Document:

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                                                                   EXHIBIT 10.15

                                PROPOSAL: LEASE
                      INTERNATIONAL TECH PARK, BANGALORE.

1.0  COMPANY NAME

     Integrated Information Systems, INC

2.0  SUBJECT PROPERTY/UNIT

     a)   Type of Space                  :    Office (Innovator)
     b)   Floor Level                    :    Seventh Floor
     c)   Unit Number                    :    07 & 08.
     d)   Gross Floor Area(1)            :    4448.97 sqft

3.0  SUBJECT TERMS

     a)   Tenancy                        :    3 Years
     b)   Rental Rate(1)                 :    Rs 33 psft pm
     c)   Fit out Period Rent-Free(2)    :    2 months and 15 days

4.0  SECURITY DEPOSIT

     A total of 10 months' rental of the subject unit to be paid as Security
     Deposit. This would be paid according to the following schedule:

     1.   Signing of Letter of Offer     :    5 months' rental
     2.   Signing of Indenture of Lease  :    5 months' rental
     ------------------------------------------------------------------
          Total                          :    10 months' rental

---------------------
(1) Rentals to be paid based on Gross area (Super built area) and paid
    quarterly, in advance.

(2) Air conditioning & Maintenance charges are payable from the date of
    handover.
<PAGE>   2
5.0  OPERATIONS & MAINTENANCE FEE       :    Rs 6.70 psft

     Includes General maintenance, Lift Maintenance, Sanitary and Plumbing,
     Common areas, Gondola cleaning, External areas, Fire Protection system,
     Building management, Security, Common area electrical system, Landscaping,
     Refuse disposal, and pest control. This is payable on super built area and
     are paid quarterly in advance. ITPL reserves the right to change the fee
     due to inflation and unforeseen circumstance.

6.0  PROVISION FOR AIRCONDITIONING      :    Rs 6.40 psft

     Air-conditioning is centralized and will be on from 8 am to 8 pm on all
     week days, and 8 am to 2 pm on Saturdays (ie: 12 hours on weekdays and 6
     hours on Saturday). This is payable on super built area and are paid
     quarterly in advance.

7.0  STATE & CENTRAL GOVERNMENT FEES

     All fees & payments to the state and central government with respect to the
     lease agreement and the leasing of the office unit will be borne by
     INTEGRATED INFORMATION SYSTEMS, INC.

8.0  VALIDITY

     The above proposal is valid until 28th August 1999, subject to
     availability. In the event that the proposed unit is taken up, we will
     endeavor to assign the next most appropriate units that meet with your
     requirement.
<PAGE>   3
                                LETTER OF OFFER

THIS LETTER OF OFFER is made at Bangalore on the 2nd day of Aug 1999

From

INFORMATION TECHNOLOGY PARK LIMITED a Company incorporated under the Companies
Act, 1956, having its Registered Office at International Tech Park, Whitefield
Road, Bangalore 560 066 hereinafter called "ITPL" (which expression shall
unless repugnant to the context or meaning thereof be deemed to include its
successors in business and assigns) of the One Part;

To

INTEGRATED INFORMATION SYSTEMS, INC. a Company incorporated under the laws of
United States of America having its office at Fountainhead Corporate Park, 1560
W. Fountainhead Parkway, Suite 200 Tempe, Arizona 85282 hereinafter called "THE
PROPOSED ACQUIRER" (which expression shall unless repugnant to the context or
meaning thereof be deemed to include its successors and permitted assigns) of
the Other Part.

WHEREAS

1. KIADB granted to ITPL lease of land for a period of eleven years and
thereafter to be converted into freehold subject to fulfillment of certain
conditions.

2. On ITPL fulfilling the conditions KIADB executed a sale deed in respect of a
portion of the property and granted a freehold title to ITPL.

3. In accordance with the various permissions ITPL has developed the said land
by constructing on the said land inter alia several multi-storied buildings
consisting of Office, Production, Commercial and Residential Units (hereinafter
referred to as "THE SAID BUILDINGS") the entire development to be used as an
Information Technology Park for Electronics, Information Technology,
Telecommunication and other allied activities.

4. The proposed acquirer intends to and is in the process of promoting and
incorporating an Indian Company (hereinafter called the Indian Company) for the
purpose of carrying on the business activity of SOFTWARE DEVELOPMENT.

5. The proposed acquirer will apply to FIPB/SIA/STP/RBI for seeking approval
for establishing a 100% Export Orient Unit/Wholly owned subsidiary or a Joint
Venture Company.

6. The proposed acquirer subject to the approval of Reserve Bank of India seeks
to and intends to acquire property on lease for and on behalf of the Indian
Company, which shall be utilized for the purposes of the business activity of
the Indian Company.

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7. The proposed acquirer undertakes to complete all the formalities of
incorporating the Indian Company and the Indenture of Lease to be executed will
reflect the Indian Company as the Lessee subject to all other Governmental
approvals and permissions being obtained.

8. The Proposed Acquirer being eligible for allotment of a Unit in the
International Tech Park and having evinced an interest in acquiring by way of
Lease the Office Unit No 7 & 8 on the 7th floor of Innovator admeasuring
4448.97 sq.ft approximately of super built-up area and ITPL is agreeable to
lease such Office Unit to the Proposed Acquirer.

9. The Proposed Acquirer on behalf of the Indian company has paid to ITPL on or
before the execution of this MOU a sum equivalent to Rs 1468160.10 which is 10
months rental as being part of the security deposit.

10. ITPL shall enter into and execute and the Indian Company shall enter into
and execute the Indenture of Lease within one month from the date of execution
of this Letter of Offer or within such extended period as may be mutually
agreed upon between the parties hereto.

11. In the event the proposed acquirer fails to procure the Indian Company to
execute the Indenture of Lease as mentioned herein above then ITPL shall become
entitled to forfeit the sum equivalent to the amount paid as security deposit.

12. Subject to clause 11, in the event that all necessary Governmental
approvals and permissions for the incorporation of the Indian Company and the
acquisition of the said Unit by way of lease are not obtained within a period
of three months from the date of this letter of Offer ITPL shall refund to the
Proposed Acquirer the said security deposit free of interest, after deducting
all costs and expenses incurred by ITPL and thereafter neither Party shall have
any claim, demand, right whatsoever against the other.

THIS LETTER OF OFFER ACCORDINGLY, RECORDS THE VARIOUS TERMS AND UNDERSTANDING
OF THE PARTIES HERETO AS UNDER:

1. UNIT DESCRIPTION:

1.1 Unit No 7 & 8 situated on the 7th floor of Innovator building in
International Tech Park, Bangalore more fully measuring approximately 4448.97
sq ft square feet of super built up area subject to plus or minus 3% as per
plan shown at ANNEXURE 1.

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2. TERMS:

2.1 RENTAL: The rent for the unit shall be Rs 33 per square feet per month
(Rupees Thirty-three) to be paid quarterly in advance on or before the fifth
day of the first month of each quarter.

2.2. OPERATIONS AND MAINTENANCE CHARGE: The lessee shall pay quarterly in
advance an operations and maintenance charge @ Rs. 6.70 (Rupees six and paise
seventy only) per square feet per month which is subject to change. The
operations and maintenance charge is payable from the date of commencement of
lease/expiry of fitout period/commencement of operations whichever is earlier.

2.3 AIR CONDITIONING CHARGE: The lessee shall pay quarterly in advance an air
conditioning charge @ Rs. 6.40 (Rupees six and paise forty only) per square
feet per month which is subject to change. The air conditioning charges is
payable from the date of commencement of lease/expiry of fit out
period/commencement of operations whichever is earlier.

2.4 LATE PAYMENT: ITPL shall be entitled to charge Interest @ 2% per month or
part thereof on all delayed payments from the date the amount was payable until
the date of payment.

2.5 SECURITY DEPOSIT: The Proposed acquirer shall deposit an interest free
refundable security deposit with ITPL equivalent to Ten months rental as and by
way of security for the due observance and compliance of the terms and
conditions of this LOO/Indenture. The amount of such deposit and manner of
payment is as mentioned in Annexure 2. The Security Deposit shall be refunded
after deducting all amounts payable to ITPL within a period of two weeks after
handing over possession of the unit. The Proposed Acquirer has paid to ITPL on
or before the execution of this LOO a sum equivalent to Ten months rental being
part of the security deposit.

2.6 STAMP DUTY AND REGISTRATION FEE: Stamp Duty, Registration charges and all
other costs, charges and expenses incidental to the Letter of Offer,
registration of Indenture of Lease or any other documents required to be
obtained for the registration of the Indenture including documents in
connection with this transaction shall be borne and paid by the proposed
acquirer.

2.7 PAYMENT DATE: All payments other than rent and operations and maintenance
fee under the LOO/Indenture/Byelaws shall be paid within a period of 7 days
from the date of billing. The payment would be made such time the approvals are
got from GOI & RBI.

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2.8 The operations, maintenance and air conditioning charge is payable from the
date of commencement of operations or from the date of expiry of fit out period
whichever is earlier.

3. TENURE

3.1 TERM: The Lease tenure is for a fixed period of three years.

3.2 RENEWAL: Renewal of the lease tenure is for a further period of 3 years on
terms and conditions to be mutually agreed at the time of renewal.

3.3 INTIMATION OF RENEWAL: The lessee must give a minimum of 6 month notice
period in the event of renewal of lease and ITPL shall renew the lease provided
there are no breaches of the terms and conditions of Indenture committed by the
Lessee.

4. TERMINATION:

4.1 In the event of termination of the Lease, the proposed acquirer/lessee
undertakes to pay the lease rent for the remaining period of the lease.

5. FIT OUT PERIOD

5.1 The fit out period is as mentioned in ANNEXURE 2 attached herewith.

5.2 No rent is payable during the fit out period unless the business operations
of the proposed acquirer/lessee is commenced.

5.3 The proposed acquirer/lessee shall before the commencement of fit out
obtain ITPLs prior written approval in respect of the fit out plans.

5.4 The proposed acquirer/lessee shall pay the fit out deposit @ Rs.50.00
(rupees fifty only) psf or Rs. 50000.00 (rupees fifty thousand only) whichever
is higher and take out necessary insurance policies against any damage or
repairs on account of fire, third party liability etc caused by the fit out
contractor.

5.5 The fit out deposit will be returned after the completion of fit out after
deducting any sums on account of damages etc.

6. HANDING OVER OF THE PREMISES

6.1 The premises will be handed over to the proposed acquirer after a joint
inspection with the proposed acquirer or his authorized representative on such
date and time as notified by ITPL.

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7. LEASE INDENTURE

7.1 The Indenture of Lease shall be signed and registered within a period of
one month from the date of accepting this LOO subject to obtaining the various
approvals for establishing the Indian entity. If the proposed acquirer fails to
sign and register the Indenture within one month then ITPL shall be entitled to
forfeit the deposit and the proposed acquirer shall not have any right in
respect of the premises thereafter.

8. USAGE

8.1 To use the Unit only for the purpose of SOFTWARE DEVELOPMENT and shall not
use the same for any other purpose without the prior written consent of ITPL.
ITPL may, if it deems fit and subject to such terms and conditions as may be
specified in writing, allow the change of or carrying additional production
manufacturing, processing, trading, marketing or service activities provided,
that the same are permitted by the terms of the Lease Deed dated 6th June 1995
between Kamataka Industrial Area Development Board ("KIADB") and ITPL and the
permissions granted to ITPL by Government bodies/authorities in connection with
the IT Park.

9. NON ASSIGNABILITY

9.1 The proposed acquirer shall not without the prior written permission of
ITPL assign, transfer, part with or share any interest under this LOO.
<PAGE>   8
10. GENERAL

10.1 In the event the various governmental approvals are refused and the
Proposed Acquirer is disabled from any Indian entity to carry out its business
activity of software development. ITPL shall return the amounts paid as
security deposit after deducting only the expenses incurred to obtain the
various governmental approvals.

10.2 The Proposed Acquirer agrees to abide by the Bye Laws for the allottees of
units in IT Park, which is subject to change from time to time.

10.3 This LOO/Indenture and the Bye Laws are subject to Indian Laws.

SIGNED FOR AND ON BEHALF OF INFORMATION TECHNOLOGY PARK LIMITED BY THE
AUTHORIZED SIGNATORY.

WE INTEGRATED INFORMATION SYSTEMS, INC. HEREBY ACCEPT THE OFFER DATED 2ND
AUGUST 1999 ON THE ABOVE TERMS AND CONDITIONS.

SIGNED FOR AND ON BEHALF OF INTEGRATED INFORMATION SYSTEMS, INC BY THE
AUTHORIZED SIGNATORY.

