Document:

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                                                                   EXHIBIT 10.45

                                  DEED OF LEASE

         THIS DEED OF LEASE (this "Lease") is made this ____ day of August 1999,
by ENTERPRISE CENTER LIMITED PARTNERSHIP NUMBER TWO, a Virginia limited
partnership ("Landlord"), and CROSSWALK.COM, INC. a Delaware corporation
("Tenant").

         Landlord and Tenant, intending legally to be bound, hereby covenant and
agree as set forth below.

                                   ARTICLE 1
                             BASIC LEASE PROVISIONS

         The following terms, when used herein, shall have the meanings set
forth below.

         1.1 Premises. The Premises is deemed to be 10,585 square feet of
rentable area as outlined on Exhibit A attached hereto. The Premises are located
on the first floor of the Building and are known as Suite 110.

         1.2 Building. The building in which the Premises are located. The
Building has three (3) floors, contains 79,420 square feet of rentable area, and
includes all alterations, additions, improvements, restorations or replacements
now or hereafter made thereto. The address of the Building is 4100 Lafayette
Center, Enterprise Center in Lafayette Business Park, Chantilly, Virginia 22021.

         1.3 Term. If the Commencement Date is the first day of a month, the
Term shall be 61 full months. If the Term is not the first day of a calendar
month, the Term shall be 61 full months plus the time period from the
Commencement Date to the last day of the month in which the Commencement Date
falls.

         1.4 Commencement Date. November 1, 1999, subject to adjustment as set
forth in Article 4.

         1.5 Expiration Date. November 30, 2004, subject to adjustment as set
forth in Article 4.

         1.6 Base Rent. The Base Rent shall be as follows:

                                            MONTHLY BASE
    LEASE YEAR     ANNUAL BASE RENT             RENT
        1             $201,115.00            $16,759.58
        2             $207,148.45            $17,262.37
        3             $213,362.90            $17,780.24
        4             $219,763.79            $18,313.65
        5             $226,356.70            $18,863.06
6 (I.E., the 61ST     $233,147.41            $19,428.95
      MONTH)
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Notwithstanding the foregoing, one-half of Monthly Base Rent for the sixth and
twelfth full months of the Term shall be abated.

         1.7 Security Deposit. $100,000.00, subject to adjustment as set forth
in Article 6.

         1.8 Complex. That complex of buildings owned by Landlord known as
"Enterprise Center" containing one hundred eighty-nine thousand, one hundred
twenty (189,120) rentable square feet (of which the Building is a part), as
outlined on Exhibit E attached hereto, and including any easements, rights and
appurtenances thereto (including private streets, storm detention facilities and
any other service facilities).

         1.9 Lafayette Business Park. That Complex of buildings in Chantilly,
Virginia known by the same name, of which the Complex, Building and premises are
a part, and including any easements, rights and appurtenances thereto.

         1.10 Base Year for Operating Expenses. Calendar year 2000.

         1.11 Base Year for Real Estate Taxes. Calendar year 2000.

         1.12 Tenant's Proportionate Share of Operating Expenses. 13.33% of the
Operating Expenses allocable to the Building ("Tenant's Proportionate Share of
Building Operating Expenses"), and 5.60% of the Operating Expenses allocable to
the Complex ("Tenant's Proportionate Share of Complex Operating Expenses")
(collectively, "Tenant Proportionate Share of Operating Expenses).

         1.13 Tenant's Proportionate Share of Real Estate Taxes. 5.60%
("Tenant's Proportionate Share of Real Estate Taxes").

         1.14 Parking Space Allocation. 3.6 parking spaces per each 1,000
rentable square feet of the Premises, including any expansion space. The parking
spaces shall be unreserved, non-exclusive parking spaces in the Parking
Facilities.

         1.15 Permitted Use. General office use and for no other purpose.

         1.16 Broker(s).

              (a) Landlord's: Spaulding & Slye (Robert B. Shue and Harry Klaff).

              (b) Tenant's: The Irving Group (Casey Veatch).

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         1.17 Landlord's Address for Payment of Rent.

              Enterprise Center Limited .Partnership
              Number Two
              c/o ELV Associates, Inc. 3340 Peachtree
              Road, NE, Suite 2675
              Atlanta, GA 30326
              Attn: Ms. Theresa F. McLaughlin

         1.18 Landlord's Address for Notice Purposes.

              c/o ELV Associates, Inc.
              1076 Thomas Jefferson Street, N.W.
              Washington, DC 20007
              Attn: Ms. Theresa F. McLaughlin
              Telephone: (202) 625-6100

         1.19 Tenant's Address.

              Before occupancy:
              Crosswalk.com, Inc.
              4206F Technology Court
              Chantilly, Virginia  20151-1214
              Attention:  Mr. Gary Struzik

              After Occupancy:
              Crosswalk.com, Inc.
              4100 Lafayette Center, Suite 110
              Chantilly, Virginia  22021
              Attention:  Mr. Gary Struzik

                                   ARTICLE 2
                                   DEFINITIONS

     The following terms, when used herein, shall have the meanings set forth
below.

         2.1 Additional Rent. As defined in Article 5.3.

         2.2 Agents. Officers, partners, directors, employees, agents,
licensees, customers, invitees and affiliates.

         2.3 Alterations. Alterations, decorations, additions or improvements of
any kind or nature to the Premises or the Building, whether structural or
non-structural, interior, exterior or otherwise, including Cabling.

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         2.4 Association. The Lafayette Business Center Association, which is
governed by a Declaration of Covenants, Conditions and Restrictions dated
November 16, 1984 as recorded among the land records of Fairfax County, Virginia
in Deed Book 6057 at page 396, as amended from time to time (as amended, the
"Covenants").

         2.5 Cabling. All cabling and wiring installed by Tenant in the Building
at any time in connection with any telephone, computer, telecommunications or
other system.

         2.6 Common Area. All areas, improvements, facilities and equipment from
time to time designated by Landlord for the common use or benefit of Tenant,
other tenants of the Complex and their Agents, including roadways, entrances and
exits, landscaped areas, open areas, exterior lighting, service drives, loading
areas, pedestrian walkways, sidewalks, stairs, ramps, maintenance and utility
rooms and closets, exterior utility lines, common window areas, common trash
areas and Parking Facilities.

         2.7 Event of Default. As defined in Article 22.

         2.8  Guarantor.  None.

         2.9  Hazardous Materials.  As defined in Article 26.

         2.10 Herein, hereafter, hereunder and hereof. Under this Lease,
including all Exhibits.

         2.11 Holidays. As defined in the Rules and Regulations attached as
Exhibit D.

         2.12 Interest Rate. Fifteen percent (15%) per annum, but in no event
greater than the maximum rate permitted by law.

         2.13 Land. The piece or parcel of land upon which the Complex is
located and all rights, easements and appurtenances thereunto belonging or
pertaining.

         2.14 Lease Year. The first Lease Year shall commence on the
Commencement Date and terminate on the last day of the twelfth (12th) full
calendar month after the Commencement Date. Each subsequent Lease Year shall
commence on the date immediately following the last day of the preceding Lease
Year and shall continue for a period of twelve (12) full calendar months, except
that the last Lease Year of the Term shall terminate on the date this Lease
expires or is otherwise terminated.

         2.15 Legal Requirements. All laws, statutes, ordinances, orders, rules,
ordinances, regulations and requirements (including any and all energy
conservation requirements applicable to the Complex and customary industry
indoor air quality standards and practices) of all federal, state and municipal
governments, and the appropriate agencies, officers, departments, boards and
commissions thereof whether now or hereafter in force which relate or are
applicable to the Land, Premises, the Building or the Complex or any part
thereof.

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         2.16 Mortgage. Any mortgage, deed of trust, security interest or title
retention interest affecting the Building, the Land or the Complex.

         2.17 Mortgagee. The holder of any note or obligation secured by a
mortgage, deed of trust, security interest or title retention interest affecting
the Complex, the Building or the Land, including lessors under ground leases,
sale-leasebacks and lease-leasebacks.

         2.18 Operating Expenses.  As defined in Article 7.

         2.19 Parking Facilities. All parking areas now or hereafter made
available by Landlord for use by tenants, including open-air parking within the
Complex, whether reserved, exclusive, non-exclusive or otherwise.

         2.20 Real Estate Taxes.  As defined in Article 8.

         2.21 Rent.  Base Rent and Additional Rent.

         2.22 Substantial Completion. As defined in the Work Agreement attached
hereto and made a part hereof as Exhibit B.

         2.23 Substantial Part. More than fifty percent (50%) of the rentable
square feet of the Premises, the Building or the Complex, as the case may be.

         2.24 Tenant's Property. Any and all personal property, furniture,
business trade fixtures, inventory and equipment located in the Premises and
owned by Tenant together with all leasehold and tenant improvements and
Alterations installed in or performed by Tenant or its Agents or on behalf of
Tenant or by Landlord on behalf of Tenant pursuant to the Work Agreement (as
hereinafter defined) or the terms of this Lease but expressly excluding those
items of standard base building work insured by Landlord and provided at
Landlord's sole cost and expense, if any, as more fully described in the Work
Agreement.

         2.25 Work Agreement.  Attached hereto as Exhibit B.

                                   ARTICLE 3
                                  THE PREMISES

         3.1 Lease of Premises. In consideration of the agreements contained
herein, Landlord hereby leases the Premises to Tenant, and Tenant hereby leases
the Premises from Landlord, for the Term and upon the terms and conditions
hereinafter provided. The Premises are leased subject to, and Tenant agrees not
to violate, all present and future covenants, conditions and restrictions of
record which affect the Land. The Premises shall not include an easement for
light, air or view.

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         3.2 Landlord's Reservations. In addition to the other rights of
Landlord under this Lease, Landlord reserves the right to (i) change the street
address and/or name of the Building or the Complex, (ii) install, erect, use,
maintain and repair mains, pipes, conduits and other such facilities to serve
the Complex and the Building in and through the Premises, (iii) grant to anyone
the exclusive right to conduct any particular business or undertaking in the
Complex, (iv) control the use of the roof and exterior walls of the Building and
the Complex for any purpose, subject to any roof rights of Tenant hereunder, and
(v) perform such other acts and make such other changes with respect to the
Common Area, the Complex and the Building as Landlord, in the exercise of sound
business judgment, deems appropriate. Provided there is no unreasonable, adverse
impact on Tenant's business operations, Landlord may exercise any or all of the
foregoing rights without being deemed guilty of an eviction, actual or
constructive.

                                   ARTICLE 4
                                      TERM

         4.1 Lease Term. The Term shall commence on the Commencement Date and
expire at midnight on the Expiration Date. If Substantial Completion of the
Premises has not occurred on the date set forth in Article 1 as the Commencement
Date, then the Commencement Date shall be the date of Substantial Completion;
provided, that if Tenant uses or accepts the Premises before Substantial
Completion or the date set forth in Article 1 as the Commencement Date, then the
Commencement Date shall be the date upon which Tenant uses or accepts the
Premises (subject to Tenant's right to early access to the Premises under the
Work Agreement). In such event, the Expiration Date shall be adjusted
accordingly so that the period of the Term is not changed. If requested by
Landlord, Tenant shall within fifteen (15) days of such request sign a
declaration acknowledging the Commencement Date and the Expiration Date in the
form attached hereto and made a part hereof as Exhibit C.

                                   ARTICLE 5
                                      RENT

         5.1 Base Rent. Tenant shall pay to Landlord the Base Rent as specified
in Article 1.6

         5.2 Payment of Base Rent. Base Rent for each Lease Year shall be
payable in equal monthly installments, in advance, without demand, notice,
deduction, offset or counterclaim, on or before the first day of each and every
calendar month during the Term, except that, if the Commencement Date occurs on
a date other than on the first day of a calendar month, Base Rent prorated from
the Commencement Date to the end of the month in which the Commencement Date
falls shall be due and payable on the Commencement Date. Tenant shall pay the
Base Rent and all Additional Rent, by good check or in lawful currency of the
United States of America, to Landlord at Landlord's Address, or to such other
address or in such other manner as Landlord from time to time specifies by
written notice to Tenant. Any payment made by Tenant to Landlord on account of
Base Rent may be credited by Landlord to the payment of any late charges then
due and payable and to any Base Rent or Additional Rent then past due before
being credited to Base Rent currently due.

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         5.3 Additional Rent. All sums payable by Tenant under this Lease, other
than Base Rent, shall be deemed "Additional Rent," and, unless otherwise set
forth herein, shall be payable in the same manner as set forth above for Base
Rent.

         5.4 Late Payment. If Tenant fails to pay any Rent within ten (10) days
after such Rent becomes due and payable, Tenant shall pay to Landlord a late
charge of five percent (5%) of the amount of such overdue Rent. In addition, any
such late Rent payment shall bear interest from the date such Rent became due
and payable to the date of payment thereof by Tenant at the Interest Rate. Such
late charge and interest shall be due and payable within two (2) days after
written demand from Landlord.

                                   ARTICLE 6
                                SECURITY DEPOSIT

         6.1 General. Simultaneously with the execution of this Lease, Tenant
shall deposit with Landlord the Security Deposit in cash or in the form of a
letter of credit, which shall be held by Landlord, without obligation for
interest, as security, for the performance of Tenant's obligations and covenants
under this Lease. The Security Deposit is not an advance rental deposit or a
measure of Landlord's damages in case of an Event of Default. If an Event of
Default shall occur or if Tenant fails to surrender the Premises in the
condition required by this Lease, Landlord, after the expiration of any
applicable notice and cure period and upon five (5) days' prior notice to
Tenant, may, without prejudice to any other remedy that Landlord may have on
account thereof, apply the amount of the Security Deposit required to cure such
default or to remedy the condition of the Premises. If Landlord so applies the
Security Deposit or any portion thereof before the Expiration Date or earlier
termination of this Lease, Tenant shall deposit with Landlord, upon demand, the
amount necessary to restore the Security Deposit to its original amount. If
Landlord shall sell or transfer its interest in the Building or the Complex,
Landlord shall have the right to transfer the Security Deposit to such purchaser
or transferee, in which event Tenant shall look solely to the new landlord for
the return of the Security Deposit, and Landlord thereupon shall be released
from all liability to Tenant for the return of the Security Deposit. Landlord
shall give Tenant notice of this transfer, but this notice may be given within a
reasonable time after the transfer occurs. Although the Security Deposit shall
be deemed the property of Landlord, any remaining balance of the Security
Deposit shall be returned to Tenant within forty-five (45) days after the
Expiration Date or earlier termination of this Lease that all of Tenant's
obligations under this Lease have been fulfilled. Landlord shall conduct a "Post
Move-Out Inspection" of the Premises within fifteen (15) days after the
Expiration Date or earlier termination of this Lease.

         6.2 Security in the Form of a Letter of Credit. If the Security Deposit
is a letter of credit, such letter of credit shall (i) be unconditional and
irrevocable, (ii) in form and substance reasonably satisfactory to Landlord,
(iii) be issued by a commercial bank that is located in the Washington, D.C.
metropolitan area, is federally insured, has a net worth of at least
$100,000,000, and is otherwise reasonably acceptable to Landlord, (iv) be
transferable and assignable to the owner from time to time of the Complex, and
(v) not expire until at least sixty (60) days after the Expiration Date. If the
letter of credit is issued for one (1) year (or other

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period) at a time, the letter of credit must be automatically renewed on an
annual (or other periodic) basis at least thirty (30) days prior to the
expiration of the existing letter of credit. If Landlord draws on the letter of
credit in accordance with this Lease, Tenant shall promptly provide Landlord
with a replacement letter of credit or with cash so that the Security Deposit is
restored to the amount then required to be maintained under Article 6.3.

         6.3  Reduction of the Security Deposit.

              (a) The Security Deposit shall be reduced by 20% of the original
amount (i.e., $100,000) upon the commencement of the second and each successive
Lease Year provided that: (i) an Event of Default does not then exist, and (ii)
a monetary Event of Default has not occurred during the immediately preceding
Lease Year. Notwithstanding the foregoing, provided, in no event shall the
Security Deposit be reduced to less than $19,428.95.

              (b) In addition to subarticle (a) above, the Security Deposit
shall be reduced to $19,428.95 if Tenant maintains profitable operations, total
assets of at least $50,000,000, and current assets of at least $25,000,000 for
the duration of one fiscal year of Tenant.

                                   ARTICLE 7
                               OPERATING EXPENSES

         7.1 Tenant's Proportionate Share of Operating Expenses. Commencing
January 1, 2001 and continuing throughout the remainder of the Term, Tenant
shall pay to Landlord, as Additional Rent, Tenant's Proportionate Share of the
amount by which the Operating Expenses during each calendar year exceed the
Operating Expenses during the Base Year for Operating Expenses. If the
Expiration Date is other than the last day of a calendar year, Tenant's
Proportionate Share of Operating Expenses shall be adjusted to reflect the
actual period of occupancy during the calendar year.

