaware corporation ("Lender"), at its office at 2201
Waukegan Drive, Bannockburn, Illinois 60015, or at such other place as Lender
may direct, the principal sum of NINE HUNDRED THOUSAND AND NO/100 United States
Dollars ($900,000). Interest shall accrue on the outstanding principal amount of
this Note at a rate equal to 15% per annum and shall be payable at such time as
the principal of this Note becomes due and payable.

This Note shall bind Borrower, its successors and assigns, and shall inure to
the benefit of Lender, its successors and assigns, except that Borrower may not
transfer or assign any of its rights or interest hereunder without the prior
written consent of Lender.

Borrower agrees to pay upon demand all expenses (including without limitation
attorneys' fees, legal costs and expenses, in each case whether in or out of
court, in original or appellate proceedings or in bankruptcy) incurred or paid
by Lender in connection with the enforcement or preservation of its rights
hereunder.

The amounts due under this Note are secured by the Security Agreement of even
date herewith encumbering the accounts receivable of Borrower.

Except as otherwise expressly provided herein, Borrower expressly and
irrevocably waives notice of dishonor or default as well as presentment,
protest, demand and notice of any kind in connection herewith. In addition,
Borrower expressly agrees that this Note, or any payment hereunder, may be
extended from time to time and the holder hereof may accept security for this
Note, all without in any way affecting the liability of the Borrower hereunder.
This Note shall be governed by and construed in accordance with the internal law
of the State of Illinois, and shall be deemed to have been executed in the State
of Illinois.

COMPLUS, L.P.

By: AMI-VCOM2, Inc., its General Partner

     By: ____________________________

     Name Printed: __________________

     Title: _________________________

     Date: __________________________

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}]]