ANNEXURE 1: FLOOR PLAN OF UNIT (PLEASE ENCLOSED)

ANNEXURE 2: VARIOUS TERMS (EXCEL CHART ENCLOSED)

ANNEXURE 3: LIST OF VARIOUS CHARGES APPLICABLE FOR OFFICE UNITS (ENCLOSED-EXCEL
CHART)<PAGE>   1

                                                                   EXHIBIT 10.16

                                  HUGHES CENTER

                           3930 HOWARD HUGHES PARKWAY

                                LAS VEGAS, NEVADA

                                 LEASE AGREEMENT

                                     between

                            3930 BUILDING PARTNERSHIP

                                       and

                         INTEGRATED INFORMATION SYSTEMS

                            Dated November 30, 1999

<PAGE>   2

                                 LEASE AGREEMENT

                                TABLE OF CONTENTS

ARTICLES                                                                   PAGE

 ARTICLE 1 DEFINITIONS ...................................................    1
 ARTICLE 2 LEASE GRANT ...................................................    5
 ARTICLE 3 LEASE TERM ....................................................    7
 ARTICLE 4 USE OF PREMISES AND COMMON AREAS ..............................    7
  4.1 Premises . .........................................................    7
  4.2 Common Areas of Building . .........................................    7
  4.3 Landlord's Rights in Common Areas ..................................    7
 ARTICLE 5 BASE RENT AND ADDITIONAL RENT. ................................    8
  5.1 Base Rent ..........................................................    8
  5.2 [Intentionally Omitted] ............................................    8
  5.3 Additional Rent . ..................................................    8
  5.4 Interest on Late Payments ..........................................    8
 ARTICLE 6 BASE RENT ADJUSTMENT ..........................................    8
 ARTICLE 7 SERVICES TO BE FURNISHED BY LANDLORD ..........................    9
 ARTICLE 8 IMPROVEMENTS TO BE MADE BY LANDLORD ...........................   10
 ARTICLE 9 MAINTENANCE AND REPAIR OF PREMISES BY LANDLORD ................   10
 ARTICLE 10 GRAPHICS .....................................................   11
 ARTICLE 11 CARE OF THE PREMISES BY TENANT ...............................   11
 ARTICLE 12 REPAIRS AND ALTERATIONS BY TENANT ............................   11
 ARTICLE 13 USE OF ELECTRICAL SERVICES BY TENANT .........................   11
 ARTICLE 14 LAWS AND REGULATIONS .........................................   12
  14.1 General . .........................................................   12
  14.2 Hazardous Materials ...............................................   12
  14.3 Certain Insurance Risks ...........................................   13
 ARTICLE 15 BUILDING RULES ...............................................   13
 ARTICLE 16 ENTRY BY LANDLORD ............................................   13
 ARTICLE 17 ASSIGNMENT AND SUBLETTING ....................................   13
 ARTICLE 18 LIENS ........................................................   14
 ARTICLE 19 INSURANCE ....................................................   14
  19.1 Property Insurance . ..............................................   14
  19.2 Liability Insurance . .............................................   15
  19.3 Requirements for Insurance Policies ...............................   15
  19.4 Waiver of Subrogation Rights ......................................   15
 ARTICLE 20 INDEMNITY ....................................................   15
 ARTICLE 21 PROPERTY DAMAGE ..............................................   16
 ARTICLE 22 CONDEMNATION .................................................   16
 ARTICLE 23 DAMAGES FROM CERTAIN CAUSES ..................................   16
 ARTICLE 24 EVENTS OF DEFAULT ............................................   17
 ARTICLE 25 LANDLORD'S REMEDIES ..........................................   17
 ARTICLE 26 LANDLORD'S DEFAULT ...........................................   18
 ARTICLE 27 PEACEFUL ENJOYMENT ...........................................   18
 ARTICLE 28 HOLDING OVER .................................................   18
 ARTICLE 29 SUBORDINATION TO MORTGAGE ....................................   19
 ARTICLE 30 LANDLORD'S LIEN ..............................................   19
 ARTICLE 31 ATTORNEY'S FEES ..............................................   21
 ARTICLE 32 NO IMPLIED WAIVER ............................................   21
 ARTICLE 33 PERSONAL LIABILITY ...........................................   21
 ARTICLE 34 SECURITY DEPOSIT .............................................   21
 ARTICLE 35 NOTICE .......................................................   21
 ARTICLE 36 SEVERABILITY .................................................   21
 ARTICLE 37 RECORDATION ..................................................   22
 ARTICLE 38 GOVERNING LAW ................................................   22
 ARTICLE 39 FORCE MAJEURE ................................................   22
 ARTICLE 40 TIME OF PERFORMANCE ..........................................   22
 ARTICLE 41 TRANSFERS BY LANDLORD ........................................   22
 ARTICLE 42 COMMISSIONS ..................................................   22
 ARTICLE 43 EFFECT OF DELIVERY OF THIS LEASE .............................   22
 ARTICLE 44 CORPORATE AUTHORITY; PARTNERSHIP AUTHORITY ...................   22

                                      -i-
<PAGE>   3

 ARTICLE 45 JOINT AND SEVERAL LIABILITY ..................................   23
 ARTICLE 46 INTERPRETATION ...............................................   23
 ARTICLE 47 INCORPORATION OF PRIOR AGREEMENTS; MODIFICATIONS .............   23
 ARTICLE 48 WAIVER OF JURY TRIAL .........................................   23
 ARTICLE 49 NO MERGER ....................................................   23
 ARTICLE 50 COUNTERPARTS .................................................   23
 ARTICLE 51 EXHIBITS .....................................................   23

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                                LIST OF EXHIBITS

                                                            Principal Reference
       Exhibit                Description                  "In Section/Article"

         "A"    Legal Description ...............................  1.4
         "B"    Floor Plan of the Premises ......................  1.15
         "C"    Parking Agreement ...............................  4.2(ii)
         "D"    [Intentionally Omitted]
         "E"    Rules and Regulations ...........................  15
         "F"    Commencement Memorandum .........................  1.22

                                     -iii-
<PAGE>   5

                                  HUGHES CENTER

                                 LEASE AGREEMENT

     THIS LEASE AGREEMENT (the "Lease"), is made and entered into as of the
day of November 30 1999, between 3930 BUILDING PARTNERSHIP, a Nevada general
partnership ("Landlord"), and Integrated Information Systems, a     corporation
("Tenant").

                                   WITNESSETH:

                                    ARTICLE 1
                                   DEFINITIONS

          1.1 [Intentionally Omitted]

          1.2 "Allowance" shall mean an amount equal to Five and 00/100 Dollars
($5.00) per square foot of Usable Area in the Premises. The Allowance shall only
be paid by Landlord to Tenant upon Landlord's execution of this Lease, provided
all terms and conditions contained in Article 8 are met. The Premises are
stipulated for all purposes to contain three thousand two hundred forty (3,240)
square feet of Usable Area.

          1.3 "Base Rent" shall mean the sum of Two and 37/100 Dollars ($2.37)
per month for each square foot of Rentable Area comprising the Premises which is
equal to one hundred four thousand and nine hundred fifteen and 16/100 Dollars
($104,915.16) per annum as adjusted pursuant to Section 5.2 hereof. The Base
Rent due for the first full calendar month during the Lease Term has been paid
to Landlord by Tenant contemporaneously with Tenant's execution hereof.

          1.4 "Building" shall mean (a) the parcel of real property described in
Exhibit "A" attached hereto and incorporated herein, (b) the office building and
parking structure built or to be built on such parcel of real property, and (c)
any and all other improvements thereon and appurtenances thereto. The street
address of the Building is 3930 Howard Hughes Parkway, Hughes Center, Las Vegas,
Nevada 89109; such street address may be modified by Landlord from time to time
during the Lease Term.

          1.5 "Building Core" shall mean the area within the outermost finish
face of that portion of the Building that incorporates those areas that provide
service to the tenants of that floor and to the Building. These areas of service
include: restroom facilities for men and women along with the vestibule and
access, electrical, mechanical, and telephone rooms, janitor closets, elevators
and service elevators along with lobby and stairs, vestibules, and all vertical
floor penetrations for mechanical/electrical/plumbing for the Building.

          1.6 "Building Shell" shall mean the condition of the Building
completed with the following improvements: (a) outside walls (not including
drywall), core walls, and elevator lobby areas completed to building standard
condition for public areas; (b) unfinished concrete floors throughout the
Premises, broom clean; (c) building standard 110 volt 220 amp. power supplied
to the Building Core along with 277/480 volt fluorescent lighting power supplied
to the Building Core; (d) men's and ladies' restroom facilities with building
standard finished located on each floor on which the Premises are located; (e)
building standard voice communication speakers and smoke detectors in accordance
with applicable building codes and provided only at the core; and (f)
mechanical, electrical, plumbing, life safety, heating, air conditioning and
ventilation in Building Core area as required to connect to and service the
Premises.

          1.7 "Commencement Date" shall mean the earlier of (i) the date that
Tenant actually commences any business operations from the Premises or (ii)
November 1, 1999.

          1.8 "Expense Stop" shall mean the amount (per square foot of Rentable
Area of the Premises) Landlord herewith agrees to expend as its share of
Operating Expense (which shall be a credit for Tenant to apply to offset
Operating Expenses charged to the Premises), not to exceed the total amount of
Operating Expenses for calendar year 2000 (the "Base Year") (per square foot of
Rentable Area in the Building); provided, however, that if occupancy of the
Building during the Base Year is less than ninety-five percent (95%), Operating
Expenses for the Base Year shall be "grossed up" to that amount of Operating
Expenses that, using reasonable projections, would normally be expected to be
incurred if the Building were ninety-five percent (95%) occupied during the Base
Year. With respect to the Real Property Taxes included in

                                      -1-
<PAGE>   6

Operating Expenses for the Base Year, such amount shall be determined under the
assumption that the Building is fully assessed as a completed and occupied unit.

          1.9 [Intentionally Omitted]

          1.10 "Laws" shall mean all applicable statutes, regulations,
ordinances, requirements and orders promulgated by any federal, state, local or
regional governmental authority now in force or in force after the Commencement
Date.

          1.11 "Lease Interest Rate" shall mean the lesser of (a) that
fluctuating rate of interest equal to two percentage points (2%) over the rate
of interest announced from time to time by the Bank of America National Trust
and Savings Association as its prime or reference commercial lending rate (or in
the event such bank ceases to announce such rate, then by such other federally
regulated banking institution as Landlord shall determine), or (b) the maximum
interest rate permitted by law.

          1.12 "Lease Term" shall mean the term commencing on the Commencement
Date and continuing until sixty (60) months after the first day of the first
full calendar month following the Commencement Date.

          1.13 "Mortgagee" shall mean the mortgagee under a mortgage or
beneficiary under a deed of trust holding a lien encumbering the Building or any
holder of a ground leasehold interest in the Building or any part thereof.