         7.2  Operating Expenses Defined.

              (a) As used herein, the term "Operating Expenses" shall mean all
expenses, disbursements and costs of every kind and nature which Landlord incurs
because of or in connection with the ownership, maintenance, management, repair,
alteration, replacement and operation of the Building and Complex (which
expressly includes the Land, the Parking Facilities and the Common Area)
including the following:

                  (1) Wages and salaries of all employees, including an on-site
management agent and staff, whether employed by Landlord or its management
company and all costs related to or associated with such employees or the
carrying out of their duties, including uniforms and their cleaning, taxes, auto
allowances and insurance and benefits (including contributions to pension and/or
profit sharing plans and vacation or other paid absences), but only to the
extent that such wages and salaries are for the performance of services by such
personnel in connection with the management, operation, repair or maintenance of
the Complex;

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                  (2) All supplies and materials, including janitorial and
lighting supplies;

                  (3) All utilities, including electricity, telephone (including
all costs and expenses of telephone service for the sprinkler alarm system, if
any), water, sewer, power, gas, heating, lighting and air conditioning for the
Building, except to the extent such utilities are charged directly to or paid
directly by, a tenant of the Building;

                  (4) All insurance (including any reasonable deductibles)
purchased by Landlord or its management company relating to the Building and any
equipment or other property contained therein or located thereon including
casualty, liability, rental loss, sprinkler and water damage insurance;

                  (5) All repairs to the Building and all mechanical components
and equipment therein (excluding repairs paid for by the proceeds of insurance
or by Tenant or other third parties other than as a part of the Operating
Expenses), including interior, exterior, structural or non-structural, and
regardless of whether foreseen or unforeseen;

                  (6) All maintenance of the Building and all mechanical
components and equipment therein including painting, ice and snow' removal.
landscaping, groundskeeping and the patching, painting and resurfacing of
driveways and parking lots;

                  (7) A commercially reasonable management fee payable to
Landlord and/or the company or companies managing the Complex, including a
separate fee for the Parking Facilities, if any;

                  (8) All maintenance, operation and service agreements for the
Building, and any equipment related thereto, including service and/or
maintenance agreements for the sprinkler system in the Building, if any
(excluding those paid for by Tenant or any third parties other than as a part of
Operating Expenses);

                  (9) Reasonable accounting, consulting and legal fees (whether
attributable to Landlord's in-house attorneys or paralegals);

                  (10) Any reasonable additional services not provided to the
Building or the Complex at the Commencement Date but thereafter provided by
Landlord as Landlord shall deem necessary in maintaining, repairing or operating
the Building or the Complex;

                  (11) All condominium dues and related charges and all
assessments, whether general, special or otherwise, levied against Landlord, the
Building or Complex pursuant to any condominium regime or any declaration or
other instrument affecting the Building or any part or component thereof;

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                  (12) All computer rentals for energy management or security
monitoring systems, if any;

                  (13) Any capital improvements made to the Building after the
Commencement Date (other than those made for the addition of rentable square
footage to the Building or for the sole benefit or a Building tenant pursuant to
its lease), the cost of which shall be amortized over such reasonable period as
Landlord shall determine [but not less than five (5) years], together with
interest on the unamortized balance of such cost at a rate equal to the lesser
of two (2) percentage points above the then prime rate of interest per annum as
published in the Money Rates section of The Wall Street Journal or the actual
rate as may have been paid by Landlord on funds borrowed for the purposes of
constructing said capital improvements, but only to the extent that such capital
improvement is (i) intended by Landlord to result in the reduction of Operating
Expenses, (ii) necessary or advisable to comply with Legal Requirements that
become effective after the Commencement Date, or (iii) necessary or advisable to
comply with insurance requirements or recommendations of Landlord's insurer or
Mortgagee;

                  (14) All costs incurred in implementing and operating any
transportation management program, ride sharing program or similar program
including the cost of any transportation program fees, mass transportation fees
or similar fees charged or assessed by any governmental or quasi-governmental
entity or pursuant to any Legal Requirements;

                  (15) Any payments made by the Landlord under any easement or
license agreement, declaration, restrictive covenant or instrument pertaining to
the payment of sharing of costs among property owners; and

                  (16) Reasonable reserves for replacements, repairs and
contingencies.

              (b) If during any calendar year (including the Base Year for
Operating Expenses), the average occupancy rate for the Building is less than
ninety-five percent (95%) or Landlord is not supplying services to 95% of the
rentable area of the Building at any time during any such calendar year,
Operating Expenses for such calendar year shall be deemed to include all
additional costs and expenses of ownership, maintenance, management and
operation of the Building which Landlord determines that it would have paid or
incurred during any such calendar year if such average occupancy rate for the
Building had been 95% and had Landlord been supplying services to 95% of the
rentable square feet of the Building throughout such calendar year. If any
amounts comprising Operating Expenses are incurred not just with respect to the
office area of the Building, but also with respect to the retail area of the
Building, if any, then Landlord shall endeavor in good faith and use its
reasonable efforts to allocate such amounts between the office and retail areas
of the Building. Such allocation shall be made on a fair and equitable basis,
based on the usage of or benefits received from the service, utility or item in
question.

         7.3  Exclusions from Operating Expenses.

     (a) Operating Expenses shall not include the following:

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                  (1) Legal fees, space planners' fees, real estate brokers'
leasing commissions and advertising expenses incurred in connection with the
original or future leasing of space in the Building;

                  (2) Costs and expenses of alterations or improvements of the
Premises or the leasehold premises of other individual tenants in the Building;

                  (3) Costs of correcting defects in, or inadequacy of, the
design or construction of the Building or the materials used in the construction
of the Building or the equipment or appurtenances thereto to the extent covered
by warranties and recovered by Landlord;

                  (4) Depreciation, interest and principal payments on mortgages
and other financing or refinancing costs, if any, other than amortization of and
the interest factor attributable to permitted capital improvements;

                  (5) Costs and expenses associated with the operation of the
business of the person or entity which constitutes Landlord as the same are
distinguished from the costs of operation of the Building, including accounting
and legal matters, costs of defending any lawsuits with any Mortgagee (except to
the extent the actions of Tenant or any other tenant may be in issue), costs of
selling or financing any of Landlord's interest in the Building and outside fees
paid in connection with disputes with other tenants;

                  (6) Costs and expenses directly resulting from the gross
negligence or willful misconduct of Landlord or its Agents to the extent
provable by Tenant;

                  (7) Real Estate Taxes;

                  (8) Landlord's income taxes;

                  (9) Landlord's costs of any service sold or provided to any
tenant or occupant of the Building for which Landlord is reimbursed as an
additional charge or rental over and above the base rent and escalations payable
under the lease or occupancy agreement with that tenant or other occupant
(including after-hours HVAC costs or over-standard electrical consumption costs
incurred by other tenants or occupants or excess insurance costs arising from a
tenant's specific use or equipment) and costs of services provided to some
tenants, but not to Tenant;

                 (10) The initial cost of construction of the Building;

                 (11) Expenses for repairs or replacements to the extent such
expenses are covered by and reimbursed to Landlord by virtue of warranties from
contractors or suppliers;

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                 (12) The cost of any item of service or repair to the extent
covered by and reimbursed to Landlord under any warranty, guaranty or insurance
policy maintained or held by Landlord;

                 (13) Any Operating Expenses which are payable by any tenant
directly to the provider of the service or for which Landlord is entitled to be
and is reimbursed directly by a tenant, or by insurance proceeds;

                 (14) Legal or accounting fees, costs and disbursements for
negotiating leases or enforcing the lease obligations of other tenants in the
Complex;

                 (15) Damage and repairs attributable to condemnation, fire or
other casualty to the extent covered by insurance actually maintained or
required under the provisions of this Lease to be maintained by Landlord and
collected by Landlord;

                 (16) Interest, penalties or other costs arising out of
Landlord's failure to make timely payments of its obligations, unless such
failure is caused by Tenant's conduct;

                 (17) Repairs required to correct violations of Legal
Requirements existing as of the Commencement Date;

                 (18) Compensation of officers or executives of Landlord above
the level of property manager;

                 (19) Costs to acquire sculpture, paintings or other objects of
act;

                 (20) Costs arising from the presence of Hazardous Materials (as
defined in Article 26) in, about or below the Building or Complex; and

              Landlord shall not collect more than one hundred percent (100%) of
the Operating Expenses actually incurred by Landlord and shall not recover any
items of cost more than once.

         7.4 Estimated Payments. Commencing on January 1, 2001, Landlord shall
submit to Tenant, before the beginning of each calendar year, a statement of
Landlord's estimate of the Operating Expenses payable by Tenant during such
calendar year. In addition to the Base Rent, Tenant shall pay to Landlord on or
before the first day of each month during such calendar year an amount equal to
one-twelfth (1/12) of the estimated Operating Expenses payable by Tenant for
such calendar year as set forth in Landlord's statement. If Landlord fails to
give Tenant notice of its estimated payments due under this Article for any
calendar year, then Tenant shall continue making monthly estimated payments in
accordance with the estimate for the previous calendar year until a new estimate
is provided by Landlord. If Landlord determines that, because of unexpected
increases in Operating Expenses or other reasons, Landlord's estimate of the
Operating Expenses was too low, then Landlord shall have the right to give a new
statement of the estimated Operating Expenses due from Tenant for such calendar
year or the balance

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thereof and to bill Tenant for any deficiency which may have accrued during such
calendar year, and Tenant shall thereafter pay monthly estimated payments based
on such new statement.

         7.5 Actual Operating Expenses. Within one hundred eighty (180) days
after the end of each calendar year, Landlord shall submit a statement to Tenant
showing the actual Operating Expenses for such calendar year and Tenant's
Proportionate Share of the amount by which such Operating Expenses exceed the
Operating Expenses during the Base Year. If for any calendar year, Tenant's
estimated monthly payments exceed Tenant's Proportionate Share of the amount by
which the actual Operating Expenses for such calendar year exceed the Operating
Expenses during the Base Year, then Landlord shall give Tenant a credit in the
amount of the overpayment toward Tenant's next monthly payments of estimated
Operating Expenses. If for any calendar year Tenant's estimated monthly payments
are less than Tenant's Proportionate Share of the amount by which the actual
Operating Expenses for such calendar year exceed the Operating Expenses during
the Base Year, then Tenant shall pay the total amount of such deficiency to
Landlord within thirty (30) days after receipt of the statement from Landlord.
Landlord's and Tenant's obligations with respect to any overpayment or
underpayment of Operating Expenses shall survive the expiration or earlier
termination of this Lease.

         7.6 Tenant's Right to Audit. Tenant shall pay to Landlord all amounts
payable pursuant to Articles 7.4 and 7.5 herein without off-set or deduction
within the time periods provided for in each respective Article notwithstanding
that Tenant may object to Landlord's statement rendered pursuant thereto. In the
event Tenant shall dispute the amount set forth in Landlord's statement as
described in Article 7.5 herein and Tenant pays the full amount set forth in
Landlord's reconciliation statement then, Tenant shall have the right, not later
than sixty (60) days following receipt of such statement, to cause Landlord's
books and records with respect to the preceding calendar year to be audited by
an independent Certified Public Accountant mutually acceptable to Landlord and
Tenant, and who shall not be compensated on a contingency basis. Such audit
shall occur upon not less than twenty (20) days prior written notice to
Landlord, at Landlord's place of business or the actual location of Landlord's
books and records if different from Landlord's place of business, during
Landlord's normal business hours. The amounts payable under this Article by
Landlord to Tenant or by Tenant to Landlord, as the case may be, shall be
appropriately adjusted on the basis of such audit. If such audit discloses a
liability for further refund by Landlord to Tenant in excess of five percent
(5%) of the payments previously made by Tenant for such calendar year, the
actual out-of-pocket cost of such audit incurred by Tenant shall be borne by
Landlord and paid within thirty (30) days of demand from Tenant subject to
Landlord's right to dispute the results of Tenant's audit as hereinafter
described; otherwise, the cost of such audit shall be borne by Tenant.
Notwithstanding the foregoing, in no event shall Landlord's cost for such audit
exceed Three Thousand Dollars ($3,000). If Tenant's audit discloses a liability
for further refund by Landlord to Tenant of one percent (1%) or less or a
liability for further payment by Tenant, then in that event the actual
out-of-pocket cost to respond to Tenant's audit incurred by Landlord (including
reasonable consultants' and attorneys' fees) shall be borne by Tenant and paid
within thirty (30) days of demand from Landlord. In the event that the Landlord
disputes the results of the Tenant's audit, Landlord shall notify Tenant within
thirty (30) days of delivery of the results of the Tenant's audit together with
reasonably detailed documentation related thereto. If Landlord disputes the
Tenant's audit, Landlord shall within said 30-day period, designate an
independent Certified

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<PAGE>   14

Public Accounting firm from one of the "Big-Five" (i.e., Arthur Anderson & Co.
or similar company) and said firm shall review the Tenant's audit and, if
necessary, shall re-audit the Landlord's books and records and issue a final
report within ninety (90) days of the expiration of said 30-day period. Tenant
shall fully cooperate and instruct its auditor to fully cooperate with the
review conducted by the Big-Five firm. The findings of the Big-Five firm shall
be conclusive and binding on the parties hereto as it relates to the statement
at issue. In the event that the Big-Five firm's report confirms the Tenant's
audit then the Landlord shall pay the cost of the Big-Five audit which shall be
in addition to any obligation Landlord may have to pay Tenant's expenses as
aforesaid. If the report discloses a liability by Landlord to Tenant of less
than the amount of Tenant's audit, Tenant shall pay the cost (not to exceed
$3,000) of the Big-Five audit which shall be in addition to any obligation
Tenant may have to pay Landlord's expenses as aforesaid. If Tenant shall not
request an audit in accordance with the provisions of this Article within sixty
(60) days of receipt of Landlord's reconciliation statement of actual Operating
Expenses, such statement shall be conclusive and binding upon Landlord and
Tenant.

                                   ARTICLE 8
                                      TAXES

         8.1 Tenant's Proportionate Share of Real Estate Taxes. Commencing
January 1, 2001 and continuing throughout the remainder of the Term, Tenant
shall pay to Landlord, as Additional Rent, Tenant's Proportionate Share of the
amount by which the Real Estate Taxes during each calendar year exceed the Real
Estate Taxes for the Base Year for Real Estate Taxes. Real Estate Taxes for the
Base Year for Real Estate Taxes and for each successive calendar year during the
Term shall, if necessary, be adjusted by Landlord, in its reasonable discretion,
to reflect a fully assessed Complex. If the Expiration Date is other than the
last day of a calendar year, Tenant's Proportionate Share of Real Estate Taxes
shall be adjusted to reflect the actual period of occupancy during the calendar
year.

         8.2 Definition of Real Estate Taxes. As used herein, the term "Real
Estate Taxes" shall mean all taxes and assessments, general or special, ordinary
or extraordinary, foreseen or unforeseen, assessed, levied or imposed by any
governmental authority upon the Complex and upon the fixtures, machinery,
equipment or systems in, upon or used in connection with any of the foregoing,
and the rental, revenue or receipts derived therefrom, under the current or any
future taxation or assessment system or modification of, supplement to, or
substitute for such system. Real Estate Taxes also shall include-special
assessments which are in the nature of or in substitution for real estate taxes,
including road improvement assessments, special use area assessments, school
district assessment, vault space rentals and any business, professional and
occupational license tax payable by Landlord in connection with the Building. If
at any time the method of taxation prevailing on the date hereof shall be
altered so that in lieu of, as a substitute for or in addition to the whole or
any part of the taxes now levied or assessed, there shall be levied or assessed
a tax of whatever nature, then the same shall be included as Real Estate Taxes
hereunder. Further, for the purposes of this Article, Real Estate Taxes shall
include the reasonable expenses (including attorneys' fees) incurred by Landlord
in challenging or obtaining or attempting to obtain a reduction of such Real
Estate Taxes, regardless of the outcome of such challenge. Notwithstanding the
foregoing, Landlord shall have no obligation to challenge Real Estate Taxes. If
as a result of any such challenge, a tax refund is made to Landlord, then the

                                       14
<PAGE>   15

amount of such refund less the expenses of the challenge shall be deducted from
Real Estate Taxes due in the Lease Year such refund is received.

         8.3 Estimated and Actual Payments. Landlord shall charge Tenant for its
Proportionate Share of Real Estate Taxes and Tenant shall pay such charges in
accordance with the procedures established under Articles 7.4 and 7.5 for
payment of Operating Expenses.

                                    ARTICLE 9
                                     PARKING

         9.1 Parking Spaces. During the Term, and at no additional fee, Tenant
shall have the non-exclusive right to use the Parking Facilities.

         9.2 Changes to Parking Facilities. Landlord shall have the right, from
time to time, with Tenant's consent (which shall not be unreasonably withheld,
conditioned or delayed), to change, alter, add to, temporarily close or
otherwise affect the Parking Facilities; provided, that Landlord shall endeavor
in good faith and use its reasonable efforts to minimize any material
interference with Tenant's beneficial use of the Premises. Tenant shall not use
more spaces than have been allotted to Tenant hereunder.

                                   ARTICLE 10
                                       USE

         10.1 General. Tenant shall occupy the Premises solely for the Permitted
Use. The Premises shall not be used for any other purpose without the prior
written consent of Landlord, which consent shall not be unreasonably withheld,
conditioned or delayed. Tenant shall comply, at Tenant's expense, with (i) all
Legal Requirements, and (ii) any reasonable requests of Mortgagee or any
insurance company providing coverage with respect to the Premises. Tenant shall
not use or occupy the Premises in any manner that is unlawful or dangerous or
that shall constitute waste, unreasonable annoyance or a violation of the
Covenants. Notwithstanding the foregoing, Landlord warrants that, as of the
Commencement Date, the Premises shall comply with all then existing Legal
Requirements, including the laws and regulations promulgated under the Americans
with Disabilities Act.

         10.2 Tenant's Personal Property. Tenant shall pay before delinquency
any business, rent or other tax or fee that is now or hereafter assessed or
imposed upon Tenant's use or occupancy of the Premises, the conduct of Tenant's
business in the Premises or Tenant's Property. If any such tax or fee is enacted
or altered so that such tax or fee is imposed upon Landlord or so that Landlord
is responsible for collection or payment thereof, then Tenant shall pay the
amount of such tax or fee as Additional Rent.

                                       15
<PAGE>   16

                                   ARTICLE 11
                            ASSIGNMENT AND SUBLETTING

         11.1 Consent. Tenant shall not assign, transfer, mortgage or otherwise
encumber this Lease or sublet or rent (or permit a third party, to occupy or
use) the Premises, or any part thereof, nor shall any assignment or transfer of
this Lease or the right of occupancy hereunder be effected by operation of law
or otherwise, without the prior written consent of Landlord, which consent shall
not be unreasonably withheld, conditioned or delayed (any such valid assignment,
sublease or any of the other foregoing shall sometimes be hereinafter referred
to as a "transfer"). For purposes of the foregoing prohibitions, a transfer at
any one time or from time to time of twenty percent (20%) or more of an interest
in Tenant (whether stock, partnership interest or other form of ownership or
control) by any person(s) or entity(ties) having an interest in ownership or
control of Tenant shall constitute an assignment of this Lease, except for the
transfer of stock which is traded on a nationally recognized stock exchange. Any
assignment, encumbrance, or sublease without Landlord's written consent shall be
voidable by Landlord and, at Landlord's election, constitute an Event of Default
hereunder. Notwithstanding the foregoing, in any event, Tenant shall be strictly
prohibited from assigning or subletting its interest in or rights under this
Lease in any way during the final Lease Year of the Term. This Article 11.1 is
subject to Article 11.6.

         11.2 Landlord's Options. If at any time or from time to time during the
Term, Tenant desires to effect a transfer, Tenant shall deliver to Landlord
written notice ("Transfer Notice") setting forth the terms and provisions of the
proposed transfer and the identity of the proposed assignee, sublessee or other
transferee (sometimes referred to hereinafter as a "Transferee"). Tenant shall
also deliver to Landlord with the Transfer Notice, a current financial statement
for the Transferee and such other information as Landlord may reasonably
request. Landlord shall have the option, exercisable by written notice delivered
to Tenant within ten (10) days after Landlord's receipt of the Transfer Notice,
such financial statements and other information, either to:

              (a) approve or disapprove such transfer; or

              (b) terminate this Lease with respect to the entire Premises (or,
in the case of a proposed sublease, only that portion of the Premises which the
Tenant has requested to Sublease), which termination shall be effective thirty
(30) days after Tenant's receipt of Landlord's notice; provided, however, that
this clause (b) shall not apply unless the proposed transfer (either by itself
or when taken together with all prior transfers hereunder) would result in the
transfer of 50% or more of the Premises, and provided, further, that if Landlord
exercises its option to terminate under this clause (b), Tenant may withdraw its
Transfer Notice upon notice to Landlord within five (5) days after Landlord's
notice is given to Tenant.