          1.14 "Operating Expenses" shall mean all costs of any kind paid or
incurred by Landlord in owning, operating, cleaning, equipping, protecting,
lighting, repairing, replacing, heating, air-conditioning and maintaining the
Building as a first class office project, and a proration of Operating Expenses
for all common areas within Hughes Center as provided in the REA or as otherwise
determined by Landlord, including by way of illustration but not limitation, all
of the following: (a) all amounts charged to the Building pursuant to the REA;
(b) Real Property Taxes; (c) all costs, charges and surcharges for utilities,
water, sewage, janitorial, waste disposal and refuse removal and all other
utilities and services provided to the Building; (d) insurance costs for which
Landlord is responsible under this Lease or which Landlord or any Mortgagee
deems necessary or prudent; (e) any costs levied, assessed or imposed pursuant
to any a applicable Laws; (f) the cost (amortized over such period as Landlord
reasonably determines together with interest at the Lease Interest Rate on the
unamortized balance) of any capital improvements to the Building or equipment
replacements made by Landlord after the Commencement Date that are intended to
reduce other Operating Expenses or are required by any Laws or are necessary in
order to operate the Building at the same quality level as prior to such
replacement; (g) costs and expenses of operation, repair and maintenance of all
structural and mechanical portions and components of the Building including,
without limitation, plumbing, communication, heating, ventilating and
air-conditioning ("HVAC"), elevator, and electrical and other common Building
systems; (h) a pro rata portion of the cost of the management office rental for
Hughes Center; (i) all costs incurred in the management and operation of the
Building including, without limitation, gardening and landscaping, maintenance
of all parking areas, structures and garages, maintenance of signs, resurfacing
and repaving, painting, lighting, cleaning, and provision of Building security;
(j) all personal property taxes levied on or attributable to personal property
used in connection with the Building; (k) depreciation on personal property
owned by Landlord which is consumed in the operation or maintenance of the
Building; (l) rental or lease payments paid by Landlord for rented or leased
personal property used in the operation or maintenance of the Building; (m)
management fees, wages, salaries and other labor costs incurred in the
management and operation of the Building; (n) fees for required licenses and
permits; (o) reasonable legal, accounting and other professional fees; (p)
reasonable and appropriate reserves for repair and replacement; and (q) a
reasonable allowance to Landlord for supervision of all of the foregoing not to
exceed five percent (5%) of the total of all other Operating Expenses. If the
Building is not fully occupied during any portion of the Lease Term, Landlord
shall make an appropriate adjustment to Operating Expenses for such period
employing sound accounting and management principles, to determine the amount of
Operating Expenses that would have been incurred had the Building been fully
occupied during such period (collectively referred to as "Grossed-Up". Operating
Expenses shall not include depreciation of the Building or equipment therein,
commissions of real estate brokers and leasing agents, nor any amounts expended
for tenant improvements. Notwithstanding the foregoing, Operation Expenses shall
not include:

                  (1) any ground lease rental;

                  (2) Costs of capital improvements and equipment; except for
         those described in Section 1.14(f) hereof;

                  (3) Rentals for items (except when needed in connection with
         normal repairs and maintenance of permanent systems) which, if
         purchased rather than rented, would constitute a capital improvement
         which is specifically excluded in Subsection (2) above (excluding,
         however,

                                      -2-
<PAGE>   7

          equipment not affixed to the Building which is used in providing
          janitorial or similar service);

                    (4) Costs incurred by Landlord for the repair of damage to
          the Building, to the extent that Landlord is reimbursed by insurance
          proceeds;

                    (5) Costs, including permit, license and inspection costs,
          incurred with respect to the installation of tenant improvements made
          for tenants or other occupants in the Building or incurred in
          renovating or otherwise improving, decorating, painting or
          redecorating vacant space for tenants or other occupants of the
          Building;

                    (6) Depreciation, amortization and interest payments, except
          as otherwise provided in Subsection (2) above and except on materials,
          tools, supplies and vendor-type equipment purchased by Landlord to
          enable Landlord to supply services Landlord might otherwise contract
          for with a third party where such depreciation, amortization and
          interest payments would otherwise have been included in the charge for
          such third party's services, all as determined in accordance with
          generally accepted accounting principles, consistently applied, and
          when depreciation or amortization is permitted or required, the item
          shall be amortized over its reasonably anticipated useful life;

                    (7) Marketing costs including leasing commissions,
          attorneys' fees in connection with the negotiation and preparation of
          leases, space planning costs, and other costs and expenses incurred in
          connection with lease, sublease and/or assignment negotiations and
          transactions with present or prospective tenants or other occupants of
          the Building;

                    (8) Expenses in connection with services or other benefits
          which are not offered to Tenant or for which Tenant is charged
          directly;

                    (9) Costs incurred by Landlord due to the violation by
          Landlord or any tenant of the terms and conditions of any lease of
          space in the Building;

                    (10) Overhead and profit increment paid to Landlord or to
          subsidiaries or affiliates of Landlord for goods and/or services in
          the Building to the extent the same exceeds the costs of such goods
          and/or services rendered by unaffiliated third parties on a
          competitive basis to projects or buildings of a comparable quality;

                    (11) Interest, principal, points and fees on debts or
          amortization on any mortgage or mortgages or any other debt instrument
          encumbering the Building or the land on which the Building is located
          (except as permitted in Subsection (2) above);

                    (12) Landlord's general corporate overhead and general
          administrative expenses;

                    (13) Any compensation paid to clerks, attendants or other
          persons in commercial concessions operated by Landlord (other than
          parking attendants);

                    (14) Except for making repairs or keeping permanent systems
          in operation while repairs are being made, rentals and other related
          expenses incurred in leasing air conditioning systems, elevators or
          other equipment ordinarily considered to be of a capital nature,
          except equipment not affixed to the Building which is used in
          providing janitorial or similar services;

                    (15) Advertising and promotional expenditures, and costs of
          signs in or on the Building identifying the owner of the Building or
          other tenants' signs (but not directional signs);

                    (16) Electric power costs for which any tenant directly
          contracts with the local public service company (but such space shall
          be treated as vacant for electrical gross-up purposes);

                    (17) Costs incurred in connection with the operation of any
          retail or restaurant operations in the Building, to the extent such
          costs exceed the amount which would reasonably be expected to have
          been incurred had such space been used for general office purposes;

                    (18) Costs incurred in connection with upgrading the
          Building to comply with handicap, life, fire and safety codes in
          effect prior to the Commencement Date;

                    (19) Tax penalties incurred as a result of Landlord's
          negligence, inability or unwillingness to make payments and/or to file
          any income tax or informational returns when due;

                    (20) All assessments shall be paid by Landlord in the
          maximum number of

                                      -3-
<PAGE>   8

          installments permitted by law and not included as Operating Expenses
          except in the year in which the assessment or premium installment is
          actually paid; provided, however, that if the prevailing practice in
          other comparable office buildings in the vicinity of the Building is
          to pay such assessments on an earlier basis, such assessments may be
          included in Operating Expenses as paid by Landlord;

                    (21) Separate charges for services included within the scope
          of services for which a management fee is charged;

                    (22) Costs arising from the gross negligence or willful
          misconduct of Landlord or its agents, or any vendors, contractors, or
          providers of materials or services selected, hired or engaged by
          Landlord or its agents including, without limitation, the selection of
          Building materials;

                    (23) Notwithstanding any contrary provision of this Lease,
          including, without limitation, any provision relating to capital
          expenditures, costs arising from the presence of hazardous materials
          or substances (as defined by Laws) in or about the Building or land
          upon which the Building is located including, without limitation,
          hazardous substances in the ground water or soil;

                    (24) Costs arising from Landlord's or another tenant's gross
          negligence or willful misconduct;

                    (25) Costs arising from Landlord's charitable or political
          contributions;

                    (26) Costs arising from latent defects in the base, shell or
          core of the Building or in improvements installed by Landlord prior to
          the Commencement Date, or repair of such latent defects;

                    (27) Costs for sculpture, paintings or other objects of art
          (but not maintenance and repair);

                    (28) Costs (including in connection therewith all attorneys'
          fees and costs of settlements or judgments and payments in lieu
          thereof) arising from claims, disputes or potential disputes in
          connection with potential or actual claims or litigation or
          arbitrations pertaining to the Landlord and/or the Building;

                    (29) Operating Expenses will exclude any expenses related to
          Landlord's responsibility to comply and conform with laws or codes in
          effect as of the Commencement Date relating to disabled access,
          including without limitation requirements of the Americans With
          Disabilities Act or any regulations promulgated in connection
          therewith and in effect as of the Commencement Date; and

                    (30) Any costs charged to the Building pursuant to the REA
          or any amendment to or substitution therefore, which, if arising in
          connection with the operation and maintenance of the Building, would
          have been excluded from Operating Expenses by reason of these
          exclusions.

          1.15 "Premises" shall mean that space outlined on the floor plan
attached to this Lease as Exhibit "B" and incorporated herein. The Premises are
stipulated for all purposes to contain three thousand six hundred eighty nine
(3,689) square feet of Rentable Area.

          1.16 "REA" shall mean (i) that certain Amendment and Restatement of
the Grant of Reciprocal E-asements and Declaration of Covenants (Phase I)
recorded in the Official Records of Clark County, Nevada on September 8, 1995,
in Book 950908 as Instrument No. 01919 as may be amended from time to time and
(ii) that certain Howard Hughes Declaration of Covenants recorded in the
Official Records of Clark County, Nevada on October 11, 1985 in Book 2199 as
Instrument No. 2158547, as amended by the First Amendment to Howard Hughes
Center Declaration of Covenants dated August 28, 1995 recorded in the Official
Records of Clark County, Nevada on September 8, 1995 in Book 950908, Instrument
No. 01918 and as further amended by the Second Amendment to Howard Hughes Center
Declaration of Covenants dated November 27, 1995, recorded in the Official
Records of Clark County, Nevada on December 6, 1995 in Book 951206, Instrument
No. 00257 as may be amended from time to time; provided, however, that no such
further amendment or supplement shall in any event decrease Tenant's rights,
materially increase Tenant's financial obligations, or increase Tenant's
non-financial obligations under this Lease.

          1.17 "Real Property Taxes" shall mean and include any form of tax,
assessment, license fee, license tax, business license fee, commercial rental
tax, levy, charge, penalty, tax or similar imposition, imposed by any authority
having the direct power to tax, including any city, county, state or federal

                                      -4-
<PAGE>   9

government, or any school, lighting, drainage, transportation, air pollution,
environmental or other improvement or special assessment district thereof, as
against any legal or equitable interest of Landlord in the Building and/or the
Premises, including, but not limited to, the following: (a) any tax on
Landlord's "right" to rent or "right" to other income from the Premises or as
against Landlord's business of leasing the Premises; (b) any assessment, tax,
fee, levy or charge in substitution, partially or totally, of any assessment,
tax, fee, levy or charge previously included within the definition of Real
Property Taxes (it is the intention of Tenant and Landlord that all such new and
increased assessments, taxes, fees, levies and charges be included within the
definition of "Real Property Taxes" for the purposes of this Lease); (c) any
assessment, tax, fee, levy or charge allocable to or measured by the area of the
Premises or the rent payable hereunder, including, without limitation, any gross
income tax or excise tax levied by the state, county, city or federal
government, or any political subdivision thereof, with respect to the receipt of
such rent, or upon or with respect to the possession, leasing, operating,
management, maintenance, alteration, repair, use or occupancy of the Building,
or any portion thereof; (d) any assessment, tax, fee, levy or charge upon this
transaction creating or transferring an interest or an estate in the Premises;
(e) any assessment, tax, fee, levy or charge based upon the number of people
employed, working at, or using the Premises or the Building, or utilizing public
or private transportation to commute to the Premises or the Building; and (f)
reasonable legal and other professional fees, costs and disbursements incurred
in connection with proceedings to contest, determine or reduce Real Property
Taxes.

          Real Property Taxes shall not include federal or state income,
franchise, inheritance or estate taxes of Landlord or any of the parties which
comprise Landlord.

          1.18 "Rentable Area" of the Premises shall mean the total of the
following measurements to be determined by Landlord: (a) the entire area
included within the Premises, being the area bounded by the inside surface of
any exterior glass walls (or the inside surface of the permanent exterior wall
where there is no glass) of the Building bounding the Premises, the exterior of
all walls separating the Premises from any public corridors or other public
areas, and the centerline of all walls separating the Premises from other areas
leased or to be leased to other tenants, (b) a pro rata portion based on the
space occupied on the floor or floors on which the Premises is located (the
"Floor(s)") of the areas covered by the elevator lobbies, corridors, restrooms,
and by mechanical rooms, electrical rooms and telephone closets situated on the
Floor(s) (such pro rata portion shall be the same percentage that the amount of
Rentable Area in the Premises bears to the Rentable Area on the Floor(s) on
which the Premises is located), other than those servicing the entire Building,
and (c) a pro rata portion of the lobby area on the ground floor of the Building
and of the area of the Building containing the electrical/emergency equipment,
fire pump equipment, electrical switching gear, telephone equipment, mail
delivery room and other facilities serving the Building (such pro rata portion
shall be the same percentage that the amount of Rentable Area of the Premises
bears to the total Rentable Area in the entire Building). The Building is
stipulated for all purposes to contain eighty-five thousand nine hundred
twenty-three (85,923) square feet of Rentable Area.

          1.19 "Security Deposit" shall mean the sum of Seventeen Thousand Four
Hundred Eighty-Five Dollars and Eighty-Six Cents ($17,485.86). The Security
Deposit shall be paid to Landlord by Tenant contemporaneously with Tenant's
execution hereof.

          1.20 "Tenant's Share" shall be a fraction of which the numerator is
the Rentable Area of the Premises as set forth in Section 1.15 and the
denominator is the Rentable Area in the Building as set forth in Section 1.18.

          1.21 "Usable Area" for the Premises shall mean the Rentable Area for
the Premises, minus the following reductions as determined by Landlord: (a) the
Premises pro rata portion of the lobby area on the ground floor and
electrical/emergency equipment, fire pump equipment, electrical switching gear,
telephone equipment, mail delivery facilities, elevator penthouse, security
rooms, trash rooms and other areas which service the entire Building as
specified in the definition of Rentable Area, and (b) the Premises' pro rata
portion of the space occupied on the Floor(s) of the Premises covered by the
elevator lobbies, corridors, restrooms, mechanical rooms, electrical rooms and
telephone closets situated on such Floors as specified in the definition of
Rentable Area.

          1.22 "Commencement Memorandum" shall mean a document similar to
Exhibit "F" attached hereto. The Commencement Memorandum, among other things,
shall contain a reference to the Rentable Area of the Premises and Useable Area
of the Premises. Tenant agrees that the Rentable Area and Useable Area of
the Premises stated in the Commencement Memorandum shall be binding throughout
the Lease Term.

                                    ARTICLE 2
                                   LEASE GRANT

                                       -5-
<PAGE>   10

          Subject to and upon the terms and conditions herein set forth,
Landlord leases to Tenant and Tenant leases from Landlord the Premises.

                                      -6-
<PAGE>   11

                                    ARTICLE 3

                                   LEASE TERM

          Landlord will be deemed to have delivered to Tenant possession of the
Premises in its "as is" condition as of the Commencement Date. Tenant
acknowledges that neither Landlord nor its agents or employees have made any
representations or warranties as to the suitability or fitness of the Premises
for the conduct of Tenant's business or for any other purpose, nor has
Landlord or its agents or employees agreed to undertake any alterations or
construct any tenant improvements to the Premises except that Landlord agrees to
clean the carpeting of the Useable Area of the Premises and apply touch-up paint
where needed within the Premises, as determined by Landlord in its sole
discretion, and at its sole cost and expense. If for any reason Landlord cannot
deliver possession of the Premises to Tenant on or before the fixed date
component of the Commencement Date, this Lease will not be void or voidable, and
Landlord will not be liable to Tenant for any resultant loss or damage.

                                    ARTICLE 4

                        USE OF PREMISES AND COMMON AREAS

          4.1 PREMISES.

          The Premises shall be used for general office purposes and for no
other purposes. Tenant will use the Premises in a careful, safe, and proper
manner. Tenant agrees not to use or permit the use of the Premises for any
purpose which is illegal or prohibited by any applicable Laws, or which, in
Landlord's opinion, creates a nuisance or would increase the cost of insurance
coverage with respect to the Building. Tenant shall not use or occupy the
Premises in violation of such rules and regulations described in Article 15
below nor in violation of the REA or any other recorded covenants, conditions or
restrictions affecting the Building. Tenant shall not place a load upon the
Premises exceeding the average pounds live load per square foot of floor area
specified for the Building by Landlord's architect, with the partitions to be
considered part of the live load. Landlord reserves the right to prescribe the
weight and position of all safes, files and heavy equipment which Tenant desires
to place in the Premises so as to distribute properly the weight thereof.

          4.2  COMMON AREAS OF BUILDING.

          Tenant shall have the nonexclusive right to use in common with other
tenants in the Building, and subject to the rules of the Building referred to in
Article 15 below, the following areas ("Common Areas") appurtenant to the
Premises:

                    (i) The common entrances, lobbies, restrooms, elevators,
          stairways and accessways, loading docks, ramps, drives and platforms
          and any passageways and serviceways thereto, and the common pipes,
          conduits, wires and appurtenant equipment serving the Premises;

                    (ii) Parking areas (subject to the provisions of the Parking
          Agreement attached hereto as Exhibit "C"), loading and unloading
          areas, trash areas, roadways, sidewalks, walkways, parkways, driveways
          and landscaped areas appurtenant to the Building.

          4.3 LANDLORD'S RIGHTS IN COMMON AREAS.

          Landlord reserves the right from time to time without unreasonable
          interference with Tenant's use:

                    (i) To install, use, maintain, repair and replace pipes,
          ducts, conduits, wires and appurtenant meters and equipment for
          service to other parts of the Building above the ceiling surfaces,
          below the floor surfaces, within the walls and in the central core
          areas, and to relocate any pipes, ducts, conduits, wires and
          appurtenant meters and equipment included in the Premises which are
          located in the Premises or located elsewhere outside the Premises, and
          to expand the Building;

                    (ii) To make changes to the Common Areas, including,
without limitation, changes in the location, size, shape and number of
driveways, entrances, loading and unloading areas, ingress, egress, direction
of traffic, landscaped areas and walkways and, subject to the Parking
Agreement, parking spaces and parking areas;

                    (iii) To close temporarily any of the Common Areas for
maintenance purposes so long as reasonable access to the Premises remains
available;

                    (iv) To use the Common Areas while engaged in making
additional improvements, repairs or alterations to the Building, or any portion
thereof; and

                                      -7-
<PAGE>   12

                  (v) To do and perform such other acts and make such other
         changes in, to or with respect to the Common Areas and Building as
         Landlord may, in the exercise of sound business judgment, deem to be
         appropriate.

                                    ARTICLE 5

                          BASE RENT AND ADDITIONAL RENT

          5.1 BASE RENT.

          Tenant agrees to pay to Landlord during the Lease Term, without any
setoff or deduction whatsoever the Base Rent, and all such other sums of money
as shall become due hereunder as Additional Rent. Should Tenant fail to pay any
Additional Rent in a timely manner, Landlord shall be entitled to exercise all
such rights and remedies as are herein provided in the case of the nonpayment of
Base Rent. The annual Base Rent for each calendar year or portion thereof during
the Lease Term, together with estimated Additional Rent pursuant to Article 6
hereof then in effect, shall be due and payable in advance, in lawful money of
the United States of America which shall be legal tender at the time of payment,
in twelve (12) equal installments on the first day of each calendar month during
the initial term of this Lease and any extensions or renewals thereof, and
Tenant hereby agrees to pay such Base Rent and Additional Rent to Landlord at
Landlord's address provided herein (or such other address as may be designated
by Landlord in writing from time to time) monthly, in advance, and without
demand. If the Lease Term commences on a day other than the first day of a month
or terminates on a day other than the last day of a month, then the installments
of Base Rent and Additional Rent for such month or months shall be prorated,
based on the number of days in such month.

          5.2 [INTENTIONALLY OMITTED]

          5.3 ADDITIONAL RENT.

          All charges payable by Tenant hereunder other than Base Rent
(including, without limitation, Operating Expenses payable pursuant to Article 6
below) are called "Additional Rent." Unless this Lease provides otherwise, all
Additional Rent shall be paid with the next monthly installment of Base Rent.
Base Rent and Additional Rent are sometimes referred to collectively as "Rent."

          5.4 INTEREST ON LATE PAYMENTS.

          All installments of Rent not paid when due and payable shall bear
interest at the Lease Interest Rate from the date due until paid. In addition,
if any installment of Rent is not received by Landlord within five (5) days
after notice that said amount is past due from Landlord to Tenant, Tenant shall
pay to Landlord, as Additional Rent, five percent (5%) of the overdue amount as
a late charge. Landlord's acceptance of any late charge or interest shall not
constitute a waiver of Tenant's default with respect to the overdue amount nor
prevent Landlord from exercising any of the other rights and remedies available
to Landlord under this Lease or any law now or hereafter in effect.

                                    ARTICLE 6

                              BASE RENT ADJUSTMENT

          The Base Rent payable hereunder shall be adjusted upward from time to
time in accordance with the following provisions:

                    (a) Tenant shall pay to Landlord as an adjustment to Rent,
          an amount equal to the excess (the "Excess") from time to time of
          total annual Operating Expenses per square foot of Rentable Area of
          the Premises, as Grossed-Up, over and above the Expense Stop. The
          Excess shall be obtained by multiplying (i) the difference between the
          annual Operating Expense per square foot of Rentable Area in the
          Building and the Expense Stop, by (ii) the total Rentable Area of the
          Premises as set forth in Section 1.15. Such amount shall be paid in
          advance in monthly installments on the same dates as Base Rent is due
          and payable hereunder based on Landlord's notice to Tenant from time
          to time good faith estimate of the Operating Expenses for the current
          calendar year. Landlord shall have the right to adjust such amount no
          more than once a year to reflect any changes in Landlord's estimate of
          Operating Expenses.

                    (b) By April 1 of each calendar year during the Lease Term,
          or as soon thereafter as practicable but no later than May 1, Landlord
          shall furnish to Tenant a statement ("Actual Statement") of Landlord's
          annual Operating Expenses, as Grossed-Up, for the previous calendar
          year. If for any calendar year the amounts collected from Tenant

                                      -8-

<PAGE>   13

          for the prior year, as a result of Landlord's estimate of Operating
          Expenses, exceeds the amount of the Excess actually due during such
          prior year, then Landlord shall refund to Tenant any overpayment (or
          at Landlord's option, apply such amount against Rent due or to become
          due hereunder). Likewise, Tenant shall pay to Landlord, on demand,
          any underpayment with respect to the prior year.

                    (c) In the event of any good faith dispute as to the amount
          of the Excess as set forth in the statement of actual Operating
          Expenses, Tenant shall have the right, no more frequently than once
          per calendar year, after reasonable notice to Landlord and at
          reasonable times, to inspect and photocopy Landlord's Operating
          Expenses records at Landlord's offices. If, after such inspection and
          photocopy, Tenant continues, in good faith, to dispute the amount of
          the Excess as set forth in said statement, Tenant shall be entitled
          not later than one (1) year following Tenant's receipt of an Actual
          Statement to retain a national, independent, certified public
          accountant who is not contracted on a contingency fee basis and is
          mutually acceptable to Landlord and Tenant to audit Landlord's
          Operating Expenses records with respect to the calendar year covered
          by Actual Statement to determine the proper amount of the Excess.
          Landlord shall be entitled to review the results of such audit
          promptly after completion of same. If the results of such audit prove
          that Landlord has overcharged Tenant, then within fifteen (15) days
          after the results of the audit are made available to Landlord,
          Landlord shall credit Tenant the amount of such overcharge toward the
          payments of Base Rent and Additional Rent next coming due under this
          Lease. If such audit proves that Landlord has undercharged Tenant,
          then within fifteen (15) days after the results of the audit are made
          available to Tenant, Tenant shall pay to Landlord the amount of any
          such undercharge. Tenant agrees to pay the cost of such audit,
          provided that Landlord shall reimburse Tenant the amount of such cost
          if the results of such audit prove that Landlord's determination of
          the Operating Expenses (as set forth in the Actual Statement) was in
          error by more than six percent (6%). If Tenant does not request an
          audit in accordance with the provisions of this Section 6(c) within
          one (1) year after Tenant's receipt of an Actual Statement, such
          Actual Statement shall be conclusively binding upon Tenant. Landlord
          shall be required to maintain records of all Operating Expenses for
          three (3) years following the issuance of the Operating Expense
          statement for such Operating Expenses. The payment by Tenant of any
          amounts pursuant to this article shall not preclude Tenant from
          questioning the correctness of any such statement

                                    ARTICLE 7

                      SERVICES TO BE FURNISHED BY LANDLORD

          Landlord agrees to furnish Tenant the following services as an
Operating Expense for the Building (except as specifically provided below):

                    (a) Hot and cold water at those points of supply provided
          for general use of other tenants in the Building, central heat and air
          conditioning in season, at such temperatures and in such amounts as
          are considered by Landlord to be standard or as required by
          governmental authority; provided, however, heating and air
          conditioning service at times other than "Normal Business Hours" for
          the Building (which are 8:00 a.m. to 6:00 p.m. on Mondays through
          Fridays and 8:00 a.m. to 1:00 p.m. on Saturdays, exclusive of normal
          holidays), shall be furnished upon receipt of a phone request by
          Tenant utilizing Landlord's computer which permits Tenants to make
          phone requests for such heating and air conditioning services, Tenant
          shall bear the entire cost of such additional service as such costs
          are determined by Landlord from time to time. Currently, Landlord is
          charging Forty-five and 00/100 Dollars ($45.00) per hour for each hour
          of other than "Normal Business Hours" heating and air conditioning
          service. Notwithstanding anything to the contrary contained herein,
          Tenant shall be permitted, at its sole cost and expense, to install a
          supplemental HVAC unit ("Supplemental HVAC Unit") to service the
          computer rooms within the Promises, which shall only service an area
          not to exceed Two Hundred Fifty (250) square feet of Usable Area and
          shall operate twenty-four (24) hours a day, seven (7) days per week
          and fifty-two (52) weeks per year. The Supplemental HVAC Unit shall
          not interfere with the operation of any systems or equipment for the
          Building. Tenant shall be solely responsible for repair, maintenance
          and operation of the Supplemental HVAC Unit and the compressor located
          on the roof of the Building. Tenant shall pay the Landlord, as
          Additional Rent, all additional costs for electrical power usage
          caused by Tenant's use of Supplemental HVAC Unit. Upon the expiration
          or earlier termination of the Lease, Tenant shall remove the
          Supplemental HVAC Unit and repair any damage caused by such removal.
          Landlord shall not be responsible for, and Tenant waives any claim it
          may assert against Landlord, for any failure of the Supplemental HVAC
          Unit.