         11.3 Assignment or Sublet Premium. If Landlord approves an assignment
or subletting of all or any portion of the Premises, Tenant shall pay to
Landlord as Additional Rent, as and when received by Tenant, an amount equal to
fifty percent (50%) of the amount by which (i) all sums paid to Tenant or its
agent by or on behalf of such assignee or subtenant under the assignment or
sublease (after Tenant recoups its reasonable, direct subleasing or assignment

                                       16
<PAGE>   17

costs, such as improvement costs, advertising costs, real estate commissions and
legal fees), exceeds (ii) the then applicable Monthly Base Rent and Additional
Rent paid by Tenant under this Lease and attributable to the portion of the
Premises assigned or sublet.

         11.4 Release. No transfer shall release Tenant of Tenant's obligations
under this Lease or alter the primary liability of Tenant to pay the rent and to
perform all other obligations to be performed by Tenant hereunder. If Landlord
consents to the proposed assignment or subletting, Landlord may require that any
Transferee remit directly to Landlord on a monthly basis all monies due Tenant
by said Transferee, subject to Article 11.3. The acceptance of rent by Landlord
from any other person shall not be deemed to be a waiver by Landlord of any
provision hereof. Consent by Landlord to one transfer shall not be deemed
consent to any subsequent transfer. If an Event of Default occurs by any
Transferee of Tenant or any successor of Tenant in the performance of any of the
terms hereof, Landlord may proceed directly against Tenant without the necessity
of exhausting remedies against such Transferee or successor. Landlord may
consent to subsequent assignments of the Lease or sublettings or amendments or
modifications to the Lease with assignees of Tenant, without notifying Tenant,
or any successor of Tenant, and without obtaining its or their consent thereto
and any such actions shall not relieve Tenant of liability, under this Lease.

         11.5 Administrative and Attorneys' Fees. If Tenant effects a transfer
or requests the consent of Landlord to any transfer, then Tenant shall, upon
demand, pay Landlord a non- refundable administrative fee of Five Hundred
Dollars ($500.00), plus any consultants', engineers' and reasonable attorneys'
fees incurred by Landlord in connection with such transfer or request for
consent (whether attributable to Landlord's in-house attorneys or paralegals or
otherwise). Acceptance of the $500.00 administrative fee and reimbursement of
Landlord's attorneys' and paralegal fees shall in no event obligate Landlord to
consent to any proposed transfer.

         11.6 Assignment or Sublease with an Affiliate. Tenant, without
Landlord's consent, may enter into a transfer with an "Affiliate" (as defined
below) provided (i) in Landlord's reasonable discretion, the financial condition
of the Affiliate is equal to or greater than the financial condition of Tenant
as of the date hereof, (ii) Tenant remains liable under this Lease, and (iii)
the parties execute an assignment of lease on a form approved by Landlord.
Articles 11.3, 11.4 and 11.5 shall apply to a transfer to an Affiliate, but
Article 11.2 shall not apply. In this Lease, the term "Affiliate" means an
entity at least 50% of which is under common ownership or control with Tenant.

                                   ARTICLE 12
                             MAINTENANCE AND REPAIR

         12.1 Landlord's Obligation. Landlord shall not be responsible to make
any repairs, renovations or maintenance to any part of the Premises except as
expressly provided herein. Except for repairs that Tenant is required to make
pursuant to Article 12.2, Landlord shall (i) keep and maintain in good repair
and working order the Building and roof area (excluding Tenant's Property), and
(ii) comply with all Legal Requirements pertaining to the Common Area, including
the common areas of the Building. The cost of such maintenance and

                                       17
<PAGE>   18

repairs to the Building (exclusive of those resulting from Landlord's negligence
or willful misconduct) and the cost of such compliance with Legal Requirements
shall be included in Operating Expenses and paid by Tenant to the extent allowed
in Article 7. Tenant shall immediately give Landlord written notice of any
defect or need for repairs of which the Tenant becomes aware. After such notice,
Landlord shall have a reasonable opportunity to repair or cure such defect.
Landlord's liability with respect to any defects, repairs or maintenance for
which Landlord is responsible under any of the provisions of this Lease shall be
limited to the cost of such repairs or maintenance or the curing of such defect.

         12.2 Tenant's Obligation. Tenant shall, at its own expense, maintain
all parts of the Premises and Tenant's Property (except those for which Landlord
is either expressly responsible or elects to undertake pursuant to Article 12.1
or 12.3 of this Lease) in good condition, promptly making all necessary, repairs
and replacements, including interior, windows, glass and plate glass, doors,
interior walls and finish work, floors and floor covering, lighting and
electrical systems (except for building standard light bulbs, which will be
replaced by Landlord), HVAC and mechanical systems (including fixtures and
equipment), and plumbing work and fixtures.

         12.3 Landlord's Right to Pay, Maintain or Repair. If, within five (5)
days following written notice to Tenant, Tenant fails to pay any amount Tenant
has agreed to pay hereunder or fails to commence to repair or replace any item
which is Tenant's obligation to perform, and diligently pursue timely completion
of such repair and replacement, Landlord may cause all such payments, required
maintenance, repairs or replacements to be made. Tenant shall pay Landlord all
costs incurred in connection therewith (including reasonable attorneys' fees and
costs of collection) within thirty (30) days of the receipt by the Tenant of an
invoice from Landlord. Interest shall accrue thereon at the Interest Rate if not
paid within said 30-day period from the due date until paid.

         12.4 Renovation of Common Corridors. Before the end of 1999, Landlord,
at its cost, will make the following improvements to the common corridors on the
first floor of the Building: (i) install new carpet, (ii) paint, and (iii)
replace ceiling tiles and light fixtures, as needed (collectively, "Landlord's
Renovations"). All materials and plans for Landlord's Renovations shall be
subject to Landlord's exclusive choice, but at a minimum shall be building
standard.

                                   ARTICLE 13
                        INITIAL CONSTRUCTION; ALTERATIONS

         13.1 Initial Construction. Landlord and Tenant agree that the
construction of the Landlord Work and other initial construction with respect to
the Premises shall be performed in accordance with Exhibit B (Work Agreement)
attached hereto.

         13.2 Alterations. Except with regard to decorative or non-structural
Alterations which do not exceed One Dollar ($1.00) per rentable square foot in
the aggregate per Lease Year, Tenant shall not make or permit any Alterations
without the prior written consent of Landlord which consent shall not be
unreasonably withheld or delayed. Landlord may impose

                                       18
<PAGE>   19

any reasonable conditions to its consent, including (i) delivery to Landlord of
written and unconditional waivers of mechanic's and materialmen's liens as to
the Premises, the Building, the Complex and the Land for all work, labor and
services to be performed and materials to be furnished, signed by all
contractors, subcontractors, materialmen and laborers participating in the
Alterations, (ii) prior approval of the plans and specifications and Tenant's
contractor(s) with respect to the Alterations, (iii) supervision by Landlord's
representative at Landlord's expense of the Alterations and (iv) delivery to
Landlord of payment and performance bonds naming Landlord and Mortgagee as
obligees. The Alterations shall conform to the requirements of Landlord's and
Tenant's insurers and of any Legal Requirements applicable to the Premises,
shall be performed in accordance with the terms and provisions of this Lease in
a good and workmanlike manner befitting a first class office/industrial building
and shall not adversely affect the value, utility or character of the Premises.
If the Alterations are not performed as herein required, Landlord shall have the
right, at Landlord's option, to halt any further Alterations, or to require
Tenant to perform the Alterations as herein required or to require Tenant to
return the Premises to its condition before such Alterations. Notwithstanding
the foregoing, if any mechanic's or materialmen's lien is filed against the
Premises, the Building or the Land for work claimed to have been done for, or
materials claimed to have been furnished to or for the benefit of, Tenant, such
lien shall be discharged of record by Tenant within twenty (20) business days
after notice by the payment thereof or the filing of any bond required by law.
If Tenant shall fail to discharge any such lien, Landlord may (but shall not be
obligated to) discharge the same, the cost of which shall be paid by Tenant
within three (3) business days of demand by Landlord. Such discharge by Landlord
shall not be deemed to waive or release the default of Tenant in not discharging
the same. Neither Landlord's consent to the Alterations nor anything contained
in this Lease shall be deemed to be the agreement or consent of Landlord to
subject Landlord's interest in the Premises, the Building, the Complex or the
Land to any mechanic's or materialmen's liens which may be filed in respect of
the Alterations.

         13.3 Removal of Alterations.

              (i) Except to the extent Tenant requests and Landlord designates
otherwise at the time Landlord approves such Alterations, all or any part of the
Alterations made after the Commencement Date of this Lease (including
wall-to-wall carpet), whether made with or without the consent of Landlord,
shall, at the election of Landlord, either be removed by Tenant at its expense
before the expiration of the Term or shall remain upon the Premises and be
surrendered therewith at the Expiration Date or earlier termination of this
Lease as the property of Landlord without disturbance, molestation or injury. If
Landlord requires the removal of all or part of the Alterations, Tenant, at its
expense, shall repair any damage to the Premises or the Building caused by such
removal. If Tenant fails to remove the Alterations within thirty (30) days after
Landlord's request, then Landlord may remove the same and the cost of such
removal and repair of any damage caused by the same, together with any and all
damages which Landlord may suffer and sustain by reason of the failure of Tenant
to remove the same, shall be charged to Tenant and paid upon demand. This clause
(i) is subject to clause (ii) below.

              (ii) At least thirty (30) days before the Expiration Date,
Landlord shall notify Tenant of any Cabling to be removed. On or before the
Expiration Date, Tenant shall remove any Cabling so designated by Landlord, and
shall repair any damage to the Building

                                       19
<PAGE>   20

caused by this removal. Landlord shall reimburse Tenant for one-half of the
removal and repair costs incurred by Tenant under this clause (ii). Any Cabling
not designated for removal by Landlord shall be left in the Building and shall
become Landlord's property upon the expiration of the Term.

         13.4 Landlord Alterations. Subject to Article 12.1, 13.1 and Exhibit B,
Landlord shall have no obligation to make any Alterations in or to the Premises.
Except as expressly provided in the preceding sentence, Tenant shall accept the
Premises in its "AS-IS" condition.

                                   ARTICLE 14
                                      SIGNS

         14.1 General. Landlord, at Tenant's cost, shall install (i) one (1)
suite entry sign for the Premises, the form and location of which shall be
approved in writing in advance by Landlord, and (ii) a listing for Tenant on the
Building lobby directory. Except as provided in the previous sentence, no sign,
advertisement or notice shall be inscribed, painted, affixed, placed or
otherwise displayed by Tenant or such subtenant on any part of the Land or the
outside or the inside (including windows) of the Complex, the Building or the
Premises without the Landlord's prior written approval, which approval shall not
be unreasonably withheld, conditioned or delayed. If any prohibited sign,
advertisement or notice is nevertheless exhibited by Tenant, Landlord shall have
the right to remove the same, and Tenant shall pay any and all expenses incurred
by Landlord in such removal, together with interest thereon at the Interest
Rate. upon demand. Landlord shall have the right to prohibit any sign,
advertisement, notice or statement to the public by Tenant in Landlord's
reasonable discretion.

         14.2 Monument Sign. If Landlord constructs a monument sign for the
Complex or Building, Tenant, at its cost, may install thereon a sign with its
name and logo ("Tenant's Monument Sign"). The design and location of Tenant's
Monument Sign shall be approved by Landlord. Tenant, at its cost, shall maintain
Tenant's Monument Sign in good condition at all times, shall remove it at the
end of the Term, and shall repair any damage caused by this removal.

         14.3 Exterior Building Sign.

              (i) As of the date hereof, Landlord does not permit any tenant to
have signage on the exterior of the Building. If Landlord, in its sole
discretion, decides to allow tenants occupying office space in the Building to
have exterior building signage, Tenant, at its cost and subject to the remaining
terms of this Article 14.3, may install a sign with its name and logo on the
exterior facade of the Building ("Tenant's Exterior Sign").

             (ii) The design and location of Tenant's Exterior Sign shall be
approved by Landlord. Tenant, at its cost, shall maintain Tenant's Exterior Sign
in good condition at all times, shall remove it at the end of the Term, and
shall repair any damage caused by this removal.

                                       20
<PAGE>   21

            (iii) The rights granted to Tenant in this Article with respect to
Tenant's Exterior Sign shall apply only as long as Tenant is leasing more
rentable square feet in the Building than any other tenant. If at any time
Tenant is not leasing more rentable square feet in the Building than any other
tenant, Landlord may require Tenant, at Tenant's cost, to remove the Exterior
Sign and to repair any damage caused by this removal.

                                   ARTICLE 15
                         TENANT'S EQUIPMENT AND PROPERTY

         15.1 Moving Tenant's Property. Any and all damage or injury to the
Premises caused by installation, removal or moving of the Tenant's Property into
or out of the Premises, or due to the same being on the Premises, shall be
promptly repaired by Tenant.

         15.2 Installing and Operating Tenant's Equipment. Except as provided in
the Work Agreement, without first obtaining the written consent of Landlord
which consent Landlord shall not unreasonably withhold or delay, Tenant shall
not install or operate in the Premises (i) any electrically operated equipment
or other machinery, other than normal and customary equipment reasonably
necessary for Tenant's Permitted Use of the Premises and that does not require
wiring, cooling or other service in excess of existing Building systems, (ii)
any equipment of any kind or nature whatsoever which will require any changes,
replacements or additions to, or changes in the use of, any water, heating,
plumbing, air conditioning or electrical system of the Premises or the Building,
or (iii) any equipment which causes the floor load to exceed the load limits set
by Landlord for the Building. Machines and equipment which cause noise or
vibration that may be transmitted to the structure of the Building or to any
space therein so as to be objectionable to Landlord shall be installed and
maintained by Tenant, at its expense, on vibration eliminators or other devices
sufficient to eliminate such noise and vibration.

                                   ARTICLE 16
                                 RIGHT OF ENTRY

         16.1 General. Tenant shall permit Landlord or its Agents, with
reasonable prior notice, during normal business hours and accompanied by a
representative of Tenant (except in the case of an emergency), to enter the
Premises (i) to examine, inspect and protect the Premises, (ii) to make such
alterations and repairs or perform such maintenance which in the sole judgment
of Landlord may be deemed necessary or desirable, or (iii) to exhibit the same
to present or future Mortgagee.

                                   ARTICLE 17
                                    INSURANCE

         17.1 Insurance Rating. Tenant shall not conduct or permit any activity,
or place any equipment or material, in or about the Premises, the Building, the
Complex or the Common Area which will increase the rate of fire or other
insurance on the Building or the Complex; and if any increase in the rate of
insurance is stated by any insurance company or by the applicable insurance
rating bureau to be due to any activity, equipment or material of Tenant in or
about the

                                       21
<PAGE>   22
Premises, the Building, the Complex or the Common Area, such statement shall be
conclusive evidence that the increase in such rate is due to the same and, as a
result thereof, Tenant shall pay such increase to Landlord upon demand.

         17.2 Liability Insurance. Tenant shall, at its sole cost and expense,
procure and maintain throughout the Term a commercial general liability policy
insuring against claims, demands or actions for bodily injury, death, personal
injury, and loss or damage to property arising out of or in connection with: (i)
the Premises; (ii) the condition of the Premises; (iii) Tenant's operations in,
maintenance and use of the Premises, Building and Common Area, and (iv) Tenant's
liability assumed under this Lease. Such insurance shall have such combined
single limit as reasonably required by Landlord from time to time, but in no
event less than Three Million Dollars ($3,000,000.00) per occurrence, on an
occurrence basis, and shall be primary over any insurance carried by Landlord.
Endorsements shall be obtained for cross-liability and contractual liability.

         17.3 Insurance for Tenant's Property. Tenant shall, at its sole cost
and expense, procure and maintain throughout the Term a property insurance
policy (written on an "All Risk" basis) insuring all of Tenant's Property, for
not less than the full replacement cost of said property. All proceeds of such
insurance shall be used to repair or replace Tenant's Property. If this Lease is
terminated as the result of a casualty in accordance with Article 21 herein, the
proceeds of said insurance attributable to the repair and/or replacement of any
leasehold improvements, tenant improvements or Alterations performed by or on
behalf of Tenant or by Landlord pursuant to the terms of the Work Agreement or
this Lease shall be the property, of the Landlord and paid to Landlord upon
demand together with interest thereon at the Interest Rate until paid.

         17.4 Additional Insurance.

              (a) Tenant shall, at its sole cost and expense, procure and
maintain business interruption insurance in an amount not less than the Base
Rent due hereunder for the first Lease Year, which amount shall be revised from
time to time upon the reasonable request of the Landlord or its Mortgagee.

              (b) Tenant shall, at all times during the term hereof, maintain in
effect workers' compensation insurance as required by applicable Legal
Requirements.

         17.5 Requirements of Insurance Coverage. All such insurance required to
be carried by Tenant herein shall be with an insurance company licensed to do
business in the Commonwealth of Virginia and rated not lower than A-XII in the
A.M. Best Rating Guide. Such insurance (i) shall contain an endorsement that
such policy shall remain in full force and effect notwithstanding that the
insured has released its right of action against any party before the occurrence
of a loss; (ii) shall name Landlord as an additional insured party and loss
payee; and (iii) shall provide that the policy shall not be canceled, failed to
be renewed or materially amended without at least thirty (30) days' prior
written notice to Landlord and, at Landlord's reasonable request, any Mortgagee.
On or before the Commencement Date and, thereafter, not less than thirty (30)
days before the expiration date of the insurance policy, an original of the

                                       22
<PAGE>   23

policy (including any renewal or replacement policy) or a certified copy
thereof, together with evidence satisfactory to Landlord of the payment of all
premiums for such policy, shall be delivered to Landlord.

         17.6 Waiver of Subrogation. Notwithstanding anything to the contrary in
this Lease, each party hereby releases the other party hereto from liability,
for any loss or damage to any building, structure or tangible personal property,
or any resulting loss of income, or losses under worker's compensation laws and
benefits, notwithstanding that such loss, damage or liability may arise out of
the negligent or intentionally tortious act or omission of the other party or
its Agents, if such loss or damage is covered by insurance benefiting the party,
suffering such loss or damage or was required to be covered by insurance
pursuant to this Lease. Each party, hereto shall use reasonable efforts to have
a waiver of subrogation clause (providing that such waiver of right of recovery,
against the other party shall not impair the effectiveness of such policy or the
insured's ability, to recover thereunder) included in its said policies, and
shall promptly notify the other in writing if such clause cannot be included in
any such policy; if such waiver of subrogation clause shall not be available,
then the foregoing waiver of right of recovery shall be void.

         17.7 Security. Tenant may enter into a contract to maintain the
security, system for the Premises. Such engagement shall in no way increase
Landlord's liability, for occurrences and/or consequences which such a system is
designed to detect or avert and Tenant shall look solely to its insurer as set
out above for claims for damages or injury to any person or property.

         17.8 Landlord's Insurance. Landlord shall maintain liability, fire and
extended coverage insurance on the Complex, together with such other types of
insurance coverage as are customarily maintained by owners of comparable
projects in the Northern Virginia area and such other insurance coverage as
Landlord may elect in its reasonable discretion to carry.

                                   ARTICLE 18
                         LANDLORD SERVICES AND UTILITIES

         18.1 Ordinary Services to the Premises. As long as no Event of Default
has occurred and is continuing and subject to Legal Requirements and Force
Majeure events, Landlord shall furnish to the Premises throughout the Term (i)
electricity appropriate for the Permitted Use, (ii) heating and air conditioning
appropriate for the Permitted Use during the following hours (collectively, the
"Building Hours"): 8:00 a.m. to 6:00 p.m., Monday through Friday, and 8:00 a.m.
to 1:00 p.m. on Saturday, exclusive of Holidays, (iii) reasonable janitorial
service (including regular trash removal from the Premises), in a manner
comparable to janitorial service provided in similar office buildings in the
Chantilly, Virginia area, (iv) hot and cold water from points of supply, (v)
adequate supplies for restrooms located in the Common Area, (vi) elevator
service, provided that Landlord shall have the right to remove such elevators
from service as may be required for moving, freight or for maintaining the
elevators or the Building or for security reasons, and (vii) replacement of
building standard light bulbs. Tenant shall have access to the Premises seven
(7) days per week, twenty-four (24) hours per day, every day of the year. The
cost of all services provided by Landlord hereunder shall be included within
Operating Expenses, unless charged directly (and not as part of Operating
Expenses) to Tenant or another

                                       23
<PAGE>   24

tenant of the Building, or otherwise excluded from Operating Expenses under
Article 7. The foregoing services shall be furnished by Landlord and reimbursed
by Tenant as part of Operating Expenses; provided, however, that Landlord shall
be under no responsibility or liability for failure, defect or interruption in
such services caused by Force Majeure, breakage, accident, strikes, repairs or
for any other cause or causes beyond the control of Landlord, nor in any event
for any indirect or consequential damages; and failure or omission on the part
of Landlord to furnish such service shall not be construed as an eviction of
Tenant, nor work an abatement of Rent, nor render Landlord liable in damages,
nor release Tenant from prompt fulfillment of any of the covenants under this
Lease. Landlord shall use commercially reasonable efforts to cause the
restoration of services in the event of any failure, delay or diminution
described in this Article 18.1. Notwithstanding the foregoing, if as a result of
the failure or delay of services (i) not due to the acts of Tenant or its
Agents, (ii) due to circumstances within the reasonable control of Landlord, and
(iii) the Premises cannot be used by Tenant for the normal conduct of its
business for a period of three (3) consecutive days, then Rent shall abate for
the portion(s) of the Premises rendered unusable commencing after said 3-day
period and continuing until the condition(s) causing such untenantability is
remedied. Landlord may comply with voluntary controls or guidelines promulgated
pursuant to any Legal Requirements relating to the use or conservation of
energy, water, gas, light, or electricity or the reduction of automobile or
other emissions without creating any liability of Landlord to Tenant under this
Lease. Landlord shall not be responsible if the normal operation of the Building
air-conditioning system shall fail to provide conditioned air within comfortable
temperatures levels (A) in any portions of the Premises which have a connected
electrical load for all purposes (including lighting and power) or which have a
human occupancy in excess of the average electrical load and human occupancy
factors for which the Building air-conditioning system is designed, (B) because
of Alterations made by or on behalf of Tenant, (C) in any portions of the
Premises exposed to direct sunlight in which Tenant fails to keep the window
treatments closed, or (D) because of the failure by Tenant or its Agents to use
the HVAC system in the manner in which it was designed to be used. Tenant agrees
to observe and comply with all reasonable rules from time to time prescribed by
Landlord for the proper functioning and protection of the HVAC systems in the
Building.

         18.2 After-Hours Services to the Premises. If Tenant requires or
requests that the services to be furnished by Landlord (except building standard
electricity and elevator service) be provided during periods in addition to the
Building Hours, then Tenant shall obtain Landlord's consent thereto and, if such
consent is granted, shall pay upon demand Landlord's additional expenses
resulting therefrom. Landlord may, from time to time during the Term, set a per
hour charge for after-hours service which shall include the cost of utility,
service, labor costs, administrative costs and a cost for depreciation of the
equipment used to provide such after-hours service.

         18.3 Excess Utility Charges. If Tenant's consumption of electricity
exceeds normal office power requirements, or if Tenant's electrical consumption
consistently occurs beyond Building Hours, Landlord, in its reasonable
discretion, acting in good faith, may (i) install a separate electric meter or
submeter for the Premises at Tenant's cost, or (ii) bill Tenant for any usage of
electric power (a) consistently occurring outside of Building Hours, or (b) that
exceeds normal office building requirements at the same cost paid by Landlord
for power usage. If Landlord installs a meter for the Premises, Tenant shall
then pay the cost of electricity it

                                       24
<PAGE>   25

consumes directly to the electric company, and Landlord shall make an
appropriate good faith adjustment to Tenant's Proportionate Share of Operating
Expenses to reflect such separate metering. If Landlord installs a submeter for
the Premises, Tenant shall be billed periodically by Landlord based upon such
consumption, and Landlord shall make an appropriate good faith adjustment to
Tenant's Proportionate Share of Operating Expenses to reflect such submetering.
Tenant shall pay each invoice that it receives from Landlord under this
subarticle within 10 days after receipt. As used in this Article 18.3, the
phrase "normal office power requirements" means power requirements sufficient to
operate a modern office in which each employee uses a personal computer.

         18.4 Year 2000 Compliance. Landlord warrants to Tenant that the
Building's customary systems and services are designed to be operational during
and after the calendar year 2000, and that the Building's customary systems and
services will operate during those time periods without any interruption of
critical services relating to year 2000 incompatibility. Notwithstanding
anything to the contrary in this Lease, if (i) Landlord breaches the foregoing
warranty, and (ii) as a result of this breach, services to the Premises are
interrupted and Tenant is unable to use the Premises in whole or in part for
more than three (3) continuous business days, then, starting with the fourth
(4th) business day and continuing until Tenant is again able to use the
Premises, Monthly Base Rent and Additional Rent shall be proportionately abated
to the extent that the Premises are unusable. This rent abatement shall be
Tenant's sole remedy against Landlord for Landlord's breach of the warranty
provided in this Article 18.4.

                                   ARTICLE 19
                              LIABILITY OF LANDLORD

         19.1 No Liability. Except where due to Landlord's gross negligence or
willful misconduct. Landlord shall not be liable to Tenant or its Agents for,
and Tenant, for itself and its Agents, does hereby release Landlord and its
Agents from liability, for, any damage, compensation or claim arising from (i)
the necessity of repairing any portion of the Premises, (ii) any interruption in
the use of the Premises or the Common Area for any reason including any
interruption or suspension of utility service, (iii) fire or other casualty or
personal or property injury, damage or loss resulting from the use or operation
(by Landlord, Tenant, or any other person whomsoever) of the Premises, (iv) the
termination of this Lease, (v) robbery, assault or theft, or (vi) any leakage in
the Premises from water, rain, snow or other cause whatsoever. Except as
otherwise provided in Article 18 regarding abatement of Rent, no such occurrence
shall give rise to diminution or abatement of Rent or constructive eviction.
Notwithstanding the foregoing, any goods, automobiles, property or personal
effects stored or placed by Tenant or its Agents in or about the Premises, shall
be at the sole risk of Tenant; Tenant hereby expressly waives its right to
recover against Landlord and its Agents therefor. Tenant hereby waives any claim
it might have against Landlord or its Agents for any consequential damages or
business losses sustained by Tenant arising out of the loss or damage to any
person or property of Tenant, or any interruption in the use of the Premises,
for any reason. Tenant acknowledges its obligation to insure against such losses
and damages.

                                       25
<PAGE>   26

         19.2 Indemnity.

              (i) Tenant shall indemnify, defend, protect and hold Landlord and
its Agents harmless from and against any and all damage, claim, liability, cost
or expense (including attorneys' or other professionals' fees) of every kind and
nature (including those arising from any injury or damage to any person,
property or business) incurred by or claimed against Landlord or its Agents,
directly or indirectly, as a result of, arising from or in connection with (a)
Tenant's or its Agents' use and occupancy of the Premises; (b) Tenant's breach
of this Lease; or (c) any act, omission or negligence of Tenant or its Agents.

             (ii) Subject to the limitations on Landlord's liability otherwise
provided in this Lease, Landlord shall indemnify, defend, protect and hold
Tenant and its Agents harmless from and against any and all damage, claim,
liability, cost or expense (including attorneys' or other professionals' fees)
of every kind and nature (including those arising from any injury or damage to
any person, property or business) incurred by or claimed against Tenant or its
Agents, directly or indirectly, as a result of, arising from or in connection
with the gross negligence or willful misconduct of Landlord or its Agents.

         19.3 Limitation on Recourse. Notwithstanding anything contained in this
Lease to the contrary, the obligations of Landlord under this Lease (including
any actual or alleged breach or default by Landlord) do not constitute personal
obligations of the individual partners, directors, officers, shareholders,
trustees, advisors or agents of Landlord or Landlord's partners, and Tenant
shall not seek recourse against the individual partners, directors, officers or
shareholders, trustees, advisors or agents of Landlord or Landlord's partners,
or any of their personal assets for satisfaction of any liability with respect
to this Lease. In addition, in consideration of the benefits accruing hereunder
to Tenant and notwithstanding anything contained in this Lease to the contrary,
Tenant hereby covenants and agrees for itself and all of its successors and
assigns that the liability of Landlord for its obligations under this Lease
(including any liability as a result of any actual or alleged failure, breach or
default hereunder by Landlord), shall be limited solely to, and Tenant's and its
successors' and assigns' sole and exclusive remedy shall be against Landlord's
interest in the Building, the Complex and Land and/or such respective
partnership interests or assets and proceeds therefrom, and no other assets of
Landlord. In the event that the original Landlord hereunder, or any successor
owner of the Building, shall sell or convey the Building, all liabilities and
obligations on the part of the original Landlord, or such successor owner, under
this Lease occurring thereafter shall terminate as of the day of such sale, and
thereupon all such liabilities and obligations shall be binding on the new
owner.

                                   ARTICLE 20
                              RULES AND REGULATIONS

         20.1 General. Tenant and its Agents shall at all times abide by and
observe the Rules and Regulations and any amendments thereto that may be
reasonably promulgated from time to time by Landlord for the operation and
maintenance of the Building, the Complex and the Common Area and the Rules and
Regulations shall be deemed to be covenants of the Lease to be performed and/or
observed by Tenant. Nothing contained in this Lease shall be construed

                                       26
<PAGE>   27

to impose upon Landlord any duty or obligation to enforce the Rules and
Regulations, or the terms or provisions contained in any other lease, against
any other tenant of the Building or the Complex; provided, however, that
Landlord shall enforce the Rules and Regulations in a nondiscriminatory manner.
Landlord shall not be liable to Tenant for any violation by any party of the
Rules and Regulations or the terms of any other Building lease. If there is any
inconsistency between this Lease and the Rules and Regulations, this Lease shall
govern. Landlord reserves the right to amend and modify the Rules and
Regulations as it deems necessary. The current Rules and Regulations are
attached hereto as Exhibited and made a part hereof.

                                   ARTICLE 21
                             DAMAGE AND CONDEMNATION

         21.1 Damage to the Premises. If the Premises shall be damaged by fire
or other cause without the fault or negligence of Tenant or its Agents,
Landlord shall diligently and as soon as practicable after such damage occurs
(taking into account the time necessary to effect a satisfactory settlement with
any insurance company involved and any delays beyond the direct control of
Landlord) repair such damage to the Premises (excluding the Tenant's Property)
at the expense of Landlord; provided, however, that Landlord's obligation to
repair such damage shall not exceed the proceeds of insurance available to
Landlord (reduced by any proceeds retained pursuant to the rights of Mortgagee).
Notwithstanding the foregoing, (i) if the Premises or the Building is damaged by
fire or other cause to such an extent that, in Landlord's or Tenant's reasonable
judgment, the damage cannot be substantially repaired within two hundred (200)
days after the date of such damage, then within sixty (60) days from the date of
such damage, either Landlord or Tenant may terminate this Lease by written
notice to the other party, or (ii) if the Premises are damaged during the last
Lease Year, then within thirty (30) days from the date of such damage, Landlord
or Tenant may terminate this Lease by written notice to the other party. If
either Landlord or Tenant terminates this Lease, the Rent shall be apportioned
and paid to the date of such termination. If neither Landlord nor Tenant so
elects to terminate this Lease but the damage required to be repaired by
Landlord is not repaired within two hundred (200) days from the date of such
damage (such two hundred (200) day period to be extended by the period of any
delay outside the direct control of Landlord plus a reasonable period for a
satisfactory settlement with any insurance company involved), Tenant, within
thirty (30) days from the expiration of such two hundred (200) day period (as
the same may be extended), may terminate this Lease by written notice to
Landlord. During the period that Tenant is deprived of the use of the damaged
portion of the Premises, and provided such damage is not the consequence of the
fault or negligence of Tenant or its Agents, Base Rent and Tenant's
Proportionate Share shall be reduced by the ratio that the rentable square
footage of the Premises damaged bears to the total rentable square footage of
the Premises before such damage; provided, further, that if (i) a Substantial
Part of the Premises is damaged, (ii) the damage does not result from the fault
or negligence of Tenant or its Agents, and (iii) Tenant does not use any of the
Premises, then Rent shall fully abate during the period that Tenant is deprived
of the use of the Premises. Notwithstanding anything herein to the contrary,
Landlord shall not be required to rebuild, replace or repair of the Tenant's
Property. If neither party terminates this Lease as aforesaid, Tenant shall be
required to repair or replace the Tenant's Property.

                                       27
<PAGE>   28

         21.2 Condemnation. If the whole or a Substantial Part of the Premises
or the Building shall be taken or condemned by any governmental or
quasi-governmental authority for any public or quasi-public use or purpose
(including sale trader threat of such a taking), then the Term shall cease and
terminate as of the date when title vests in such governmental or
quasi-governmental authority, and Rent shall be prorated to the date when title
vests in such governmental or quasi-governmental authority. If less than a
Substantial Part of the Premises is taken or condemned by any governmental or
quasi-governmental authority for any public or quasi-public use or purpose
(including sale under threat of such a taking), Base Rent and Tenant's
Proportionate Share shall be reduced by the ratio that the portion so taken
bears to the rentable square footage of the Premises before such taking,
effective as of the date when title vests in such governmental or
quasi-governmental authority, and this Lease shall otherwise continue in full
force and effect; provided, however, that if such taking materially affects the
Premises or access thereto so as to render the Premises unusable, Tenant may
terminate this Lease upon notice to Landlord given within sixty (60) days after
the taking occurs. Tenant shall have no claim against Landlord (or otherwise) as
a result of such taking, and Tenant hereby agrees to make no claim against the
condemning authority, for any portion of the amount that may be awarded as
compensation or damages as a result of such taking; provided, however, that
Tenant may, to the extent allowed by law, claim an award for moving expenses and
for the taking of any of Tenant's Property (other than its leasehold interest in
the Premises) which does not, under the terms of this Lease, become the property
of Landlord at the termination hereof, as long as such claim is separate and
distinct from any claim of Landlord and does not diminish Landlord's award.
Tenant hereby assigns to Landlord any right and interest it may have in any
award for its leasehold interest in the Premises.

                                   ARTICLE 22
                                     DEFAULT

         22.1 Events of Default. Each of the following shall constitute an Event
of Default: (i) Tenant fails to pay Rent within five (5) days after written
notice from Landlord; (ii) Tenant fails to observe or perform any other term,
condition or covenant herein binding upon or obligating Tenant within thirty
(30) days after notice from Landlord; provided, however, that if such failure
cannot be cured within said 30-day period, Tenant shall have a reasonable period
of time in which to satisfy or cure said breach conditioned upon Tenant promptly
commencing to cure such breach and diligently pursuing the cure to completion,
(iii) Tenant abandons or vacates the Premises (other than the Sublet Space);
(iv) Tenant or any Guarantor makes or consents to a general assignment for the
benefit of creditors or a common law composition of creditors, or a receiver of
the Premises or all or substantially all of Tenant's or Guarantor's assets is
appointed; or (v) a transfer in violation of Article 11 herein.

         22.2 Landlord's Remedies. Upon the occurrence of an Event of Default,
Landlord, at its option, without further notice or demand to Tenant, may in
addition to all other rights and remedies provided in this Lease, at law or in
equity:

              (i) Terminate this Lease and Tenant's right of possession of the
Premises, and recover all damages to which Landlord is entitled under law,
specifically including all of Landlord's reasonable expenses of reletting
(including market rental concessions to new

                                       28
<PAGE>   29

tenants, repairs, Alterations, legal fees and brokerage commissions). If
Landlord elects to terminate this Lease, every obligation of the parties shall
cease as of the date of such termination, except that Tenant shall remain liable
for payment of Rent and performance of all other terms and conditions of this
Lease to the date of termination.

              (ii) Terminate Tenant's right of possession of the Premises
without terminating this Lease, in which event Landlord shall use commercially
reasonable efforts to relet the Premises or any part thereof for such rent and
term and upon such other conditions as are acceptable to Landlord. For purposes
of such reletting, Landlord is authorized to redecorate, repair, alter and
improve the Premises to the extent necessary in Landlord's sole discretion.
Until Landlord relets the Premises, Tenant shall remain obligated to pay Rent to
Landlord as provided in this Lease. If and when the Premises are relet and its
sufficient sum is not realized from such reletting after payment of all
Landlord's reasonable expenses of reletting (including rental concessions to new
tenants, repairs, Alterations, legal fees and brokerage commissions) to satisfy
the payment of Rent due under this Lease for any month. Tenant shall pay
Landlord any such deficiency upon demand. Tenant agrees that Landlord may file
suit to recover any sums due Landlord under this Article from time to time and
that such suit or recovery of any amount due Landlord shall not be any defense
to any subsequent action brought for any amount not previously reduced to
judgment in favor of Landlord.

              (iii) Terminate this Lease and Tenant's right of possession of the
Premises, and recover from Tenant the net present value of the Rent due from the
date of termination until the Expiration Date, discounted at the lesser of the
Interest Rate as of the date of termination or seven percent (7%) per annum.