                                      -9-
<PAGE>   14

                    (b) Routine maintenance and electric lighting service for
          all Common Areas and service areas of the Building in the manner and
          to the extent deemed by Landlord to be standard.

                    (c) Janitorial service, five (5) days a week, exclusive of
          normal holidays; provided, however, if Tenant's floor covering or
          other improvements require special treatment, Tenant shall pay the
          additional cleaning cost attributable thereto as Additional Rent upon
          presentation of a statement therefor by Landlord.

                    (d) Subject to the provisions of Article 13, facilities to
          provide all electrical current required by a typical office user, as
          determined by Landlord, in its use and occupancy of the Premises.

                    (e) All Building Standard fluorescent bulb replacement in
          the Premises and fluorescent and incandescent bulb replacement in the
          Common Areas of the Building.

                    (f) Security in the form of limited access to the Building
          during other than Normal Business Hours shall be provided in such form
          as Landlord deems appropriate. Landlord may charge a fee for card keys
          or other security devices. Landlord, however, shall have no liability
          to Tenant, its employees, agents, invitees or licensees for losses due
          to theft or burglary, or for damages resulting from the actions of
          unauthorized persons on the Premises or in the Building and Landlord
          shall not be required to insure against any such losses. Tenant shall
          cooperate fully in Landlord's efforts to maintain security in the
          Building and shall follow all regulations promulgated by Landlord
          which respect thereto.

                    (g) Access to the Premises, the Building, and the parking
          facilities twenty-four (24) hours a day, seven (7) days per week and
          fifty-two (52) weeks per year; provided, however, such access shall be
          limited by the Building access system, parking facilities access
          system, and temporary closures that may be necessary to maintain the
          Building and/or parking facilities.

          The failure by Landlord to any extent to furnish, or the interruption
or termination of these defined services in whole or part, resulting from causes
beyond the reasonable control of Landlord shall not render Landlord liable in
any respect nor be construed as an eviction of Tenant, nor work an abatement of
Rent, nor relieve Tenant from the obligation to fulfill any covenant or
agreement hereof. Should any of the equipment or machinery used in the provision
of such services for any cause cease to function properly, Tenant shall have no
claim for offset or abatement or rent or damages on account of an interruption
in service resulting therefrom.

          Notwithstanding the foregoing, in the event there is an interruption
of essential building services to the Building such that the Premises are unfit
for the conduct of Tenant's business for a period in excess of three (3)
consecutive days, then Tenant's Rent shall be abated until such time as
essential building services are restored to the extent that the Premises are fit
for the conduct of Tenant's business.

                                    ARTICLE 8

                       IMPROVEMENTS TO BE MADE BY LANDLORD

          All installations and improvements now or hereafter placed on the
Premises shall be for Tenant's account and at Tenant's cost (and Tenant shall
pay ad valorem taxes and the cost of any increased insurance premiums thereon or
attributable thereto), which cost shall be payable by Tenant to Landlord upon
demand as Additional Rent. Provided Tenant is not in default under the Lease,
Tenant shall receive from Landlord on October 1, 2000, an Allowance in the
amount set forth in Section 1.2 of the Lease toward the cost of refurbishment to
Premises. The refurbishments ("Refurbishments") to the Premises shall be done at
Tenant's sole cost and expense and in accordance with Landlord's requirements.
Tenant shall pay Landlord a fee equal to five percent (5%) of the costs of the
Refurbishments for administration by Landlord of the Refurbishments.

                                   ARTICLE 9
                 MAINTENANCE AND REPAIR OF PREMISES BY LANDLORD

     Except as otherwise expressly provided herein, Landlord shall not be
required to perform any maintenance or to make any repairs to the Premises.

                                      -10-
<PAGE>   15

                                   ARTICLE 10

                                    GRAPHICS

          Landlord shall provide and install, at Tenant's cost, all letters or
numerals on doors in the Premises; all such letters and numerals shall be in the
standard graphics for the Building and no others shall be used or permitted on
the Premises without Landlord's prior written consent. Tenant shall have the
right to designate one (1) name on the directory board in the lobby of the
Building. Landlord shall have the option to maintain, in place of the directory
board in the lobby of the Building, a computerized directory with display screen
which has the capacity to accommodate Tenant's name designation.

                                   ARTICLE 11

                         CARE OF THE PREMISES BY TENANT

          Tenant agrees not to commit or allow any waste to be committed on any
portion of the Premises, and at the termination of this Lease agrees to deliver
up the Premises to Landlord in as good condition as at the Commencement Date of
this Lease, ordinary wear and tear excepted.

                                   ARTICLE 12

                        REPAIRS AND ALTERATIONS BY TENANT

          Tenant covenants and agrees that Tenant shall be responsible, at
Tenant's own cost and expense, for costs incurred by Landlord to repair or
replace any damage done to the Building, or any part thereof, caused by Tenant
or Tenant's agents, employees, invitees, or visitors, to as good a condition as
it was in prior to such damage. Tenant shall, when and if needed or whenever
requested by Landlord to do so, at Tenant's sole cost and expense, maintain and
make all repairs to the Premises and the improvements therein, to keep, maintain
and preserve the Premises in first-class condition, excepting ordinary wear and
tear. Any such maintenance and repairs shall be performed by a contractor
approved by Landlord. If Tenant fails to make such repairs or replacements
promptly, Landlord may, at its option, make repairs or replacements, and Tenant
shall pay the cost thereof to Landlord on demand as Additional Rent. Tenant
agrees with Landlord not to make or allow to be made any alterations to the
Premises, install any vending machines on the Premises, or place signs on the
Premises which are visible from outside the Premises, without first obtaining
the written consent of Landlord in each such instance, which consent may be
given on such conditions as Landlord may elect. Tenant shall deliver to
Landlord, for Landlord's approval prior to the construction of any alterations,
a complete set of plans and specifications for the proposed alterations,
additions or improvements, copies of contracts with general contractors,
evidence of contractor's insurance and bonds, and all necessary permits for such
construction. Landlord may require Tenant to provide demolition and/or lien and
completion bonds in form and amount satisfactory to Landlord. All alterations,
additions, and improvements will be accomplished in a good and workmanlike
manner, in conformity with all applicable laws, and by a contractor approved by
Landlord. Landlord's approval of the plans, specifications and working drawings
for Tenant's alterations shall create no responsibility or liability on the part
of Landlord for their completeness, design, sufficiency, or compliance with all
laws, rules and regulations of governmental agencies or authorities. Upon
completion of any such work, Tenant shall provide Landlord with "as built"
plans, copies of all construction contracts, and proof of payment for all labor
and materials. Any and all alterations to the Premises shall become the property
of Landlord upon termination of this Lease (except for movable equipment or
furniture owned by Tenant). Landlord may, nonetheless, require Tenant to remove
any and all fixtures, equipment and other improvements installed on the
Premises. In the event that Landlord so elects, and Tenant fails to remove such
improvements, Landlord may remove such improvements at Tenant's cost, and Tenant
shall pay Landlord on demand the cost of restoring the Premises to the condition
that existed immediately prior to the construction of such improvements.

                                   ARTICLE 13

                      USE OF ELECTRICAL SERVICES BY TENANT

Tenant's use of electrical services furnished by Landlord shall be subject to
the following:

     (a) Landlord agrees to furnish to the Premises, at no extra cost to Tenant
but as an Operating Expense, five (5) watts of electric current, connected
load, per square foot of Usable Area during Normal Business Hours within the
Premises on an annualized basis for normal lighting, normal fractional
horsepower office machines, and HVAC as required in Landlord's judgment for the
use and occupation of the Premises.

                                      -11-
<PAGE>   16

                    (b) In the event that Tenant requires or uses more electric
          power than specified in Section 13(a) above, Landlord may, at
          Landlord's option, require Tenant to pay the cost as reasonably
          determined by Landlord of such extraordinary usage as Additional Rent.
          In addition, Landlord may install checkmeters in or for the Premises,
          at Tenant's sole cost and expense, and tenant shall thereafter pay all
          charges of the utility company providing electric service and Landlord
          shall make an appropriate adjustment to Tenant's obligation to pay a
          proportionate share of the Operating Expenses to account for the fact
          that Tenant is directly paying such metered charges.

                                   ARTICLE 14
                              LAWS AND REGULATIONS

          14.1 GENERAL.

          At its sole cost and expense, Tenant will promptly comply with all
Laws, statutes, ordinances, and governmental rules, regulations, or requirements
now in force or in force after the Commencement Date, with the requirements of
any board of fire underwriters or other similar body constituted now or after
the date, with any direction or occupancy certificate issued pursuant to any law
by any public officer or officers, as well as with the provisions of all
recorded documents affecting the Premises, insofar as they relate to the
condition, use, or occupancy of the Premises.

          Landlord, at its sole cost and expense, shall conform to and comply
with and shall cause the Property (excluding the Premises, except for Landlord's
obligations relating to the Premises set forth in the Lease) to conform to and
comply with all federal, state, county, municipal and other governmental
statutes, laws, rules, orders, regulations, and ordinances applicable to
Landlord or resulting from Landlord's use of the Property (excluding the
Premises) or any part thereof.

          14.2 HAZARDOUS MATERIALS.

                    (a) For purposes of this Lease, "Hazardous Materials" means
          any explosives, radioactive materials, hazardous wastes, or hazardous
          substances, including without limitation substances defined as
          "hazardous substances" in the Comprehensive Environmental Response,
          Compensation and Liability Act of 1980, as amended, 42 U.S.C.
          ## 9601-9657; the Hazardous Materials Transportation Act of 1975, 49
          U.S.C. ## 1801-1812; the Resource Conservation and Recovery Act of
          1976, 42 U.S.C. ## 6901-6987; or any other federal, state, or local
          statute, law, ordinance, code, rule, regulation, order, or decree
          regulating, relating to, or imposing liability or standards of conduct
          concerning hazardous materials, waste, or substances now or at any
          time hereafter in effect (collectively, "Hazardous Materials Laws").

                    (b) Tenant will not cause or permit the storage, use,
          generation, or disposition of any Hazardous Materials in, on, or about
          the Premises or the project by Tenant, its agents, employees, or
          contractors. Tenant will not permit the Premises to be used or
          operated in a manner that may cause the Premises or the project to be
          contaminated by any Hazardous Materials in violation of any Hazardous
          Materials Laws. Tenant will immediately advise Landlord in writing of
          (1) any and all enforcement, cleanup, remedial, removal, or other
          governmental or regulatory actions instituted, completed, or
          threatened pursuant to any Hazardous Materials Laws relating to any
          Hazardous Materials affecting the Premises; and (2) all claims made or
          threatened by any third party against Tenant, Landlord, or the
          Premises relating to damage, contribution, cost recovery,
          compensation, loss, or injury resulting from any Hazardous Materials
          on or about the Premises. Without Landlord's prior written consent,
          Tenant will not take any remedial action or enter into any agreements
          or settlements in response to the presence of any Hazardous Materials
          in, on, or about the Premises.

                    (c) Tenant will be solely responsible for and will defend,
          indemnify and hold Landlord, its agents, and employees harmless from
          and against all claims, costs, and liabilities, including attorneys'
          fees and costs, arising out of or in connection with Tenant's breach
          of its obligations in this Article 14. Tenant will be solely
          responsible for and will defend, indemnify, and hold Landlord, its
          agents, and employees harmless from and against any and all claims,
          costs, and liabilities, including attorneys' fees and costs, arising
          out of or in connection with the removal, cleanup, and restoration
          work and materials necessary to return the Premises and any other
          property of whatever nature located in, on, or about the Building,
          to their condition existing prior to the introduction of Hazardous
          Materials by

                                      -12-
<PAGE>   17

          Tenant, its agents, employees or contractors. Tenant's obligations
          under this Article 14 will survive the expiration or other termination
          of this Lease.

          Landlord warrants and represents to Tenant that to Landlord's actual
knowledge (but without investigation), there are no Hazardous Substances in
violation of any Environmental Laws in the Property of which the Premises are a
part.

          14.3 CERTAIN INSURANCE RISKS.

          Tenant will not do or permit to be done any act or thing upon the
Premises or the Building which would (i) jeopardize or be in conflict with fire
insurance policies covering the Building or covering any fixtures and property
in the Building; (ii) increase the rate of fire insurance applicable to the
Building to an amount higher than it otherwise would be for general office use
of the Building; or (iii) subject Landlord to any liability or responsibility
for injury to any person or persons or to property by reason of any business or
operation being carried on upon the Premises.