              (iv) Re-enter and repossess the Premises and remove all persons
and effects therefrom, by summary proceeding, ejectment or other legal action.
Landlord shall have no liability by reason of any such re-entry, repossession or
removal.

              (v) Recover from Tenant, to the extent permitted under the laws of
the Commonwealth of Virginia, the value and/or cost of all unamortized
concessions to Tenant under this Lease.

         22.3 Rights Upon Possession. If Landlord takes possession pursuant to
this Article, upon terminating this Lease, Landlord may, at its option, enter
into the Premises. remove Tenant's Alterations, signs, personal property,
equipment and other evidences of tenancy, and store them at Tenant's risk and
expense or dispose of them as Landlord may see fit, and take and hold possession
of the Premises; provided, however, that if Landlord elects to take possession
only without terminating this Lease, such entry, and possession shall not
terminate this Lease or release Tenant or any Guarantor, in whole or in part,
from the obligation to pay the Rent reserved hereunder for the full Term or from
any other obligation under this Lease or any guaranty thereof.

         22.4 No Waiver. If Landlord shall institute proceedings against Tenant
and a compromise or settlement thereof shall be made, the same shall not
constitute a waiver of any other covenant, condition or agreement herein
contained, nor of any of Landlord's rights

                                       29
<PAGE>   30

hereunder. No waiver by Landlord of any breach shall operate as a waiver of such
covenant, condition or agreement, or operate as a waiver of such covenant,
condition or agreement itself, or of any subsequent breach thereof. No payment
of Rent by Tenant or acceptance of Rent by Landlord shall operate as a waiver of
any breach or default by Tenant under this Lease. No payment by Tenant or
receipt by Landlord of a lesser amount than the monthly installment of Rent
herein stipulated shall be deemed to be other than a payment on account of the
earliest unpaid Rent, nor shall any endorsement or statement on any check or
communication accompanying a check for the payment of Rent be deemed an accord
and satisfaction, and Landlord may accept such check or payment without
prejudice to Landlord's right to recover the balance of such Rent or to pursue
any other remedy provided in this Lease. No re-entry by Landlord, and no
acceptance by Landlord of keys from Tenant, shall be considered an acceptance of
a surrender of the Lease.

         22.5 Right of Landlord to Cure Tenant's Default. If an Event of Default
shall occur, then Landlord may (but shall not obligated to) make such payment or
do such act to cure the Event of Default, and charge the amount of the expense
thereof, together with interest thereon at the Interest Rate, to Tenant. Such
payment shall be due and payable upon demand: however, the making of such
payment or the taking of such action by Landlord shall not be deemed to cure the
Event of Default or to stop Landlord from the pursuit of any remedy to which
Landlord would otherwise be entitled. Any such payment made by Landlord on
Tenant's behalf shall bear interest until paid at the Interest Rate.

                                   ARTICLE 23
                                    MORTGAGES

         23.1 Subordination. This Lease and Tenant's interest hereunder shall
have priority over, and be senior to, the lien of any Mortgage made by Landlord
after the date of this Lease. However, if at any time or from time to time
during the Term, a mortgagee or prospective mortgagee ("Mortgagee") requests
that this Lease be subject and subordinate to its mortgage or deed or trust or
similar lien ("Mortgage"), and if Landlord consents to such subordination, this
Lease and Tenant's interest hereunder shall be subject and subordinate to the
lien of such Mortgage and to all renewals, modifications, replacements,
consolidations and extensions thereof and to any and all advances made
thereunder and the interest thereon. Tenant agrees that, within ten (10)
business days after receipt of a written request therefor from Landlord, it
will, from time to time, execute and deliver any reasonable instrument or other
document required by any such Mortgagee to subordinate this Lease and its
interest in the Premises to the lien of such Mortgage; provided, however, that
Tenant shall not be required to execute any such instrument or other document
unless it contains a "non-disturbance" provision (i.e., a clause providing that,
in the event of a foreclosure or deed in lieu thereof, Mortgagee will not
disturb this Lease or Tenant's occupancy of the Premises as long as Tenant is
not in default hereunder). If, at any time or from time to time during the Term,
a Mortgagee of a Mortgage made prior to the date of this Lease shall request
that this Lease have priority over the lien of such Mortgage, and if Landlord
consents thereto, this Lease shall have priority over the lien of such Mortgage
and all renewals, modifications, replacements, consolidations and extensions
thereof and all advances made thereunder and the interest thereon, and Tenant
shall, within ten (10) business days after receipt of a request therefor from
Landlord, execute, acknowledge and deliver any and all reasonable

                                       30
<PAGE>   31

documents and instruments confirming the priority of this Lease. In any event,
however, if this Lease shall have priority over the lien of a first Mortgage,
this Lease shall not become subject or subordinate to the lien of any
subordinate Mortgage, and Tenant shall not execute any subordination documents
or instruments for any subordinate Mortgagee, without the written consent of the
first Mortgagee.

         This Lease and Tenant's interest hereunder shall be subject and
subordinate to each and every, ground or underlying lease hereafter made of the
Building, the Complex or the Land, and to all renewals, modifications,
consolidations, replacements and extensions thereof. Tenant agrees that, within
ten (10) business days after receipt of request therefor from Landlord, it will,
from time to time, execute, acknowledge and deliver any instrument or other
document required by any such lessor to subordinate this Lease and its interest
in the Premises to such ground or underlying lease.

         23.2 Mortgagee Protection. Tenant agrees to give any Mortgagee by
certified mail. return receipt requested, a copy of any notice of default served
upon Landlord, provided that before such notice Tenant has been notified in
writing of the address of such Mortgagee. Tenant further agrees that if Landlord
shall have failed to cure such default within the time provided for in this
Lease, then the Mortgagee shall have an additional ten (10) business days within
which to cure such default; provided, however, that if such default cannot be
reasonably cured within that time. then such Mortgagee shall have such
additional time as may be necessary to cure such default so long as Mortgagee
has commenced and is diligently pursuing the remedies necessary, to cure such
default (including the commencement of foreclosure proceedings, if necessary),
in which event Tenant shall not exercise any remedies for default while such
remedies are being so diligently pursued. In the event of the sale of the Land.
the Complex or the Building, by foreclosure or deed in lieu thereof, the
Mortgagee or purchaser at such sale shall be responsible for the return of the
Security Deposit only to the extent that such Mortgagee or purchaser actually
received the Security Deposit.

         23.3 Modification Due to Financing. If, in connection with obtaining
construction or permanent financing for the Premises, the Building, the Complex
or the Land, any lender (or Mortgagee) shall request reasonable modifications of
this Lease as a condition to such financing, Tenant shall promptly execute a
modification of this Lease, provided such modifications do not materially
increase the financial obligations of Tenant hereunder or materially adversely
affect the leasehold interest hereby created or Tenant's reasonable use and
enjoyment of the Premises. Tenant and any Guarantor shall each, prior to
execution and annually throughout the Term upon request, provide such financial
information and documentation about itself to Landlord or Mortgagee as may be
reasonably requested.

         23.4 Attornment. In the event of (i) a transfer of Landlord's interest
in the Premises, (ii) the termination of any ground or underlying lease of the
Complex, the Building or the Land, or (iii) the purchase of the Complex, the
Building or Landlord's interest therein in a foreclosure sale or by deed in lieu
of foreclosure under any Mortgage or pursuant to a power of sale contained in
any Mortgage, then in any of such events Tenant shall, at the request of
Landlord or Landlord's successor in interest, attorn to and recognize the
transferee or purchaser of Landlord's interest or the lessor under the
terminated ground or underlying lease, as the case

                                       31
<PAGE>   32

may be, as Landlord under this Lease for the balance then remaining of the Term,
and thereafter this Lease shall continue as a direct lease between such lessor,
transferee or purchaser, as "Landlord," and Tenant, as "Tenant," except that
such lessor, transferee or purchaser shall not be liable for any act or omission
of Landlord prior to such lease termination or prior to its succession to title,
nor be subject to any offset, defense or counterclaim accruing prior to such
lease termination or prior to such succession to title, nor be bound by any
payment of Base Rent or Additional Rent prior to such lease termination or prior
to such succession to title for more than one month in advance. Tenant shall,
upon request by Landlord or the transferee or purchaser of Landlord's interest
or the lessor under the termination ground or underlying lease, as the case may
be, execute and deliver an instrument or instruments confirming the foregoing
provisions of this Article. Tenant hereby waives the provisions of any present
or future law or regulation which gives or purports to give Tenant any right to
terminate or otherwise adversely affect this Lease, or the obligations of Tenant
hereunder, upon or as a result of the termination of any such ground or
underlying lease or the completion of any such foreclosure and sale.

         23.5 Non-Disturbance Agreement. Notwithstanding anything to the
contrary in this Article, Landlord shall (i) obtain a subordination, attornment
and non-disturbance agreement (an "SNDA") for the benefit of Tenant from
Landlord's existing Mortgagee, and (ii) use reasonable efforts to obtain a SNDA
for the benefit of Tenant from any future Mortgagees of Landlord. Each SNDA
shall be on the Mortgagee's standard form. The form of SNDA to be used with
Landlord's current Mortgagee is attached hereto as Exhibit H.

                                   ARTICLE 24
                             SURRENDER; HOLDING OVER

         24.1 Surrender of the Premises. Tenant shall peaceably surrender the
Premises to Landlord on the Expiration Date or earlier termination of this
Lease, in broom-clean condition and in as good condition as when Tenant took
possession, including the repair of any damage to the Premises caused by the
removal of any of Tenant's personal' property. or trade fixtures from the
Premises, except for reasonable wear and tear and loss by fire or other
casualty' not caused by Tenant or its Agents. Any of Tenant's personal property
left on or in the Premises. the Building, the Complex or the Common Area after
the Expiration Date or earlier termination of this Lease shall be deemed to be
abandoned, and, at Landlord's option, title shall pass to Landlord under this
Lease.

         24.2 Holding Over. In the event that Tenant shall not immediately
surrender the Premises to Landlord on the Expiration Date or earlier termination
of this Lease, Tenant shall be deemed to be a month to month tenant upon all of
the terms and provisions of this Lease, except the monthly Base Rent shall be
one hundred fifty percent (150%) of the monthly Base Rent in effect during the
last month of the Term. Notwithstanding the foregoing, if Tenant shall hold over
after the Expiration Date or earlier termination of this Lease, and Landlord
shall desire to regain possession of the Premises, then Landlord may upon
reasonable prior written notice forthwith re-enter and take possession of the
Premises. Tenant shall indemnify Landlord against all liabilities and damages
sustained by Landlord by reason of such retention of possession.

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<PAGE>   33

                                   ARTICLE 25
                                 QUIET ENJOYMENT

         25.1 General. Landlord covenants that if Tenant shall pay Rent and
perform all of the terms and conditions of this Lease to be performed by Tenant,
Tenant shall during the Term peaceably and quietly occupy and enjoy possession
of the Premises without molestation or hindrance by Landlord or any successor
party' claiming through or under Landlord, subject to the provisions of this
Lease and any Mortgage to which this Lease is subordinate and easements,
conditions and restrictions of record affecting the Land.

                                   ARTICLE 26
                     COVENANTS REGARDING HAZARDOUS MATERIALS

         26.1 Definition. As used in this Article, the term "Hazardous Material"
means any flammable items, explosives, radioactive materials, hazardous or toxic
substances, material or waste or related materials, including any substances
defined as or included in the definition of "hazardous substances," "hazardous
wastes," "infectious wastes," "hazardous materials" or "toxic substances" now or
subsequently regulated under any federal, state or local laws, regulations or
ordinances including oil, petroleum-based products, paints, solvents, lead,
cyanide, DDT, printing inks, acids, pesticides, ammonia compounds and other
chemical products, asbestos, PCBs and similar compounds, and including any
different products and materials which are subsequently found to have adverse
effects on the environment or the health and safety, of persons.

         26.2 General Prohibition. To the best of Landlord's actual knowledge,
there are no Hazardous Materials on or about the Building or the Premises.
Neither Landlord nor Tenant shall cause or permit any Hazardous Material to be
generated, produced, brought upon, used, stored, treated. discharged, released,
spilled or disposed of on, in, under or about the Premises, the Building, the
Complex or the Land by Landlord or Tenant or their respective Agents, sublessees
or assignees. Each party shall indemnify, defend and hold the other party
harmless from and against any and all actions (including remedial or enforcement
actions of any kind, administrative or judicial proceedings, and orders or
judgments arising out of or resulting therefrom), costs, claims, damages
(including punitive damages), expenses (including attorneys', consultants' and
experts' fees, court costs and amounts paid in settlement of any claims or
actions), fines, forfeitures or other civil, administrative or criminal
penalties. injunctive or other relief (whether or not based upon personal or
bodily injury, property damage, or contamination of, or adverse effects upon,
the environment, water tables or natural resources), liabilities or losses
arising from a breach of this prohibition by the other party, its Agents,
sublessees or assignees. Landlord recognizes and acknowledges that Tenant or its
Agents may use and store within the Building normal and customary, quantities of
office and cleaning supplies which Tenant covenants to dispose of in accordance
with all applicable Legal Requirements.

         26.3 Notice. In the event that Hazardous Materials are discovered upon,
in, or under the Premises, the Building, the Complex or the Land and any
governmental agency or entity having jurisdiction over the Premises, the
Building, the Complex or the Land requires the removal of such Hazardous
Materials, Tenant shall be responsible for removing those Hazardous

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<PAGE>   34

Materials arising out of or related to the use or occupancy of the Premises, by
Tenant or its Agents, affiliates, sublessees or assignees but not those of its
predecessors. Notwithstanding the foregoing, Tenant shall not take any remedial
action in or about the Premises, the Building, the Complex or the Land without
first notifying Landlord of Tenant's intention to do so and affording Landlord
the opportunity to protect Landlord's interest with respect thereto. Tenant
immediately shall notify Landlord in writing of: (i) any spill, release,
discharge or disposal of any Hazardous' Material in, on or under the Premises,
the Building, the Complex, the Land or any portion thereof, (ii) any
enforcement, cleanup, removal or other governmental or regulatory action
instituted, contemplated, or threatened (if Tenant has notice thereof) pursuant
to any Hazardous Materials Laws; (iii) any claim made or threatened by any
person against Tenant, the Premises, the Building, the Complex or the Land
relating to damage, contribution, cost recovery, compensation, loss or injury,
resulting from or claimed to result from any Hazardous Materials; and (iv) any
reports made to any governmental agency or entity arising out of or in
connection with any Hazardous Materials in, on, under or about or removed from
the Premises, the Building, the Complex or the Land, including any complaints,
notices, warnings, reports or asserted violations in connection therewith.
Tenant also shall supply to Landlord as promptly as possible, and in any event
within five (5) business days after Tenant first receives or sends the same,
copies of all claims, reports, complaints, notices, warnings or asserted
violations relating in any way to the Premises, the Building, the Complex, the
Land or Tenant's use or occupancy thereof.

         26.4 Survival. The respective rights and obligations of Landlord and
Tenant under this Article 26 shall survive the expiration or earlier termination
of this Lease.

                                   ARTICLE 27
                                  MISCELLANEOUS

         27.1 No Representations by Landlord. Tenant acknowledges that neither
Landlord or its Agents nor any broker has made any representation or promise
with respect to the Premises, the Building, the Complex, the Land or the Common
Area, except as herein expressly set forth, and no rights, privileges, easements
or licenses are acquired by Tenant except as herein expressly set forth.

         27.2 No Partnership. Nothing contained in this Lease shall be deemed or
construed to create a partnership or joint venture of or between Landlord and
Tenant, or to create any other relationship between Landlord and Tenant other
than that of landlord and tenant.

         27.3 Brokers. Landlord recognizes Brokers as the sole brokers procuring
this Lease and shall pay Brokers a commission therefor pursuant to a separate
agreement between Brokers and Landlord. Landlord and Tenant each represents and
warrants to the other that it has not employed any broker, agent or finder other
than Brokers relating to this Lease. Landlord shall indemnify and hold Tenant
harmless, and Tenant shall indemnify and hold Landlord harmless, from and
against any claim for brokerage or other commission arising from or out of any
breach of the indemnitor's representation and warranty.

                                       34
<PAGE>   35

         27.4 Estoppel Certificate. Tenant shall, without charge, at any time
and from time to time, within ten (10) business days after request therefor by
Landlord, Mortgagee, or any purchaser of the Land, the Complex or the Building
execute, acknowledge and deliver to such requesting party a written estoppel
certificate certifying, as of the date of such estoppel certificate, the
following: (i) that this Lease is unmodified and in full force and effect (or if
modified, that the Lease is in full force and effect as modified and setting
forth such modifications); (ii) that the Term has commenced (and setting forth
the commencement date and expiration date); (iii) that Tenant is presently
occupying the Premises; (iv) the amounts of rent currently due and payable by
Tenant; (v) that any alterations required by the Lease to have been made by
Landlord have been made to the satisfaction of Tenant; (vi) that there are no
existing set-offs, charges, liens, claims or defenses against the enforcement of
any right hereunder; (vii) that no rent (except the first installment thereof)
has been paid more than thirty (30) days in advance of its due date; (viii) that
Tenant has no knowledge of any then uncured default by Landlord of its
obligations under this Lease (or, if Tenant has such knowledge, specifying the
same in detail); (ix) that Tenant is not in default; (x) that the address to
which notices to Tenant should be sent is as set forth in the Lease (or, if not,
specifying the correct address); and (xi) any other certifications reasonably
requested by Landlord. Any such estoppel certificate delivered pursuant to this
Article may be relied upon by any mortgagee, beneficiary, purchaser or
prospective purchaser of any portion of the Land, as well as their assignees.

         27.5 Financial Statements. Within five (5) days after request by
Landlord, but not more often than once in any Lease Year, Tenant shall deliver
to Landlord financial statements of Tenant for its most recently ended fiscal
year and interim financial statements for its most recently ended quarter. To
the extent available, such financial statements shall be audited but if not
available shall be certified as true, correct and complete by Tenant's chief
financial officer.

         27.6 Waiver of Jury Trial. Landlord and Tenant hereby waive trial by
jury in any action, proceeding or counterclaim brought by either party against
the other with respect to any matter whatsoever arising out of or in any way
connected with this Lease, the relationship of Landlord and Tenant hereunder or
Tenant's use or occupancy of the Premises. In the event Landlord commences any
proceedings for nonpayment of Rent, Tenant shall not interpose any counterclaims
other than compulsory counterclaims. This shall not, however, be construed as a
waiver of Tenant's right to assert such claims in any separate action brought by
Tenant.