                                   ARTICLE 15

                                 BUILDING RULES

          Tenant will comply with the rules of the Building which are attached
hereto as Exhibit "E" and incorporated herein by this reference, as such rules
are reasonably adopted and altered by Landlord from time to time and will cause
all of its agents, employees, invitees and visitors to do so; all changes to
such rules will be sent by Landlord to Tenant in writing.

          All rules and regulations promulgated by Landlord shall be reasonable,
shall not materially alter the terms of this Lease and any enforcement shall be
uniform with respect to all tenants' use and occupancy of the Building and
Common Area.

                                   ARTICLE 16

                                ENTRY BY LANDLORD

          Tenant agrees to permit Landlord or its agents or representatives to
enter into and upon any part of the Premises at all reasonable hours (and in
emergencies at all times) to inspect the same, or to show the Premises to
prospective purchasers, Mortgagees, tenants or insurers, to clean or make
repairs, alterations or additions thereto, and Tenant shall not be entitled to
any abatement or reduction of rent by reason thereof.

          Notwithstanding the foregoing, Landlord shall use reasonable efforts
to telephone Tenant twenty-four (24) hours prior to any inspection except in
cases of emergencies. Emergencies for the purpose of this Section shall be
deemed to mean anyone or anything in the Premises, Building and/or Common Area
requiring immediate response. In any event, Tenant agrees to cooperate when
access to the Premises is requested by Landlord.

                                   ARTICLE 17
                            ASSIGNMENT AND SUBLETTING

          17.1 Tenant shall not assign, sublease, transfer or encumber this
Lease or any interest therein. Any attempted assignment or sublease by Tenant in
violation of the terms and covenants of this Article 17 shall be void.

          17.2 If Tenant requests Landlord's consent to an assignment of this
Lease or subletting of all or part of the Premises, Landlord shall have the
option (without limiting Landlord's other rights hereunder) of terminating this
Lease upon thirty (30) days notice. Landlord may then, at Landlord's option,
lease space to the prospective assignee or subtenant. If Landlord should fail to
notify Tenant in writing of its decision within a thirty (30) day period after
Landlord is notified in writing of the proposed assignment or sublease,
Landlord shall be deemed to have refused to consent to such proposed assignment
or sublease, and to have elected to keep this Lease in full force and effect.

         17.3 All cash or other proceeds of any assignment, sale or sublease of
Tenant's interest in this Lease, whether consented to by Landlord or not, shall
be paid to Landlord notwithstanding the fact that such proceeds exceed the Rent
called for hereunder, unless Landlord agrees to the contrary in writing, and
Tenant hereby assigns all rights it might have or ever acquire in any such
proceeds to Landlord. This covenant and assignment shall run with the land and
shall bind Tenant and Tenant's heirs, executors, administrators, personal
representatives, successors and assigns. Any assignee, sublessee or purchaser
of Tenant's interest in this Lease (all such assignees, sublessees and
purchasers being hereinafter referred to as "Successors"),

                                      -13-
<PAGE>   18

by assuming Tenant's obligations hereunder, shall assume liability to Landlord
for all amounts paid to persons other than Landlord by such Successor in
consideration of any such sale, assignment or subletting, in violation of the
provisions hereof.

          17.4 No assignment, sublease or other transfer consented to by
Landlord, shall release Tenant or change Tenant's primary liability to pay the
rent and to perform all other obligations of Tenant under this Lease. Upon the
occurrence of any default under this Lease, Landlord may proceed directly
against Tenant without the necessity of exhausting any remedies against any
subtenant or assignee. Upon termination of this Lease, any permitted subtenant
shall, at Landlord's option, attorn to Landlord and shall pay all Rent directly
to Landlord. Landlord's acceptance of Rent from any other person shall not
constitute a waiver of any provision of this Article 17. Consent to one transfer
shall not constitute a consent to any subsequent transfer. Landlord may consent
to subsequent assignments or modifications of this Lease by Tenant's transferee,
without notifying Tenant or obtaining its consent. Such action shall not relieve
Tenant of its liability under this Lease.

          17.5 No merger shall result from Tenant's sublease of the Premises
under this Article 17, Tenant's surrender of this Lease or the termination of
this Lease in any other manner. In any such event, Landlord may terminate any or
all subtenancies or succeed to the interest of Tenant as sublandlord
thereunder.

          17.6 Notwithstanding anything to the contrary contained in this
Article 17, an assignment or subletting of all or a portion of the Premises to
an "Affiliate" of Tenant shall not be deemed a transfer under this Article 17,
provided that (a) Tenant notifies Landlord of any such assignment or sublease
within fifteen (15) days after its effective date, and promptly supplies
Landlord with any documents or information reasonably requested by Landlord
regarding such assignment or sublease or such "Affiliate" and (b) such
assignment or sublease is not a subterfuge by Tenant to avoid its obligations
under this Lease. The term "Affiliate" of Tenant shall mean any other entity
which is controlled by, controls, or is under common control with Tenant, or to
an entity that results from a reorganization, merger, or the sale of
substantially all the assets or stock of Tenant. The term "control" or
"controlled," as used in this Section 17.6, shall mean the ownership, directly
or indirectly, of more than fifty percent (50%) of the voting securities of, or
more than fifty percent (50%) of the voting interest in, any entity. In no event
shall a transfer, assignment, or subletting of all or a portion of the Premises
to an Affiliate release Tenant from the payment and performance of its
obligations in the Lease, but rather Tenant and its assignee will be jointly and
severally primarily liable for such payment and performance.

                                   ARTICLE 18
                                      LIENS

          Tenant will not permit any mechanic's lien(s) or other liens to be
placed upon the Premises or the Building and nothing in this Lease shall be
deemed or construed in any way as constituting the consent or request of
Landlord, express or implied, by inference or otherwise, to any person for the
performance of any labor or the furnishing of any materials to the Premises, or
any part thereof, nor as giving Tenant any right, power, or authority to
contract for or permit the rendering of any services or the furnishing of any
materials that would give rise to any mechanics' or other liens against the
Premises. In the event any such lien is attached to the Premises, then, in
addition to any other right or remedy of Landlord, Landlord may, but shall not
be obligated to, discharge the same. Any amount paid by Landlord for any of the
aforesaid purposes shall be paid by Tenant to Landlord on demand as Additional
Rent.

                                   ARTICLE 19
                                    INSURANCE

          19.1 PROPERTY INSURANCE.

          Landlord shall maintain property coverage insurance on the Building
Shell and appurtenant structures in the Common Areas in such amounts as Landlord
and any Mortgagees may deem necessary or appropriate. Such insurance shall be
maintained at the expense of Landlord (as a part of Operating Expenses), and
payments for losses thereunder shall be made solely to Landlord or the
Mortgagees as their respective interests shall appear. Tenant shall obtain and
keep in force at all times during the Lease Term, a policy or policies of
insurance covering loss or damage to all of the improvements, betterments,
income and business contents located within the Premises other than the Building
Shell in the amount of the full replacement value thereof as ascertained by the
Tenant's insurance carrier, as the same may exist from time to time, against all
perils normally covered in an "all risk" policy (including the perils of flood
and surface waters), as such term is used in the insurance industry; provided,
however, that Tenant shall have no obligation to insure against earthquake.

                                      -14-
<PAGE>   19

          19.2 LIABILITY INSURANCE.

          Tenant shall, at Tenant's expense, maintain a policy of Commercial
General Liability insurance insuring Landlord and Tenant against liability
arising out of the ownership, use, occupancy or maintenance of the Premises.
Such insurance shall be on an occurrence basis providing single-limit coverage
in an amount not less than One Million Dollars ($1,000,000.00) per occurrence.
The initial amount of such insurance shall be subject to periodic increase upon
reasonable demand by Landlord based upon inflation, increased liability awards,
recommendation of professional insurance advisers, and other relevant factors.
However, the limits of such insurance shall not limit Tenant's liability nor
relieve Tenant of any obligation hereunder. Landlord shall be named as an
additional insured on said policies and the policies shall contain the following
provision: "Such insurance as afforded by this policy for the benefit of
Landlord shall be primary as respects any claims, losses or liabilities arising
out of the use of Premises by the Tenant or by Tenant's operation and any
insurance carried by Landlord shall be excess and non-contributing." The policy
shall insure Tenant's performance of the indemnity provisions of Articles 14 and
20.

          19.3 REQUIREMENTS FOR INSURANCE POLICIES.

          Insurance required to be maintained by Tenant hereunder shall be in
companies holding a "General Policyholders' Rating" of A or better and a
"financial rating" of 10 or better, as set forth in the most current issue of
"Best's Insurance Guide." Tenant shall promptly deliver to Landlord, within
thirty (30) days of the Commencement Date, original certificates evidencing the
existence and amounts of such insurance. No such policy shall be cancelable or
subject to reduction of coverage except after sixty (60) days prior written
notice to Landlord. Tenant shall, within thirty (30) days prior to the
expiration, cancellation or reduction of such policies, furnish Landlord with
renewals or "binders" thereof. Tenant shall not do or permit to be done anything
which shall invalidate the insurance policies required under this Lease.

          19.4 WAIVER OF SUBROGATION RIGHTS.

          Tenant and Landlord shall obtain from the issuer of the insurance
policies referred to in Section 19.1 a waiver of subrogation provision in said
policies and Tenant and Landlord hereby release, relieve and waive any and all
rights of recovery against Landlord or Tenant, or against the employees,
officers, agents and representatives of Landlord or Tenant, for loss or damage
arising out of or incident to the perils insured against under Section 19.1
which perils occur in, on or about the Premises or the Building, whether due to
the negligence of Landlord or Tenant or their agents, employees, contractors or
invitees. The extent of the waiver described in the immediately preceding
sentence is limited to the extent of insurance carried by Landlord and Tenant
pursuant to Section 19.1 of this Lease.

                                   ARTICLE 20

                                    INDEMNITY

          Tenant shall indemnify and hold harmless Landlord and all agents,
servants and employees of Landlord from and against all claims, losses, damages,
liabilities, expenses (including reasonable attorneys' fees), penalties and
charges arising from or in connection with (i) Tenant's use of the Premises
during the Lease Term, or (ii) the conduct of Tenant's business, or (iii) any
activity, work or things done, permitted or suffered by Tenant in or about the
Premises during the Lease Term. Tenant shall further indemnify and hold harmless
Landlord from and against any and all claims, loss, damage, liability, expense
(including reasonable attorneys' fees), penalty or charge arising from any
default in the performance of any obligation on Tenant's part to be performed
under the terms of this Lease, or arising from any negligence of Tenant, or any
of Tenant's agents, contractors, or employees, and from and against all costs,
attorneys' fees, expenses and liabilities incurred in the defense of any such
claim or any action or proceeding brought thereon. If any action or proceeding
be brought against Landlord by reason of any such claim, Tenant, upon notice
from Landlord, shall defend the same at Tenant's expense by legal counsel
reasonably satisfactory to Landlord. Tenant, as a material part of its
consideration to Landlord, hereby assumes all risk of damage to property or
injury to persons in or upon the Premises arising from any cause and Tenant
hereby waives all claims in respect thereof against Landlord. Notwithstanding
the foregoing, Tenant shall not be required to defend, save harmless or
indemnify Landlord from any liability for injury, loss, accident or damage to
any person or property resulting from Landlord's negligence or willful acts or
omissions, or those of Landlord's officers, agents, contractors or employees.
Tenant's indemnity is not intended to nor shall it relieve any insurance
carrier of its obligations under policies required to be carried by Tenant
pursuant to the provisions of this Lease to the extent that such policies cover
the results of negligent acts or omissions of Landlord, its officers, agents,
contractors or employees, or the failure of Landlord to perform any of its
obligations under this Lease.

                                      -15-
<PAGE>   20

          To the maximum extent permitted by law, Landlord shall indemnify, hold
harmless and defend Tenant, its agents, servants and employees from and against
all claims, actions, losses, costs and expenses (including attorneys' and other
professional fees), judgments, settlement payments, and, whether or not reduced
to final judgment, all liabilities, damages, or fines paid, incurred or suffered
by any third party to the extent arising directly or indirectly from (a) any
default by Landlord under the terms of this Lease, (b) the use or occupancy of
the Common Area by Landlord or its contractors, agents, or employees, and/or (c)
any acts or omissions of Landlord or any contractor, agent, or employee of
Landlord in or about the Common Area.