         27.7 Notices. All notices or other communications hereunder shall be in
writing and shall be deemed duly given if delivered in person or upon the
earlier of receipt, if mailed by certified or registered mail, or three (3)
business days after certified or registered mailing, return receipt requested,
postage prepaid, addressed and sent, if to Landlord to Landlord's Address
specified in Article 1.18 or if to Tenant to Tenant's Address specified in
Article 1.19. Landlord and Tenant may from time to time by written notice to the
other designate another address for receipt of future notices.

         27.8 Invalidity of Particular Provisions. If any provisions of this
Lease or the application thereof to any person or circumstances shall to any
extent be invalid or unenforceable, the remainder of this Lease, or the
application of such provision to persons or

                                       35
<PAGE>   36

circumstances other than those to which it is invalid or unenforceable, shall
not be affected thereby, and each provision of this Lease shall be valid and be
enforced to the full extent permitted by law.

         27.9 Gender and Number. All terms and words used in this Lease.
regardless of the number or gender in which they are used, shall be deemed to
include any other number or gender as the context may require.

         27.10 Benefit and Burden. Subject to the provisions of Article 11 and
except as otherwise expressly provided, the provisions of this Lease shall be
binding upon, and shall inure to the benefit of, the parties hereto and each of
their respective representatives, heirs, successors and assigns.

         27.11 Entire Agreement. This Lease (which shall be deemed to include
the Exhibits attached hereto, as well as the Agreement) contains and embodies
the entire agreement of the parties hereto, and no representations, inducements
or agreements, oral or otherwise, between the parties not contained in this
Lease shall be of any force or effect. This Lease (other than the Rules and
Regulations, which may be changed from time to time as provided herein) may not
be modified, changed or terminated in whole or in part in any manner other than
by an agreement in writing duly signed by Landlord and Tenant.

         27.12 Attorney's Fees. If, as a result of any default of Landlord or
Tenant in its performance of any of the provisions of this Lease, the other
party uses the services of an attorney in order to secure compliance with such
provisions or recover damages therefor, or to terminate this Lease or evict
Tenant, the non-prevailing party shall reimburse the prevailing party upon
demand for any and all reasonable attorneys' fees and reasonable expenses so
incurred by the prevailing party.

         27.13    Governing Law.  This Lease is governed by the laws of the
Commonwealth of Virginia.

         27.14 Force Majeure. Except for Tenant's obligations to pay Rent
hereunder. neither Landlord nor Tenant shall be required to perform any of its
obligations under this Lease, nor shall such party be liable for loss or damage
for failure to do so, nor shall the other party thereby be released from any of
its obligations under this Lease, where such failure by the non-performing party
arises from or through acts of God, strikes, lockouts, labor difficulties,
explosions, sabotage, accidents, riots, civil commotion, acts of war, results of
any warfare or warlike conditions in this or any foreign country, fire or
casualty, Legal Requirements, energy shortage or other causes beyond the
reasonable control of the non-performing party, unless such loss or damage
results from the willful misconduct or gross negligence of the non-performing
party.

         27.15 Headings. Captions and headings are for convenience of reference
only.

         27.16 Exhibits. All Exhibits attached to this Lease are hereby
incorporated in this Lease as though set forth at length herein.

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<PAGE>   37

         27.17 Transportation Management. Tenant shall fully comply with all
present or future programs implemented by the Association or Landlord or
required by any County, State or Federal Legal requirements (including the
Covenants), to manage parking, transportation, air pollution or emissions, or
traffic in and around the Building or the metropolitan area in which the
Building is located.

         27.18 Interpretation. "Include," "includes," and "including" mean
considered as part of a larger group, and not limited to the items recited.
"Shall" means "is obligated to." "May" means "is permitted to." The necessary
grammatical changes required to make the provisions hereof apply either to
corporations, partnerships, or individuals, men or women, as the case may be,
shall in all cases be assumed as though in each case fully expressed.

                                   ARTICLE 28
                                 OPTION TO RENEW

         28.1 Exercise of Option. Tenant shall have the right (the "Renewal
Option") to extend the Term for one (1) period of five (5) Lease Years (a
"Renewal Period") provided (i) Tenant gives notice to Landlord of its election
to exercise its Renewal Option no more than 270 days and no less than 180 days
prior to the Expiration Date, and (ii) no Event of Default exists at the time
Tenant exercises its Renewal Option.

         28.2 Current Market Rent. All terms and conditions of this Lease shall
remain in full force and effect during the Renewal Period, except that (i)
Annual Base Rent and increases thereof during the Renewal Period shall be
adjusted to equal one hundred percent (100%) of the "Current Market Rent" (as
defined below), and (ii) the Base Year for Operating Expenses and the Base Year
for Real Estate Taxes shall be adjusted to be calendar year 2005. The "Current
Market Rent" for purposes of this Lease shall mean the prevailing market rent as
of the date such market rent is to go into effect for renewal leases of other
comparable office space of the same quality, size, location, level of finish,
and lease term in the Building and in other comparable office buildings located
in the Chantilly, Virginia area, for a tenant of credit-worthiness comparable to
that of Tenant, taking into account all relevant factors, including the
building's age and condition, any significant renovation of the Building or the
leased space, all components of rent, including base rent, the number, type and
base year for various rent escalations, base year and pass-throughs for
operating expenses and real estate taxes, and any "Concessions" (as defined
below). The determination of Current Market Rent shall include establishing new
Lease terms consistent with market terms at such time relating to minimum rent,
base year, rent escalations, and pass throughs of real estate taxes and
operating expenses, to modify or replace as appropriate the then existing terms
contained in this Lease relating to such items. The term "Concessions" means any
free or reduced rent periods, construction allowances or other concessions.

         28.3 Initial Negotiation Period. Within ten (10) days after receipt of
Tenant's notice of its election to exercise the Renewal Option, Landlord shall
provide Tenant with Landlord's good faith determination of the Current Market
Rent. If Tenant agrees with

                                       37
<PAGE>   38

Landlord's determination, Tenant shall notify Landlord within fifteen (15) days
after Tenant's receipt of Landlord's determination of the Current Market Rent.

         28.4 Determination of Rent by Brokers. If Tenant fails to agree with
Landlord's determination of the Current Market Rent within the fifteen (15) day
period referred to in Article 28.3, then, within five (5) days after the
expiration of the fifteen (15) day period, Landlord and Tenant shall each
appoint a real estate broker, and shall notify the other of its choice within
such time. If either party fails to select a broker within such time, the broker
selected by the other party shall establish the Current Market Rent. For a
period of thirty (30) days after their appointment, the two (2) brokers selected
by Landlord and Tenant shall attempt to agree upon the Current Market Rent. If
the two (2) brokers agree upon the Current Market Rent, the Current Market Rent
shall be as agreed upon by them. If the two (2) brokers are unable to agree upon
the Current Market Rent within this 30-day period, they shall select a third
real estate broker within ten (10) days after the expiration of the 30-day
period. If the two (2) brokers fail to select a third broker within such time,
either party may request such appointment by the U.S. District Court for the
Eastern District of Virginia. Within thirty (30) days after the third broker is
selected, the third broker shall make an independent determination of the
Current Market Rent, which shall be conclusively binding upon the parties. The
third broker shall notify the parties of his determination in writing. In making
his determination, the third broker may rely upon whatever data he deems
appropriate, including any data submitted to him by the other two (2) brokers.
Landlord and Tenant shall each pay the fee of the broker selected by it, and
shall equally share the payment of the fee of the third broker.

         28.5 Qualifications of Brokers. Each broker selected under this Article
shall be licensed in Virginia as a real estate broker, specializing in the field
of commercial office leasing in the Northern Virginia area, having no less than
ten (10) years' experience in such field, and recognized as ethical and
reputable within the field.

         28.6 Execution of Lease Amendment. The parties shall execute a Lease
amendment reflecting the extension and the new economic terms within ten (10)
days after determination of the Current Market Rent, but failure to execute such
amendment shall not affect the commencement of the Renewal Period or Tenant's
obligation to pay rent during the Renewal Period at the rate established
pursuant to this Article.

         28.7 Time is of the Essence. Time is of the essence with respect to the
time periods in this Article.

                                   ARTICLE 29
                              RIGHTS OF FIRST OFFER

         29.1 Right of First Offer for First Floor.

              (i) Subject to the terms of this Article, Tenant shall have a
right of first offer (the "First Offer Right") to negotiate for the lease of any
space on the first floor of the Building that becomes available for lease (each
of such spaces being referred to as the "First

                                       38
<PAGE>   39

Offer Space"). First Offer Space shall not include any space that is available
for lease as of the date hereof.

             (ii) If all or any part of the First Offer Space becomes available
for lease at a time when the First Offer Right is in effect ("Available First
Offer Space"), Landlord shall offer the Available First Offer Space to Tenant
before offering it to any other party. Landlord shall offer the Available First
Offer Space to Tenant by submitting to Tenant a binding letter of intent with
respect thereto, identifying the date on which Landlord expects the Available
First Offer Space to be available for occupancy by Tenant (the "First Offer
Space Commencement Date"), and containing such terms and conditions as are
determined by Landlord, in Landlord's reasonable discretion, acting in good
faith, to be the market rate for available space in the Building and in other
comparable office buildings in the Chantilly, Virginia area. Tenant shall have
the right within ten (10) days after Tenant receives the letter of intent to
lease the Available First Offer Space by executing the letter of intent and
delivering it to Landlord. The term for the First Offer Space shall end on the
same date as the Term for the Premises; provided, however, that if the First
Offer Space Commencement Date will occur within the last three Lease Years of
the Term, Landlord may condition the lease of the Available First Offer Space to
Tenant upon the extension of the Expiration Date for the entire Premises to be
three (3) years from the First Offer Space Commencement Date, with Rent for such
additional period being determined by Landlord, in its reasonable discretion.

            (iii) The parties shall execute an Amendment to Lease reflecting the
lease of the Available First Offer Space within ten (10) days after Tenant
executes the letter of intent, but failure to execute such Amendment shall not
affect the commencement of the term for the Available First Offer Space or
Tenant's obligation to pay rent for the Available First Offer Space in
accordance with the letter of intent.

             (iv) Any Available First Offer Space that Tenant fails to lease in
accordance with this Article shall thereafter become "Rejected First Offer
Space." Landlord shall be free to lease all or any part of any Rejected First
Offer Space to any other party without first offering all or any part of the
Rejected First Offer Space to Tenant.

              (v) Notwithstanding anything to the contrary in this Article, no
First Offer Space shall be considered available for lease if (i) the tenant then
occupying the space desires to renew its lease, whether pursuant to a renewal
option or otherwise, or (ii) the space is subject to any other right of first
offer, first refusal or similar right of another tenant existing as of the
Commencement Date. Accordingly, any such First Offer Space not considered
available for lease pursuant to the preceding sentence may be leased by Landlord
to the existing tenant or party holding such other right without first offering
it to Tenant.

         29.2 Right of First Offer for Suite 105.

              (i) Subject to the terms of this Article, Tenant shall have a
right of first offer (the "Suite 105 First Offer Right") to negotiate for the
lease of Suite 105 ("Suite 105"), which is on the first floor of the Building
and contains approximately 3,285 rentable square feet. Suite 105 is identified
on Exhibit F attached hereto. The lease for the tenant occupying Suite 105

                                       39
<PAGE>   40

as of the date hereof expires on February 28, 2002, and any re-leasing rights of
such tenant are subordinate to this Suite 105 First Offer Right.

             (ii) If Tenant desires to exercise its Suite 105 First Offer Right,
it shall so notify Landlord by November 1, 2001. Landlord shall then offer Suite
105 to Tenant effective as of the date Suite 105 next becomes available (which
Landlord anticipates will be March 1, 2002). Landlord shall offer Suite 105 to
Tenant by submitting to Tenant a binding letter of intent with respect to Suite
105, containing such terms and conditions as are determined by Landlord, in
Landlord's reasonable discretion, acting in good faith, to be the market rate
for available space in the Building and in other comparable office buildings in
the Chantilly, Virginia area. Tenant shall have the right within ten (10) days
after Tenant receives the letter of intent to lease the Suite 105 by executing
the letter of intent and delivering it to Landlord. The term for the Suite 105
First Offer Space shall end on the same date as the Term for the Premises.

            (iii) The parties shall execute an Amendment to Lease reflecting the
lease of Suite 105 within ten (10) days after Tenant executes the letter of
intent, but failure to execute such Amendment shall not affect the commencement
of the term for Suite 105 or Tenant's obligation to pay rent for Suite 105 in
accordance with the letter of intent.

             (iv) If Tenant fails to exercise its Suite 105 First Offer Right,
Landlord shall thereafter be free to lease all or any part of Suite 105 to any
other party without first offering all or any part of it to Tenant.

              (v) Article 29.1 shall apply to Suite 105 if it becomes available
before the Suite 105 First Offer Right must be exercised. However, if Tenant
fails to exercise the Suite 105 First Offer Right, Suite 105 shall thereafter no
longer be subject to either the First Offer Right or the Suite 105 First Offer
Right.

         29.3 Tenant may not be in Default. This Article shall apply only as
long as this Lease is in full force and effect and there is no uncured monetary
Event of Default hereunder.

         29.4 Time is of the Essence. Time shall be of the essence with respect
to all of the time periods set forth in this Article.

                                   ARTICLE 30
                  TENANT'S MANDATORY LEASE OF ADDITIONAL SPACE

         30.1 Lease of Must Take Space. Landlord shall lease to Tenant and
Tenant shall lease from Landlord the "Must Take Space" (as hereafter defined),
subject to the terms of this Article. The "Must Take Space" is located on the
first floor of the Building, contains approximately 2,945 rentable square feet,
and is identified on Exhibit G attached hereto.

         30.2 Terms for Must Take Space. The Must Take Space shall be leased on
the same terms and conditions as the Premises as though it had been leased along
with the Premises as of the Commencement Date, except that (i) the lease term
for the Must Take Space shall commence one hundred fifty (150) days after the
Commencement Date (the "Must Take Commencement Date"), (ii) Base Rent for the
Must Take Space shall be calculated at the rate of

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<PAGE>   41

$19.00 per rentable square foot, with three percent (3%) annual increases
occurring on commencement of the second and each subsequent Lease Year during
the Term, (iii) effective as of January 1, 2001, Tenant's Proportionate Share of
Building Operating Expenses, Tenant's Proportionate Share of Complex Operating
Expenses, and Tenant's Proportionate Share of Real Estate Taxes shall be
increased to include the Must Take Space, which proportionate shares shall then
equal 17.04%, 7.15% and 7.15%, respectively, and (iv) Landlord, at its cost,
shall build out the Must Take Space to the same level of finish and pursuant to
the same procedure as is provided in the Work Agreement, except that the date of
substantial completion of the Must Take Space shall be on or before the Must
Take Commencement Date.

         30.3 Execution of Lease Amendment. Tenant shall lease the Must Take
Space by executing an Amendment to Lease amendment and delivering it to Landlord
within ten (10) business days after Tenant receives the Amendment from Landlord,
but failure to execute such Amendment shall not effect the commencement of the
term for the Must Take Space or Tenant's obligation to pay rent for the Must
Take Space pursuant to this Article.

                                   ARTICLE 31
                                OPTION TO EXPAND

         31.1 Option to Lease Expansion Space. Subject to the terms of this
Article, Tenant shall have one (1) option to lease additional space in the
Complex that is vacant and available for lease during the period starting on the
date hereof and ending on the one hundred twentieth (120th) day after the
Commencement Date (the "Expansion Period"). (Space leased pursuant to this
Article is referred to hereafter as the "Expansion Space.")

         31.2 Exercise of Expansion Option; Determination of Expansion Space. If
Tenant desires to exercise its expansion option, Tenant shall so notify Landlord
within the Expansion Period. Tenant's notice shall identify the approximate size
and location of the space that Tenant desires to lease. Upon receipt of Tenant's
notice, Landlord shall work with Tenant in good faith to agree upon the exact
size and location of the Expansion Space, taking into account the space that is
available at that time and Landlord's reasonable marketing requirements for the
remaining vacant space. If the parties are unable to agree upon the size and
location of the Expansion Space within ten (10) days after Landlord's receipt of
Tenant's notice, Tenant's expansion option shall expire.

         31.3 Terms for Expansion Space. The Expansion Space shall be leased on
the same terms and conditions as the Premises as though it had been leased along
with the Premises as of the Commencement Date, except that (i) the lease term
for the Expansion Space shall commence on the date that the space is delivered
to Tenant (the "Expansion Space Commencement Date"), (ii) Base Rent for the
Expansion Space shall be calculated at the rate of $19.00 per rentable square
foot, with three percent (3%) annual increases occurring on commencement of the
second and each subsequent Lease Year during the Term, (iii) effective as of
January 1, 2001, Tenant's Proportionate Share of Operating Expenses and Tenant's
Proportionate Share of Real Estate Taxes shall be increased to include the
Expansion Space, (iv) Landlord, at its cost, shall build out the Expansion Space
to the same level of finish and pursuant to the same procedure as is provided in
the Work Agreement, except that the date of substantial completion of the
Expansion Space shall be on or

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<PAGE>   42

before the Expansion Space Commencement Date, and (v) Landlord may increase the
Security Deposit as it deems appropriate, in its reasonable judgment.

         31.4 Extension of Lease Term. If Tenant leases the Expansion Space
hereunder, the Term of this Lease shall be extended so that the Expiration Date
becomes the last day of the month in which the fifth (5th) anniversary of the
Expansion Space Commencement Date occurs. During the period from the existing
Expiration Date to the extended Expiration Date, the Premises shall be leased
upon the same terms and conditions as in the original Term, except that, if this
extension results in a seventh Lease Year, Base Rent for the seventh Lease Year
shall be increased by three percent (3%) over Base Rent for the sixth Lease
Year.

         31.5 Execution of Lease Amendment. The parties shall execute an
Amendment to Lease reflecting the lease of the Expansion Space and the extension
of the Term within ten (10) days after Tenant receives the Amendment from
Landlord, but failure to execute such Amendment shall not affect the
commencement of the term for the Expansion Space or Tenant's obligation to pay
rent for the Expansion Space in accordance with this Article.

         31.6 Tenant may not be in Default. This Article shall apply only as
long as this Lease is in full force and effect and there is no uncured monetary
Event of Default hereunder.

         31.7 Time is of the Essence. Time shall be of the essence with respect
to all of the time periods set forth in this Article.

                                   ARTICLE 32
                                 SATELLITE DISH

         32.1 Right to have Satellite Dish. Tenant, at no additional rent, shall
have the right to install and maintain on the roof of the Building one (1)
satellite dish antenna or microwave antenna, together with the cables extending
from such antenna to the Premises, subject to the conditions set forth in this
Article. (Said satellite dish or microwave dish antenna and all related cables,
boosters and other equipment are referred to hereafter collectively as the
"Antenna").

         32.2 Approval of Specifications. The location, size, weight, height and
all other features and specifications of the Antenna and the manner of initial
installation of it shall be mutually agreed upon by Landlord and Tenant. Tenant
shall install appropriate screening of the Antenna as reasonably required by
Landlord.

         32.3 Compliance with Legal Requirements. The Antenna, and the
installation thereof, shall comply with all Legal Requirements. If, at any time
during the Term, the Antenna does not comply with all Legal Requirements, Tenant
shall immediately remove it or, with Landlord's approval, immediately modify the
Antenna to bring it into compliance with all Legal Requirements. Tenant's
failure to obtain any permit required in order to initially install the Antenna,
or a subsequent inability to maintain the Antenna for any reason, shall have no
effect on this Lease other than to nullify the right to install and use the
Antenna.

                                       42
<PAGE>   43

         32.4 Maintenance. Landlord shall have the right to regulate and control
access to the roof by Tenant, its employees, agents and contractors. At all
times, Tenant shall maintain the Antenna in clean, good and safe condition and
in a manner that avoids interference with or disruption to Landlord and other
tenants of the Building.

         32.5 Indemnification. Tenant's placement of the Antenna on the roof as
aforesaid shall be at Tenant's sole risk and Landlord shall have no liability
for damage thereto or loss thereof under any circumstances. Tenant shall
indemnify and hold Landlord harmless for any liability, damages, costs or
expenses (including reasonable attorneys' fees) incurred as a result of
permitting the placement and operation of the Antenna on the roof and allowing
access thereto.

         32.6 Removal. At the expiration or earlier termination of the term of
this Lease, Tenant shall remove the Antenna from the Building and surrender the
area of the roof occupied by the Antenna in good condition, ordinary wear and
tear and unavoidable damage by the elements excepted.

                           [INTENTIONALLY LEFT BLANK]

                                       43
<PAGE>   44

         32.7 Payment of Electric Charges. Tenant shall be responsible for
paying all electric charges incurred in connection the operation of the Antenna.

         32.8 Non-Exclusive Right. Landlord may grant other parties the right to
use the roof for any lawful purposes (including the installation of other
satellite dishes and antennas) as long as this use does not unreasonably
interfere with Tenant's right to use the roof for its Antenna in accordance with
this Article.

     IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease under seal
as of the date above written.

                              LANDLORD:

ATTEST/WITNESS:               ENTERPRISE CENTER LIMITED
                              PARTNERSHIP NUMBER TWO, a Virginia
                              limited partnership

                              By:  ELV/ENTERPRISE II, INC., a Delaware
                                   corporation, its general partner

/s/ THERESA F. MCLAUGHLIN          By: /s/ SCOTT W. JENKINS
---------------------------           --------------------------(Seal)
Name: Theresa F. McLaughlin            Scott W. Jenkins, Vice President
     ----------------------

[Corporate Seal]

                              TENANT:

ATTEST/WITNESS:               CROSSWALK.COM, INC. a Delaware corporation

/s/ GARY A. STRUZIK           By: /s/ W. M. PARKER
---------------------------      -------------------------------(Seal)
Name: Gary A. Struzik         Name:   W. M. Parker
     ----------------------        -----------------------------------
                              Title:  CEO / PRESIDENT
                                    ----------------------------------

[Corporate Seal]

                                       44
<PAGE>   45

                                    EXHIBIT A

                              PLAN SHOWING PREMISES

                                [to be inserted]

                                       A-1

<PAGE>   46

                                    EXHIBIT B

                                 WORK AGREEMENT

     1.  Definitions.  The following terms, when used herein, shall have the
meanings set forth below.

         1.1  Architect.  Eiger Consulting.

         1.2 Change Order. Any change requested by Tenant to the Space Plan or
to the approved Construction Documents.

         1.3 Construction Documents. The construction working drawings,
mechanical, electrical and other technical specifications, and the finishing
details for the Tenant Improvements, including wall finishes and colors and
technical and mechanical equipment installations, if any. The Construction
Documents shall be subject to Tenant's approval, which shall not be unreasonably
withheld or delayed.

         1.4 Contractor. The person or firm selected by Landlord to construct to
the Tenant Improvements.

         1.5 Punchlist. A list of construction items to be completed after the
Commencement Date that are minor in character and do not materially interfere
with Tenant's use of the Premises.

         1.6 Space Plan. The plan dated July 8, 1999 showing the outline of and
the specifications for the Tenant Improvements, including the location of
offices, conference rooms and other areas. The Space Plan is attached hereto as
Exhibit B-1.

         1.7 Substantial Completion. Completion of the Tenant Improvements
substantially in accordance with the Construction Documents, except for the
Punchlist, but in no event before the issuance of a Certificate of Occupancy.

         1.8 Tenant Delay. Any delay in completing the Tenant Improvements
caused by any of the following: (i) Tenant's failure to furnish within five (5)
days after the date hereof all information to Architect needed for the
Construction Documents, (ii) Tenant's failure to approve the Construction
Documents or to note any objections thereto within five (5) days after they are
submitted to Tenant, (iii) Tenant's failure to meet any other deadlines
specified in this Work Agreement, (iii) a Change Order, (iv) interference with
the construction process by any person employed or retained by Tenant, or (v)
any other Tenant-caused delay.

         1.9 Tenant Improvements. The improvements to the Premises shown on the
Space Plan that are being made pursuant to this Work Agreement in order to
prepare the Premises for Tenant's occupancy. The term "Tenant Improvements"
shall not include cabling for telephone and computer systems or the installation
of any of Tenant's furniture or equipment.

                                      B-1
<PAGE>   47

However, "Tenant Improvements" shall include electrical wiring to junction boxes
at locations reasonably designated by Tenant for the purpose of installing
modular furniture. The Tenant Improvements shall be constructed with Landlord's
building standard materials.

     2.  Construction; Change Orders.

         A. Contractor shall construct the Tenant Improvements in a good and
workmanlike manner substantially in accordance with the Construction Documents.
Landlord shall supervise this construction. Landlord shall not be paid an
administrative or construction management fee for its supervision of the Tenant
Improvements. Landlord shall endeavor in good faith to cause the Tenant
Improvements to be Substantially Completed on or before November 1, 1999,
subject to Tenant Delay, but neither the validity of this Lease nor the
obligations of Tenant under this Lease shall be affected by a failure to
Substantially Complete the Premises by such date, and Tenant shall have no claim
against Landlord because of Landlord's failure to Substantially Complete the
Premises on such date or by any other date, except for Tenant's right to
terminate in Section 9 below.

         B. Landlord's approval of any Change Orders shall be required, but
shall not be unreasonably withheld except that Landlord, in its reasonable
discretion, may withhold or delay its approval of any Change Orders to the
extent that they affect the Building's structure or systems or would be visible
from the exterior of the Building or from any common area in the Building.

         C. Upon Substantial Completion of the Tenant Improvements, Landlord
will deliver possession of the Premises to Tenant. Before delivering the
Premises to Tenant, Landlord will obtain a certificate of occupancy, if one is
required by law for Tenant to occupy the Premises. Tenant will cooperate with
Landlord as necessary to obtain any such certificate of occupancy.

     3. Affect of Tenant Delay on Commencement Date. If Landlord is delayed in
delivering possession of the Premises to Tenant in accordance with this Work
Agreement because of a Tenant Delay, then, notwithstanding Article 4 of the
Lease, the Commencement Date shall be the date (as reasonably determined by
Landlord) that Landlord would have delivered the Premises to Tenant but for the
Tenant Delay.

     4. Payment for the Tenant Improvements. Landlord shall pay for the cost of
completing the Tenant Improvements pursuant to the Space Plan, including the
cost to prepare the Space Plan and Construction Documents. If Tenant requests
any Change Orders, Tenant shall pay for the differential cost of the Change
Order within thirty (30) days after receipt of an invoice from Landlord or the
Contractor.

     5. Punchlist. Before the Premises are delivered to Tenant, Landlord, Tenant
and Contractor shall make a final inspection of the Premises to ensure that the
Tenant Improvements have been made substantially in accordance with the
Construction Documents, at which time the Punchlist shall be prepared.
Contractor shall complete the items on the Punchlist as soon as practicable
after the Commencement Date.

                                      B-2
<PAGE>   48

     6. Early Entry by Tenant. Landlord shall grant Tenant access to the
Premises at least ten (10) days before the Commencement Date solely for the
purpose of installing telephone and computer cable and wiring, fixtures,
furniture and related items within the Premises. Landlord may exercise its
reasonable discretion as to the timing of Tenant's early entry as such timing
relates to the completion of the Tenant Improvements. During any periods of such
early entry, Tenant shall abide by all terms and conditions of this Lease
(including all insurance requirements), but Tenant shall not be required to pay
Rent before the Commencement Date.

     7. Tenant Allowance for Cabling. Landlord shall provide Tenant with a cash
allowance of $6,000.00 (the "Tenant Allowance") to be applied against the cost
of installing computer and telephone cabling and equipment in the Premises.
Landlord shall pay the Tenant Allowance to Tenant within thirty (30) days
following receipt by Landlord of (i) properly executed lien waiver forms from
all contractors performing the work for which reimbursement is sought, and (ii)
invoices or other evidence of the cost of such work. Any unused portion of the
Tenant Allowance shall be retained by Landlord.

     8. Tenant's Right to Terminate Lease. Notwithstanding anything to the
contrary in the Lease or this Work Agreement, if Landlord fails to Substantially
Complete the Tenant Improvements by January 31, 2000, and such failure is
attributable solely to acts within Landlord's reasonable control, Tenant may
terminate this Lease upon ten (10) days' notice to Landlord given at any time
after January 31, 2000 but before the Tenant Improvements are Substantially
Completed.

                                      B-3
<PAGE>   49

                                    EXHIBIT C

                       DECLARATION BY LANDLORD AND TENANT

     THIS DECLARATION is hereby attached to and made a part of the Lease dated
________, 1999 (the "Lease"), between ENTERPRISE CENTER LIMITED PARTNERSHIP
NUMBER TWO, a Virginia limited partnership ("Landlord") and CROSSWALK.COM, INC.
a Delaware corporation ("Tenant"). All terms used in this Declaration have the
same meaning as they have in the Lease.

         1. Landlord and Tenant do hereby declare that possession of the
Premises was accepted by Tenant on

         2. As of the date hereof the Lease is in full force and effect, and
Landlord has fulfilled all of its obligations under the Lease required to be
fulfilled by Landlord on or prior to said date;

         3. The Commencement Date is hereby established to be _______________;
and

         4. The Expiration Date is hereby established to be ________________,
unless the Lease is sooner terminated pursuant to any provisions thereof.

                              LANDLORD:

ATTEST/WITNESS:               ENTERPRISE CENTER LIMITED
                              PARTNERSHIP NUMBER TWO, a Virginia
                              limited partnership

                              By:  ELV/ENTERPRISE II, INC., a Delaware
                              corporation, its general partner

                                By:
-------------------------          ------------------------------(Seal)
Name:                              Scott W. Jenkins, Vice President
     --------------------

                              TENANT:

ATTEST/WITNESS:               CROSSWALK.COM, INC.

                              By:
-------------------------        --------------------------------(Seal)
Name:                         Name:
     --------------------          --------------------------------------
                              Title:
                                   --------------------------------------

                                       C-1

<PAGE>   50

                                    EXHIBIT D

                              RULES AND REGULATIONS

         The following rules and regulations have been formulated for the safety
and well-being of all the tenants of the Building and the Complex and become
effective upon occupancy. Strict adherence to these rules and regulations is
necessary, to guarantee that each and every tenant will enjoy a safe and
unannoyed occupancy. Any repeated or continuing violation of these rules and
regulations by Tenant after notice from Landlord, shall be sufficient cause for
termination of this Lease at the option of Landlord.

         Landlord may, upon request by any tenant, waive the compliance by such
tenant of any of the foregoing rules and regulations provided that (i) no waiver
shall be effective unless signed by Landlord or Landlord's authorized agent
(.ii) any such waiver shall not relieve such tenant from the obligation to
comply with such rule or regulation in the future unless expressly consented to
by Landlord, and (iii) no waiver granted to any tenant shall relieve any other
tenant from the obligation of enjoyment with the foregoing rules and regulations
unless such other tenant has received a similar waiver in writing from Landlord.

         1. The sidewalks, entrances, passages, courts, vestibules, or
stairways, or other parts of the Complex and the Building not occupied by any
tenant shall not be obstructed or encumbered by any tenant or used for any
purpose other than ingress and egress to and from any tenant's Premises.
Landlord shall have the right to control and operate the public portions of the
Complex, the Building, and the facilities furnished for the common use of the
tenants, in such manner as Landlord deems best for the benefit of the tenants
generally. No tenant shall permit the visit to its Premises of persons in such
numbers or under such conditions as to interfere with the use and enjoyment by
other tenants of the entrances, corridors, elevators, and other public portions
or facilities of the Complex or the Building.

         2. No signs, awnings or other projections shall be attached to the
outside walls of any building without the prior written consent of Landlord. No
drapes, blinds, shades or screens shall be attached to or hung in, or used in
connection with, any window or door of the Premises, without the prior consent
of Landlord. Such signs, awnings, projections, curtains, blinds, screens or
other fixtures must be of a quality, type, design and color, and attached in the
manner approved by Landlord.

         3. No show cases or other articles shall be put in front of or affixed
to any part of the exterior of the Complex or the Building, nor placed in any
interior Common Area without the prior written consent of Landlord.

         4. The water and wash closets and other plumbing fixtures shall not be
used for any purpose other than those for which they were constructed, and no
sweepings, rubbish, rags, or other substances shall be thrown therein. All
damages resulting from any misuse of the fixtures shall be borne by the tenant
who, or whose servants, employees, agents, visitors, or licensees, shall have
caused the same.

         5. There shall be no marking, painting, drilling into or in anyway
defacing any part of the Premises, the Building, or the Complex. No boring,
cutting or stringing or wires shall be

                                      D-1
<PAGE>   51

permitted. No tenant shall construct, maintain, use or operate within its
Premises or elsewhere within or on the outside of the Building or the Complex,
any electrical device, wiring or apparatus in connection with a loud speaker
system or other sound system.

         6. No animals, birds or pets of any kind shall be brought into or kept
in or about the Premises, and no cooking shall be done or permitted by any
tenant on its Premises except for a tenant's employee's own use. No tenant shall
cause or permit any unusual or objectionable odors to be produced or permeate
from its Premises.

         7. No tenant shall make, or permit to be made, any unseemly or
disturbing noises or disturb or interfere with occupants of this or any
neighboring building or Premises or with any person having business with such
occupants. No tenant shall throw anything out of the doors or windows or down
the corridors or stairs.

         8. No inflammable, combustible, or explosive fluid, chemical or
radioactive substance shall be brought or kept upon the Premises.

         9. No additional locks or bolts of any kind shall be placed upon any of
the doors, or windows, by any tenant, nor shall any changes be made in existing
locks or the mechanism thereof without prior approval from Landlord, which
approval shall not be unreasonably withheld. Each tenant shall, upon termination
of its tenancy, restore to Landlord all keys of stores, offices, storage, and
toilet rooms either furnished to, or otherwise procured by, such tenant, and in
the event of the loss of any keys so furnished such tenant shall pay to Landlord
the cost of replacement thereof. All locks shall be keyed to a master key and a
copy of said master key delivered to Landlord prior to occupancy by Tenant.

        10. All removals, or the carrying in or out of any safes, freight,
furniture or bulky matter of any description must take place during the hours
which Landlord or its Agent may determine from time to time. Landlord reserves
the right to inspect all freight to be brought into the Premises and to exclude
from the Premises all freight which violates any of these Rules and Regulations
or the Lease of which these Rules and Regulations are a part.

        11. Any person employed by any tenant to do janitorial work within its
Premises must obtain Landlord's consent and such person shall comply with all
instructions issued by the superintendent of the Building or the Complex. No
tenant shall engage or pay any employees on its Premises, except those actually
working for such tenant on its Premises.

        12. No tenant shall purchase spring water, ice, coffee, soft drinks,
towels, or other like service, from any company or persons whose repeated
violations of these Regulations have caused, in Landlord's opinion, a hazard or
nuisance to the Building, the Complex, and/or its occupants.

        13. Landlord reserves the right to exclude from the Building at all
times any person who is known or does not properly identify himself to the
management. Landlord may at its option require all persons admitted to or
leaving the Building and the Complex between the ours of 6 p.m. and 8 a.m.,
Monday through Friday, and at all times on Saturday, Sunday, and Holidays, to
register. Each tenant shall be responsible for all persons for whom he
authorizes entry into or exit out of the Building and shall be liable to
Landlord for all acts of such persons.

                                      D-2
<PAGE>   52

        14. The Premises shall not be used for lodging or sleeping or for any
immoral or illegal purpose.

        15. No Tenant shall occupy or permit any portion of its Premises to be
used or occupied for the possession, storage, manufacture, or sale of liquor,
narcotics, tobacco in any form, or as a barber or manicure shop, or as an
employment bureau, unless said Tenant's lease expressly grants permission to do
so.

        16. Landlord's employees shall not perform any work for Tenant or do
anything outside of their regular duties, unless under special instruction from
the management.

        17. Canvassing, soliciting, and peddling on the Premises is prohibited
and each Tenant shall cooperate to prevent the same.

        18. No plumbing or electrical fixtures shall be installed by any tenant
without the prior written consent of Landlord, which shall not be unreasonably
withheld.

        19. There shall not be used, either by any Tenant or by jobbers or
others in the delivery or receipt of merchandise, any hand trucks, except those
equipped with rubber tires and side guards.

        20. Where carpet is installed over access plates to under-floor ducts,
Tenant will be required, at Tenant's expense, to provide access to said access
plates when necessary.

        21 .Mats, trash, or other objects shall not be placed in the public
corridors.

        22. Tenant shall not overload the floors or exceed the maximum floor
weight limits of the Premises.

        23. Landlord shall not be responsible for enforcing Tenant's parking
rights against any third parties.

        24. Tenant agrees not to operate any machinery in the Premises which may
cause vibration or damage to the Premises; not to use a loudspeaker which can be
heard outside the Premises, or to extend curb service to customers.

        25. Landlord hereby designates the followings days as holidays
(collectively, the "Holidays"), on the dates observed by the Federal government,
as applicable, on which days services will not be provided and normal Building
operating hours will not be followed: New Year's Day; Memorial Day; Independence
Day; Labor Day; Thanksgiving Day, the Friday after Thanksgiving; and Christmas
Day, and any other national holiday promulgated by a Presidential Executive
Order or Congressional Act.

                                       D-3<PAGE>   1
                                                                   EXHIBIT 10.46

                    CROSSWALK.COM, INC. (FORMERLY DIDAX INC.)