                                   ARTICLE 21
                                 PROPERTY DAMAGE

          If the Premises or any part thereof shall be damaged by fire or other
peril, Tenant shall give prompt written notice thereof to Landlord. In case the
Building shall be so damaged that substantial alteration or reconstruction of
the Building shall, in Landlord's sole opinion, be required (whether or not the
Premises shall have been damaged by such peril) or in the event any Mortgagee
shall require that the insurance proceeds payable as a result of a peril be
applied to the payment of the mortgage debt or in the event of any material
uninsured loss to the Building, Landlord may, at its option, terminate this
Lease by notifying Tenant in writing of such termination within ninety (90) days
after the date of such casualty. If Landlord does not thus elect to terminate
this Lease, Landlord shall, as Landlord's sole obligation, commence and proceed
with reasonable diligence to restore the Building Shell to substantially the
same condition in which it was immediately prior to the occurrence of the peril.
When the Building Shell has been restored by Landlord, Tenant shall complete the
restoration of the Premises, including the reconstruction of all improvements in
order to complete the Premises and restore the Premises to the same condition
and build-out as prior to the casualty, including all improvements constructed
pursuant to Exhibit "D" Any plans and specifications for such restoration and
reconstruction and the contractor retained by Tenant for such restoration and
reconstruction shall be subject to the approval of Landlord. All insurance
proceeds payable pursuant to policies maintained by Tenant pursuant to Section
19.1 shall be applied by Tenant to such reconstruction. Landlord shall not be
liable for any inconvenience or annoyance to Tenant or injury to the business of
Tenant resulting in any way from such damage or the repair thereof, except that,
subject to the provisions of the next sentence, Landlord shall allow Tenant a
fair diminution of rent to the extent the Premises are unfit for occupancy
during the period commencing as of the date of the casualty and continuing for
the period of time, as determined by Landlord, required for Tenant and Landlord
to complete the repairs described in this Article 21. If the Premises or any
other portion of the Building is damaged by fire or other peril resulting from
the fault or negligence of Tenant or any of Tenant's agents, employees, or
invitees, the rent hereunder shall not be diminished during the repair of such
damage and Tenant shall be liable to Landlord for the cost of the repair and
restoration of the Building caused thereby to the extent such cost and expense
are not covered by insurance proceeds. Notwithstanding the foregoing, should
Landlord not elect to terminate this Lease upon damage by fire or other peril,
Tenant shall have the right to terminate this Lease if Landlord has not restored
the Building Shell to substantially the same condition in which it was
immediately prior to the occurrence of the peril within eleven (11) months after
the occurrence of such peril.

                                   ARTICLE 22
                                  CONDEMNATION

          If the whole or substantially the whole of the Building or the
Premises shall be taken for any public or quasi-public use, by right of eminent
domain or otherwise or shall be sold in lieu of condemnation, then this lease
shall terminate as of the date when physical possession of the Building or the
Premises is taken by the condemning authority. If less than the whole or
substantially the whole of the Building or the Premises is thus taken or sold,
Landlord (whether or not the Premises are affected thereby) may terminate this
Lease by giving written notice thereof to Tenant, in which event this Lease
shall terminate as of the date when physical possession of such portion of the
Building or Premises is taken by the condemning authority. If the Lease is not
so terminated upon any such taking or sale, the Base Rent payable hereunder
shall be diminished by an equitable amount, and Landlord shall, to the extent
Landlord deems feasible, restore the Building and the Premises to substantially
their former condition, but such work shall not exceed the scope of the work
done by Landlord in originally constructing the Building and installing Building
Standard Improvements in the Premises, nor shall Landlord in any event be
required to spend for such work an amount in excess of the amount received by
Landlord as compensation for such taking. All amounts awarded upon a taking of
any part or all of the Building or the Premises shall belong to Landlord, and
Tenant shall not be entitled to and expressly waives all claims to any such
compensation.

                                   ARTICLE 23
                          DAMAGES FROM CERTAIN CAUSES

                                      -16-
<PAGE>   21

          Landlord shall not be liable to Tenant for any loss or damage to any
property or person occasioned by theft, fire, act of God, public enemy,
injunction, riot, strike, insurrection, war, court order, requisition, or order
of governmental body or authority or by any other cause beyond the control of
Landlord. In addition, Landlord shall not be liable for any damage or
inconvenience which may arise through repair or alteration of any part of the
Building or Premises.

                                   ARTICLE 24

                                EVENTS OF DEFAULT

          The following events shall be deemed to be events of default ("Events
of Default") by Tenant under this Lease:

                    (a) If Tenant abandons the Premises or if Tenant vacates the
          Premises for thirty (30) consecutive days;

                    (b) If Tenant fails to pay Rent or any other charge required
          to be paid by Tenant, as and when due;

                    (c) If Tenant fails to perform any of Tenant's non-monetary
          obligations under this Lease for a period of ten (10) days after
          written notice from Landlord; provided that if more than ten (10) days
          are required to complete such performance, Tenant shall not be in
          default if Tenant commences such performance within such ten (10) day
          period and thereafter diligently pursues its completion;

                    (d) If (i) Tenant makes a general assignment or general
          arrangement for the benefit of creditors; (ii) a petition for
          adjudication of bankruptcy or for reorganization or rearrangement is
          filed by or against Tenant and is not dismissed within thirty (30)
          days; (iii) a trustee or receiver is appointed to take possession of
          substantially all of Tenant's assets located at the Premises or of
          Tenant's interest in this Lease and possession is not restored to
          Tenant within thirty (30) days; or (iv) substantially all of Tenant's
          assets located at the Premises or of Tenant's interest in this Lease
          is subjected to attachment, execution or other judicial seizure which
          is not discharged within thirty (30) days. If a court of competent
          jurisdiction determines that any of the acts described in this
          subsection (d) is not a default under this Lease, and a trustee is
          appointed to take possession (or if Tenant remains a debtor in
          possession) and such trustee or Tenant transfers Tenant's interest
          hereunder, then Landlord shall receive, as Additional Rent, the
          difference between the rent (or any other consideration) paid in
          connection with such assignment or sublease and the rent payable by
          Tenant hereunder; or

                    (e) If any representation or warranty made by Tenant or by a
          subtenant or assignee in connection with this Lease shall have been
          false or misleading as of the date such representation or warranty was
          made.

                                   ARTICLE 25

                               LANDLORD'S REMEDIES

          Upon the occurrence of any Event of Default by Tenant, Landlord may,
at any time thereafter, with or without notice or demand and without limiting
Landlord in the exercise of any right or remedy which Landlord may have:

          (a) Terminate Tenant's right to possession of the Premises by any
lawful means, in which case this Lease shall terminate and Tenant shall
immediately surrender possession of the Premises to Landlord. In such event,
Landlord shall be entitled to recover from Tenant all damages incurred by
Landlord by reason of Tenant's default, including without limitation (i) the
Worth at the time of the award of the unpaid Base Rent, Additional Rent and
other charges which had been earned at the time of the termination; (ii) the
worth at the time of the award of the amount by which the unpaid Base Rent,
Additional Rent and other charges which would have been earned after termination
until the time of the award exceeds the amount of such rental loss that Tenant
proves could have been reasonably avoided; (iii) the worth at the time of the
award of the amount by which the unpaid Base Rent, Additional Rent and other
charges which would have been paid for the balance of the Lease term after the
time of award exceeds the amount of such rental loss that Tenant proves could
have been reasonably avoided; and (iv) any other amount necessary to compensate
Landlord for all the detriment proximately caused by Tenant's failure to
perform its obligations under the Lease or which in the ordinary course of
things would be likely to result therefrom, including, but not limited to, any
costs or expenses incurred by Landlord in maintaining or preserving the Premises
after such default, the cost of recovering possession of the Premises, expenses
of reletting, including necessary renovation or alteration of the Premises,
Landlord's reasonable attorneys' fees incurred in connection therewith, and any
real estate commission paid or payable. As used in subparts (i) and (ii) above,
the "worth at the time of the

                                      -17-
<PAGE>   22
award" is computed by allowing interest on unpaid amounts at the rate of
eighteen percent (18%) per annum, or such lesser amount as may then be the
maximum lawful rate, accruing the date such payments are due until paid. As used
in subpart (iii) above, the "worth at the time of the award" is computed by
discounting such amount at the discount rate of the Federal Reserve Bank of San
Francisco at the time of the award, plus one percent (1%);

                    (b) Maintain Tenant's right to possession, in which case
          this Lease shall continue in effect whether or not Tenant shall have
          abandoned the Premises. In such event, Landlord shall be entitled to
          enforce all of Landlord's rights and remedies under this Lease,
          including the right to recover Rent as it becomes due hereunder.
          Landlord's election to maintain Tenant's right to possession shall not
          prejudice Landlord's right, at any time thereafter to terminate
          Tenant's right to possession and proceed in accordance with Section
          25(a) above; or

                    (c) Pursue any other remedy now or hereafter available to
          Landlord under Laws or judicial decisions of the State of Nevada.

          Landlord's exercise of any right or remedy shall not prevent it from
exercising any other right or remedy.

                                   ARTICLE 26

                               LANDLORD'S DEFAULT

          Landlord shall be in default hereunder in the event Landlord has not
begun and pursued with reasonable diligence the cure of any failure of Landlord
to meet its obligations hereunder within thirty (30) days of receipt by Landlord
of written notice from Tenant of the alleged failure to perform. In no event
shall Tenant have the right to terminate or rescind this Lease as a result of
Landlord's default as to any covenant or agreement contained in this Lease or as
a result of the breach of any promise or inducement hereof, whether in the Lease
or elsewhere. Tenant hereby waives such remedies of termination and recession
and hereby agrees that Tenant's remedies for default hereunder and for breach of
any promise or inducement shall be limited to a suit for damages and/or
injunction. In addition, Tenant hereby covenants that, prior to the exercise of
any such remedies, it will give any Mortgagee notice and a reasonable time to
cure any default by Landlord.

          Notwithstanding anything to the contrary contained in the Lease, in
addition to any rights Tenant may have under this Lease or by law or in equity,
if Landlord fails to perform or observe any material provisions of this Lease to
be performed by Landlord, which default continues for a period of more than
thirty (30) days after Landlord's receipt of written notice thereof from Tenant
(except that said 30-day period shall be extended by a reasonable period of time
if the alleged default is not reasonably capable of cure within such 30-day
period, and Landlord proceeds diligently to cure the default) then Tenant may,
if Landlord's continued default causes a material interference with Tenant's use
and occupancy of the Premises, incur any reasonable expense necessary to perform
the obligation of Landlord specified in such notice and invoice Landlord for the
reasonable actual cost of such repair, such invoice to be paid by Landlord
within thirty (30) days after receipt thereof along with substantiating
documentation.

                                   ARTICLE 27

                               PEACEFUL ENJOYMENT

          Tenant shall, and may peacefully have, hold, and enjoy the Premises,
subject to the other terms hereof, provided that Tenant pays the Rent and other
sums herein recited to be paid by Tenant and performs all of Tenant's covenants
and agreements herein contained. This covenant and any and all other covenants
of Landlord shall be binding upon Landlord and its successors only with respect
to breaches occurring during its or their respective periods of ownership of
Landlord's interest hereunder. Landlord shall be entitled to cause Tenant to
relocate from the Premises to other space (a "Relocation Space") within the
Building at any time after reasonable written notice of Landlord's election
(not in excess of ninety (90) days) is given to Tenant. Any such relocation
shall be entirely at the expense of Landlord or the third party tenant
replacing Tenant in the Premises. Such a relocation shall not terminate or
otherwise affect or modify this Lease except that from and after the date of
such relocation, "Premises" shall refer to the Relocation Space into which
Tenant has been moved, rather than the original Premises as herein defined.

                                   ARTICLE 28
                                  HOLDING OVER

          In the event of holding over by Tenant after the expiration or other
termination of this Lease or in the event Tenant continues to occupy the
Premises after the termination of Tenant's right of possession

                                      -18-
<PAGE>   23

pursuant to Article 25 above, Tenant shall, throughout the entire holdover
period, pay rent equal to twice the Base Rent and Additional Rent which would
have been applicable had the term of this Lease continued through the period of
such holding over by Tenant. If Tenant remains in possession of all or any part
of the Premises after the expiration of the Lease Term, with the express written
extent of Landlord: (a) such tenancy will be deemed to be a periodic tenancy
from month-to-month only; (b) such tenancy will not constitute a renewal or
extension of this Lease for any further term; and (c) such tenancy may be
terminated by Landlord upon the earlier of thirty (30) days prior written notice
or the earliest date permitted by law. Such month-to-month tenancy will be
subject to every other term, condition, and covenant contained in this Lease
including the Base Rent and Additional Rent provisions. Nothing contained in
this Article 28 shall be construed as consent by Landlord to any holding over of
the Premises by Tenant, and Landlord expressly reserves the right to require
Tenant to surrender possession of the Premises to Landlord upon the expiration
or earlier termination of this Lease. If Tenant fails to surrender the Premises
upon the expiration or earlier termination of this Lease despite demand to do so
by Landlord, Tenant shall indemnify and hold Landlord harmless from all loss or
liability, including, without limitation, any claim made by any succeeding
tenant founded on or resulting from such failure to surrender.