                             1998 STOCK OPTION PLAN
                          As Amended February 26, 1999

1.PURPOSE. The purpose of this Plan is to advance the interests of
Crosswalk.com, Inc. (formerly DIDAX, INC.) (the "Company") by providing an
opportunity to its selected directors, key employees (as defined in Paragraph
2(b)) and consultants (as defined in Paragraph 2(a)) to purchase shares (the
"Shares") of the Common Stock, par value $.01 per share (the "Common Stock"), of
the Company. By encouraging stock ownership, the Company seeks to attract,
retain and motivate key employees, consultants and ministry partners. It is
intended that this purpose will be effected by the granting of (i) incentive
stock options ("Incentive Options") as described in Section 422A of the Internal
Revenue Code of 1986, as amended (the "Code"); and (ii) nonqualified stock
options ("Nonqualified Options," and, together with the incentive options, the
"Options") as provided herein. (Collectively, the "Stock Incentives").

2.DEFINITIONS.

     (a) The term "consultants" means those persons, other than employees of the
     Company, who provide services to the Company, including nonemployee
     directors of the Company, and who are determined by the Compensation
     Committee to be eligible for Stock Incentives under this Plan.

     (b) The term "key employees" means those executive, administrative,
     operational, engineering or managerial employees who are determined by the
     Compensation Committee to be eligible for Stock Incentives under this Plan.

     (c) The term "ministry partners" means those organizations or individuals.
     other than employees and consultants, whose relationship with the Company
     is critical to meeting the Company's business objectives and who are
     determined by the Compensation Committee to be eligible for stock
     incentives under this plan.

     (d) The term "optionee" means an individual to whom an option is granted
     under this Plan.

     (e) The term "grantee" means an individual to whom a purchase right is
     granted under this Plan.

3. EFFECTIVE DATE. This Plan becomes effective April 6, 1998, with amendment on
February 26, 1999 to increase the number of shares underlying the Plan from
400,000 to 800,000, as so adopted by the Board of Directors of the Company, and
approved by the stockholders on May 5, 1999.

4. STOCK SUBJECT TO THE PLAN. The Shares that may be purchased (through the
exercise of options) under this Plan shall not exceed in the aggregate 800,000
Shares. If any Stock Incentives granted under the Plan shall terminate, expire
or be cancelled as to any Shares, new Stock Incentives may thereafter be granted
covering such Shares. In addition, any Shares purchased under this Plan
subsequently repurchased by the Company pursuant to the terms hereof may again
be granted under the Plan. The Shares issued upon exercise of Stock Incentives
under this Plan may, in whole or in part, be either authorized but unissued
Shares or issued Shares reacquired by the Company. Notwithstanding any other
provisions of this Plan, the aggregate number of Shares subject to outstanding
options granted under the Plan, plus the aggregate number of shares issued upon
the exercise of all options granted under the Plan, shall never be permitted to
exceed the number of Shares specified in the first sentence of section 4, except
in accordance with subsection 8(a) below.

5. ADMINISTRATION. The Plan shall be administered by the Board of Directors of
the Company (the "Board"), or by a committee appointed by the Board which shall
not have less than two (2) members (in either case, the "Compensation
Committee"). No single participant may receive options to purchase more than the
total number of shares authorized for issuance under the 1998 Plan. The

<PAGE>   2

Compensation Committee is tasked with the responsibility of recommending option
grants for approval by the Board of Directors and the Compensation Committee or
the Board of Directors may delegate administrative duties to such employees of
the Company as it deems proper. However, it is only through a majority vote of
the Board of Directors, either acting on its own or via the recommendation of
the Compensation Committee, that nonqualified stock options or incentive stock
options to purchase shares of Common Stock may be granted, and thus it is
ultimately the Board of Directors, subject to the provisions of the 1998 Plan,
that shall have the sole authority, in its discretion:"

     (a) to determine to which of the eligible individuals, and the time or
     times at which, options to purchase Common Stock of the Company shall be
     granted;

     (b) to determine the number of shares of Common Stock to be subject to
     options granted to each eligible individual;

     (c) to determine the price to be paid for the shares of Common Stock upon
     the exercise of each option;

     (d) to terminate the Plan or accelerate Option vesting, and to determine
     the vesting and duration of each option granted;

     (e) to determine the terms and conditions of each stock option agreement
     (which need not be identical) entered into between the Company and any
     eligible individual to whom the Board of Directors has granted an option;

     (f) to interpret the Plan; and

     (g) to make all determinations deemed necessary or advisable for the
     administration of the Plan.

The Compensation Committee, if any, shall be appointed by and shall serve at the
pleasure of the Board of Directors of the Company. No member of the Compensation
Committee shall be liable for any action or determination made with respect to
the Plan.

6. ELGIBLE EMPLOYEES, CONSULTANTS AND MINISTRY PARTNERS. Incentive Options may
be granted to such key employees of the Company, including members of the Board
of Directors who are also employees of the Company, as are selected by the
Compensation Committee and approved by Board of Directors. Nonqualified Options
may be granted to such key employees, consultants and ministry partners,
including members of the Board of Directors, as are selected by the Compensation
Committee and approved by the Board of Directors. The term "employee" includes
an officer or director who is an employee of the Company or a parent or
subsidiary of it, as well as a nonofficer, nondirector employee of the Company
or a parent or subsidiary or it.

7. DURATION OF THE PLAN. This Plan shall terminate ten (10) years from the
effective date of this Plan, unless terminated earlier pursuant to Paragraph 13
hereof, and no Stock Incentives may be granted after such termination.

8. RESTRICTIONS ON INCENTIVE OPTIONS. Incentive Options (but not Nonqualified
Options) granted under this Plan shall be subject to the following restrictions:

     (a) Limitation on Number of Shares. The aggregate fair market value,
     determined as of the date the Incentive Option is granted, of the Shares
     with respect to which Incentive Options are exercisable for the first time
     by an employee during any calendar year shall not exceed $100,000. If an
     employee is eligible to participate in any other incentive stock option
     plans of the Company which are also intended to comply with the provisions
     of Section 422A of the Code, the applicable annual limitation shall apply
     to the aggregate number of Shares for which Incentive Options may be
     granted under all such plans. An Incentive Option may be granted which
     exceeds the $100,000

<PAGE>   3

     limitation, as long as under then applicable law the portion of such option
     which is exercisable for shares in excess of the $100,000 limitation shall
     be treated as a nonqualified option. No Incentive Options may be exercised
     until and unless the Plan is approved by the shareholders within one year
     of the date hereof, such approval to be expressed in any legal way under
     Delaware law.

     (b) 10% Stockholder. If any employee to whom an Incentive Option is granted
     pursuant to the provisions of the Plan is on the date of grant the owner of
     stock (as determined under Section 425(d) of the Code) possessing more than
     10% of the total combined voting power of all classes of stock of the
     Company (or of any parent or subsidiary of the Company), then the following
     special provisions shall be applicable to the Incentive Option granted to
     such individual:

        (i) The option price per Share subject to such Incentive Option shall
        not be less than 110% of the fair market value of one Share on the date
        of grant; and

        (ii) The Incentive Option shall not have a term in excess of five (5)
        years from the date of grant.

        In determining stock ownership, an Optionee shall be considered as
        owning the voting capital stock owned, directly or indirectly, by or for
        his brother and sisters, spouse, ancestors, and lineal descendants.
        Voting capital stock owned, directly or indirectly, by or for a
        corporation, partnership, estate or trust shall be considered as being
        owned proportionately by or for its shareholders, partners, or
        beneficiaries, as applicable. Common Stock with respect to which any
        such Optionee holds an option shall not be counted. Additionally,
        outstanding capital stock shall include all capital stock actually
        issued and outstanding immediately after the grant of the option to the
        Optionee. Outstanding capital stock shall not include capital stock
        authorized for issue under outstanding options held by the Optionee or
        by any other person.

9. TERMS AND CONDITIONS OF OPTIONS. Incentive and Nonqualified Options granted
under this Plan shall be evidenced by stock option agreements in such form and
not inconsistent with the Plan as the Compensation Committee may recommend and
the Board of Directors shall approve from time to time, which agreements shall
evidence the following terms and conditions:

     (a) Price.

        (i) Incentive Options. Subject to the condition of subparagraph (b)(i)
        of Paragraph 8, if applicable, with respect to each Incentive Option,
        the purchase price per Share payable upon the exercise of each Incentive
        Option granted hereunder shall be recommended by the Compensation
        Committee and approved by the Board of Directors and shall be not less
        than 100% of the fair market value of one Share on the day the option is
        granted.

        (ii) Nonqualified Options. With respect to each Nonqualified Option, the
        purchase price per Share payable upon the exercise of each Nonqualified
        Option granted hereunder shall be recommended by the Compensation
        Committee and approved by the Board of Directors at the time the
        Nonqualified Option is granted, but shall not be less than 40% of fair
        market value at the time of grant.

     (b) Number of Shares. Each option agreement shall specify the number of
     Shares to which it pertains.

     (c) Exercise. Subject to the conditions of subparagraphs (a) and (b) (ii)
     of Paragraph 8, if applicable, each option shall be exercisable for the
     full amount or for any part thereof and at such intervals or in such
     installments as the Compensation Committee recommends and the Board of
     Directors determines at the time it grants such option; provided, however,
     that no option shall be exercisable with respect to any Shares later than
     ten (10) years after the date of the grant of such option.

<PAGE>   4

     (d) Notice of Exercise and Payment. An option shall be exercisable only by
     delivery of a written notice to the Compensation Committee or the Board of
     Directors, any member of the Compensation Committee or the Board of
     Directors, the Company's Secretary, or any other officer of the Company
     designated by the Compensation Committee and approved by the Board of
     Directors to accept such notices on its behalf, specifying the number of
     Shares for which it is exercised. If such Shares are not at the time
     effectively registered under the Securities Act of 1933, as amended, the
     Optionee shall include with such notice a letter, in form and substance
     satisfactory to the Company confirming that such Shares are being purchased
     for the Optionee's own account for investment and not with a view to the
     resale or distribution thereof. Payment shall be made in full at the time
     of delivery to the Optionee of a certificate or certificates covering the
     number of Shares for which the option was exercised. Payment shall be made
     (i) by cash or check, (ii) if permitted by the Compensation Committee and
     approved by the Board of Directors, by delivery and assignment to the
     Company of shares of the Company's stock having a fair market value (as
     determined by the Compensation Committee) equal to the exercise price,
     (iii) if permitted by the Compensation Committee and approved by the Board
     of Directors, by a promissory note, or (iv) by a combination of (i), (ii),
     and (iii). The value of the shares of the Company's stock for such purpose
     shall be its fair market value as of the date the option is exercised, as
     determined in accordance with procedures to be established by the
     Compensation Committee and approved by the Board of Directors.

     (e) Withholding Taxes; Delivery of Shares. The Company's obligation to
     deliver Shares upon exercise of a Nonqualified Option, in whole or in part,
     shall be subject to the Optionee's satisfaction of all applicable federal,
     state, and local income and employment tax withholding obligations. The
     Optionee may satisfy the obligation, in whole or in part, by electing to
     have the Company withhold Shares having a value equal to the amount
     required to be withheld. The value of Shares to be withheld shall be based
     on the fair market value of the Shares on the date the amount of tax to be
     withheld is to be determined. If Common Stock acquired by exercise of an
     incentive stock option granted pursuant to this Plan is disposed of within
     two (2) years from the date of grant of the option or within one (1) year
     after the transfer of the Common Stock to the Optionee, the holder of the
     Common Stock immediately prior to the disposition shall promptly notify the
     Company in writing of the date and terms of the disposition and shall
     provide such other information regarding the disposition as the Company may
     reasonably require.

     (f) Nontransferability. No option shall be transferable by the Optionee
     otherwise than by will or the laws of descent or distribution, and each
     option shall be exercisable during his lifetime only by him (except as
     otherwise provided for in subparagraph (g) below).

     (g) Termination of Options. Each option shall terminate and may no longer
     be exercised if the Optionee ceases for any reason to be an employee of, or
     consultant to, or ministry partner with the Company, except that:

        (i) if the Optionee's performance of services shall have terminated for
        any reason other than cause, resignation or other voluntary action
        before his eligibility to retire, disability (as defined below) or
        death, he may at any time within a period of thirty (30) days after such
        termination of the performance of services exercise his option to the
        extent that the option was exercisable by him on the date of termination
        of his performance of services;

        (ii) if the Optionee's performance of services shall have been
        terminated because of disability within the meaning of Section 22(e)(3)
        of the Internal Revenue Code, the Optionee may, at any time within a
        period of one (1) year after the termination of performance of services,
        exercise his option to the extent that the option was exercisable by him
        on the date of termination of his employment or performance of services;
        and

<PAGE>   5

        (iii) if the Optionee dies at a time when the option was exercisable by
        him, then his estate, personal representative or beneficiary to whom it
        has been transferred may, at any time within a period of one (1) year
        following his death if the Optionee's performance of services shall have
        been terminated by his death, or for the period following the
        termination of his performance of services during which the option would
        have remained exercisable under clauses (i) or (ii) above if the
        Optionee's performance of services shall have been terminated prior to
        his death, exercise the option to the extent the Optionee might have
        exercised it at the time of his death; provided, however, that no option
        may be exercised to any extent by anyone after the date of expiration of
        the option.

        (iv) The Board of Directors determines to extend the option exercise
        date for the nonqualified portion of the plan on a case by case basis.

     (h) Rights as Stockholder. The Optionee shall have no rights as a
     stockholder with respect to any Shares covered by his option until the date
     of issuance of a stock certificate to him for such Shares.

        (i) Repurchase of Shares by the Company. Any Shares purchased by an
        Optionee upon exercise of an option may in the discretion of the
        Compensation Committee and approved by the Board of Directors be subject
        to repurchase by the Company if and to the extent specifically set forth
        in the agreement pursuant to which the Shares were purchased.

10. STOCK DIVIDENDS; STOCK SPLITS; STOCK COMBINATIONS; RECAPITALIZATIONS.
Appropriate adjustment shall be made in the maximum number of Shares of Common
Stock subject to the Plan and in the number, kind and price of Shares covered by
any Stock Incentive granted hereunder to give effect to any stock dividends or
other distributions, stock splits, stock combinations, recapitalizations and
other similar changes in the capital structure of the Company after the
effective date of the Plan.

11. MERGER; SALE OF ASSETS; DISSOLUTION. In the event of a change of the Common
Stock resulting from a merger or similar reorganization as to which the Company
is the surviving corporation, the number and kind of shares which thereafter may
be subject to Stock Incentives granted under this Plan and the number, kind and
price of Shares then subject to Stock Incentives shall be appropriately adjusted
in such manner as the Compensation Committee recommends and the Board of
Directors may deem equitable to prevent substantial dilution or enlargement of
the rights available or granted hereunder. Except as otherwise determined by the
Board of Directors of the Company, a merger or a similar reorganization that the
Company does not survive, or a sale of all or substantially all of the assets of
the Company, shall cause every nonvested Incentive Option and Nonqualified
Option outstanding hereunder to terminate, to the extent not then exercised,
unless any surviving entity agrees to assume the obligations hereunder.

12. NO RIGHTS. Except as hereinabove expressly provided in Sections 10, no
Optionee shall have any rights by reason of any subdivision or consolidation of
shares of the capital stock of any class or the payment of any stock dividend or
any other increase or decrease in the number of shares of any class or by reason
of any dissolution, liquidation, merger or consolidation or spin-off of assets
or stock of another corporation, and any issue by the Company of shares of stock
of any class or of securities convertible into shares of stock of any class
shall not affect, and no adjustment by reason thereof shall be made with respect
to, the number or price of shares subject to any option granted hereunder. The
grant of an option pursuant to this Plan shall not affect in any way the right
or power of the Company to make adjustments, reclassifications, reorganizations
or changes of its capital or business structure or to merge or consolidate or to
dissolve, liquidate, sell, or transfer all or any part of its business or
assets.

13. COMPLIANCE WITH APPLICABLE LAWS. Notwithstanding any other provision of the
Plan, the Company shall have no liability to issue any shares under the Plan
unless such issuance would comply with all applicable laws and the applicable
requirements of any securities exchange or similar entity. Prior to the issuance
of any shares under the Plan, the Company may require a written statement

<PAGE>   6

that the recipient is acquiring the shares for investment and not for the
purpose or with the intention of distributing the shares.

14. DEATH OF A PARTICIPANT. In the event of the death of an Optionee, any
options which the Optionee was entitled to exercise on the date immediately
preceding his death shall be exercisable by the person or persons to whom those
rights pass by will or by the laws of descent and distribution. Any such
exercise shall be by written notice thereof filed with the Secretary of the
Company at the Company's corporate headquarters prior to the option's expiration
date, and any person exercising such an option shall be treated as an Optionee
for purposes of the provisions of this Plan.

15. EMPLOYMENT AND SHAREHOLDER STATUS. The Plan does not constitute a contract
of employment, and selection as an Optionee will not give any employee the right
to be retained in the employ of the Company. The grant of an option under the
Plan shall not confer upon the holder thereof any right as a shareholder of the
Company. As of the date on which an Optionee exercises an option, the Optionee
shall have all rights of a stockholder of record with respect to the number of
shares of Common Stock as to which the option is exercised, irrespective of
whether certificates to evidence the shares of stock have been issued on such
date. If the redistribution of shares is restricted pursuant to Paragraph 12,
certificates representing such shares may bear a legend referred to such
restrictions.

16. TERMINATION OR AMENDMENT OF PLAN. The Board of Directors may at any time
terminate this Plan or make such changes in or additions to the Plan as it deems
advisable without further action on the part of the stockholders of the Company,
including revising the number of shares reserved for issuance hereunder,
provided that no such termination or amendment shall adversely affect or impair
any then outstanding Stock Incentive without the consent of the person holding
such Stock Incentive.

17. TERMINATION. The Plan shall terminate automatically on April 6, 2008, and
may be terminated at any earlier date by the Board. No option shall be granted
hereunder after the termination of the Plan, but such termination shall not
affect the validity of any option then outstanding.

18. TIME OF GRANTING OPTIONS. The date of grant of an option hereunder shall,
for all purposes, be the date on which the Board of Directors makes the
determination granting such option.

19. RESERVATION OF SHARES. The Company, during the terms of this Plan, will at
all times reserve and keep available such number of shares of its Common Stock
as shall be sufficient to satisfy the requirements of the Plan.

20. EFFECTIVE DATE. This Plan was adopted by the Board of Directors, pursuant to
stockholder approval in accordance with the requirements of the Internal Revenue
Code and the Delaware General Corporation Law of the Company, on April 6, 1998,
with amendment on February 26, 1999, and shall be effective on said date,
provided the Plan is approved within twelve (12) months of said date. Options
may be granted, but may not be exercised, prior to the date of such shareholder
approval.

21. CORPORATION FINANCIAL INFORMATION. The Company shall provide, upon request,
all Optionees on an annual basis with a balance sheet and income statement for
the then ending fiscal year.

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