                                   ARTICLE 29

                            SUBORDINATION TO MORTGAGE

          Tenant accepts this Lease subject and subordinate to any mortgage,
deed of trust or other lien presently existing or hereafter arising upon the
Premises, upon the Building as a whole, and to any renewals, refinancing and
extensions thereof, but Tenant agrees that any such Mortgagee shall have the
right at any time to subordinate such mortgage, deed of trust or other lien to
this Lease on such terms and subject to such conditions as such Mortgagee may
deem appropriate in its discretion. Landlord is hereby irrevocably vested with
full power and authority to subordinate this Lease to any mortgage, deed of
trust or other lien now existing or hereafter placed upon the Premises, or the
Building as a whole, and Tenant agrees upon demand to execute such further
instruments subordinating this Lease or attorning to the holder of any such
liens as Landlord may request. In the event that any mortgage or deed of trust
is foreclosed or conveyance in lieu of foreclosure is made for any reason,
Tenant shall, if requested by the Mortgagee, attorn to and become the Tenant of
the successor-in-interest to Landlord and in such event Tenant hereby waives its
right under any current or future law which gives or purports to give Tenant any
right to terminate or otherwise adversely affect this Lease and the obligations
of Tenant hereunder. If in connection with obtaining construction, interim or
permanent financing for the Building, the lender shall request modifications to
this Lease as a condition to such financing, Tenant will not withhold or delay
its consent thereto, provided that such modifications do not increase the
obligations of Tenant hereunder and do not otherwise materially adversely affect
Tenant's rights hereunder. In the event that Tenant should fail to execute any
instrument described in this Article 29 promptly as requested, Tenant hereby
irrevocably constitutes Landlord as its attorney-in-fact to execute such
instrument in Tenant's name, place and stead, it being agreed that such power is
one coupled with an interest. Tenant agrees that it will from time to time
within ten (10) business days following a request by Landlord execute and
deliver to such persons as Landlord shall request a statement in recordable form
certifying that this Lease is unmodified and in full force and effect (or if
there have been modifications, that the same is in full force and effect as so
modified), stating the dates to which rent and other charges payable under the
Lease have been paid, stating that Landlord is not in default hereunder (or if
Tenant alleges a default stating the nature of such alleged default) and further
stating such other matters as Landlord shall reasonably require. Tenant
acknowledges that any such statement may be relied upon by any Mortgagee,
prospective Mortgagee, purchaser or prospective purchaser of the Building or any
interest therein.

          Upon Tenant's written request, Landlord shall use reasonable efforts,
excluding the payment of money, to obtain a non-disturbance agreement from
Landlord's Mortgagee with respect to this Lease. Landlord agrees to submit to
such Mortgagee on Tenant's behalf a non-disturbance agreement prepared by
Tenant, however, Landlord makes no representation that its Mortgagee will
execute any such agreement.

                                   ARTICLE 30
                                LANDLORD'S LIEN

          Tenant hereby grants to Landlord a lien and security interest on all
property of Tenant now or hereafter placed in or upon the Premises, and such
property shall be and remain subject to such lien and security interest of
Landlord for payment of all rent and other sums agreed to be paid by Tenant
herein. The provisions of this paragraph relating to such lien and security
interest shall constitute a security agreement under and subject to the Nevada
Uniform Commercial Code so that Landlord shall have and may enforce a security
interest on all property of Tenant now or hereafter placed in or on the
Premises, in addition to and cumulative of the Landlord's liens and rights
provided by law or by the other terms and provisions of this Lease. Tenant
agrees to execute as debtor such financing statement or statements as Landlord
now or hereafter may request. Landlord may at its election at any time file a
copy of this Lease as a financing

                                      -19-
<PAGE>   24

statement. Notwithstanding the above, Landlord shall neither sell nor withhold
from Tenant, Tenant's business records.

                                      -20-
<PAGE>   25

                                   ARTICLE 31
                                 ATTORNEY'S FEES

          In the event Tenant defaults in the performance of any of the terms of
this Lease and Landlord employs an attorney in connection therewith, Tenant
agrees to pay Landlord's reasonable attorney's fees.

                                   ARTICLE 32
                                NO IMPLIED WAIVER

          The failure of Landlord to insist at any time upon the strict
performance of any covenant or agreement herein, or to exercise any option,
right, power or remedy contained in this Lease, shall not be construed as a
waiver or a relinquishment thereof for the future. No payment by Tenant or
receipt by Landlord of a lesser amount than the monthly installment of Rent due
under this Lease shall be deemed to be other than on account of the earliest
Rent due hereunder, nor shall any endorsement or statement on any check or any
letter accompanying any check or payment as 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 pursue any other remedy
in this Lease provided.

                                   ARTICLE 33
                               PERSONAL LIABILITY

          The liability of Landlord to Tenant for any default by Landlord under
the terms of this Lease shall be limited to the lesser of (i) the interest of
Landlord in the Building, or (ii) the interest Landlord would have in said
Building if the same were encumbered by third party debt in an amount equal to
eighty percent (80%) of the value of said Building (as such value is determined
by Landlord) and Tenant agrees to look solely to such amount for recovery of any
judgment from Landlord, it being intended that Landlord shall not be personally
liable for any judgment or deficiency.

                                   ARTICLE 34
                                SECURITY DEPOSIT

          The Security Deposit shall be held by Landlord without liability for
interest and as security for the performance by Tenant of Tenant's covenants and
obligations under this Lease, it being expressly understood that the Security
Deposit shall not be considered an advance payment of rental or a measure of
damages caused by Tenant in case of default by Tenant. Landlord may commingle
the Security Deposit with Landlord's other funds. Landlord may, from time to
time, without prejudice to any other remedy, use the Security Deposit to the
extent necessary to make good any arrearage of rent or to satisfy any other
covenant or obligation of Tenant hereunder. Following any such application of
the Security Deposit, Tenant shall pay to Landlord on demand the amount so
applied in order to restore the Security Deposit to its original amount. If
Tenant is not in default at the termination of this Lease, the balance of the
Security Deposit remaining after any such application shall be returned by
Landlord to Tenant. If Landlord transfers its interest in the Premises during
the term of this Lease, Landlord may assign the Security Deposit to the
transferee and thereafter shall have no further liability for the return of such
Security Deposit to Tenant.

                                   ARTICLE 35
                                     NOTICE

          Any notice in this Lease provided for must, unless otherwise expressly
provided herein, be in writing, and may, unless otherwise in this Lease
expressly provided, be given or be served by depositing the same in the United
States mail, postage paid and certified and addressed to the party to be
notified, with return receipt requested, or by delivering the same in person to
an officer of such party, or by prepaid telegram, when appropriate, addressed to
the party to be notified at the address stated in this Lease or such other
address, notice of which has been given to the other party. Notice deposited in
the mail in the manner hereinabove described shall be effective from and after
the expiration of three (3) calendar days after it is so deposited.

                                   ARTICLE 36
                                  SEVERABILITY

          If any term or provision to this Lease, or the application thereof to
any person or circumstance shall, to any extent, be invalid or unenforceable,
the remainder of this Lease, or the application of such term or provision to
persons or circumstances other than those as to which it is held invalid or
unenforceable, shall not be affected thereby, and each term and provision of
this Lease shall be valid and enforced to the fullest extent permitted by law
notwithstanding the invalidity of any other term or provision hereof.

                                      -21-
<PAGE>   26

                                   ARTICLE 37
                                   RECORDATION

          Tenant agrees not to record this Lease or any memorandum hereof.

                                   ARTICLE 38
                                  GOVERNING LAW

          This Lease and the rights and obligations of the parties hereto shall
be interpreted, construed, and enforced in accordance with the laws of the State
of Nevada.

                                   ARTICLE 39
                                  FORCE MAJEURE

          Whenever a period of time is herein prescribed for the taking of any
action by Landlord, Landlord shall not be liable or responsible for, and there
shall be excluded from the computation of such period of time, any delays due to
strikes, riots, acts of God, shortages of labor or materials, war, governmental
laws, regulations or restrictions, or any other cause whatsoever beyond the
control of Landlord.

                                   ARTICLE 40
                               TIME OF PERFORMANCE

          Except as expressly otherwise herein provided, with respect to all
required acts of Tenant, time is of the essence of this Lease.

                                   ARTICLE 41
                              TRANSFERS BY LANDLORD

          Landlord shall have the right to transfer and assign, in whole or in
part, all its rights and obligations hereunder and in the Building and property
referred to herein, and in such event and upon such transfer Landlord shall be
released from any further obligations hereunder, and Tenant agrees to look
solely to such successor in interest of Landlord for the performance of such
obligations.

                                   ARTICLE 42
                                   COMMISSIONS

          Except for a commission to be paid by Landlord to Lee & Associates
("Broker") in accordance with a separate commission agreement to be entered into
by Landlord and Broker, Landlord and Tenant hereby indemnify and hold each other
harmless against any loss, claim, expense or liability with respect to any
commissions or brokerage fees claimed on account of the execution and/or renewal
of this Lease due to any action of the indemnifying party.

                                   ARTICLE 43
                        EFFECT OF DELIVERY OF THIS LEASE

          Landlord has delivered a copy of this Lease to Tenant for Tenant's
review only, and the delivery hereof does not constitute an offer to Tenant or
option. This Lease shall not be effective until a copy executed by both Landlord
and Tenant is delivered to and accepted by Landlord.

                                   ARTICLE 44
                   CORPORATE AUTHORITY; PARTNERSHIP AUTHORITY

          If Tenant is a corporation, each person signing this Lease on behalf
of Tenant represents and warrants that he or she has full authority to do so
and that this Lease binds the corporation. Within thirty (30) days after this
Lease is signed, Tenant shall deliver to Landlord a certified copy of a
resolution of Tenant's Board of Directors authorizing the execution of this
Lease or other evidence of such authority reasonably acceptable to Landlord. If
Tenant is a partnership, each person signing this Lease for Tenant represents
and warrants that he or she is a general partner of the partnership, that he or
she has full authority to sign for the partnership and that this Lease binds
the partnership and all general partners of the partnership. Tenant shall give
written notice to Landlord of any general partner's withdrawal or addition.
Within thirty (30) days after this Lease is signed, Tenant shall deliver to
Landlord a copy of Tenant's recorded statement of partnership or certificate of
limited partnership.

                                      -22-
<PAGE>   27

                                   ARTICLE 45
                           JOINT AND SEVERAL LIABILITY

          All parties signing this Lease as Tenant shall be jointly and
severally liable for all obligations of Tenant.

                                   ARTICLE 46
                                 INTERPRETATION

          The captions of the Articles of this Lease, and each specific Section
within the respective Articles, are to assist the parties in reading this Lease
and are not a part of the terms or provisions of this Lease. Whenever required
by the context of this Lease, the singular shall include the plural and the
plural shall include the singular. The masculine, feminine and neuter genders
shall each include the other. In any provision relating to the conduct, acts or
omissions of Tenant, the term "Tenant" shall include Tenant's agents, employees,
contractors, invitees, successors or others using the Premises with Tenant's
expressed or implied permission.

                                   ARTICLE 47
                INCORPORATION OF PRIOR AGREEMENTS; MODIFICATIONS

          This Lease is the only agreement between the parties pertaining to the
lease of the Premises and no other agreements are effective. All amendments to
this Lease shall be in writing and signed by all parties. Any other attempted
amendment shall be void.

                                   ARTICLE 48
                              WAIVER OF JURY TRIAL

          Landlord and Tenant by this Article 48 waive trial by jury in any
action, proceeding, or counterclaim brought by either of the parties to
this Lease against the other on any matters whatsoever arising out of or in any
way connected with this Lease, the relationship of Landlord and Tenant, Tenant's
use or occupancy of the Premises, or any other claims (except claims for
personal injury or property damage), and any emergency statutory or any other
statutory remedy.

                                   ARTICLE 49
                                    NO MERGER

          The voluntary or other surrender of this Lease by Tenant or the
cancellation of this Lease by mutual agreement of Tenant and Landlord or the
termination of this Lease on account of Tenant's default will not work a merger,
and will, at Landlord's option, (a) terminate all or any subleases and
subtenancies or (b) operate as an assignment to Landlord of all or any subleases
or subtenancies. Landlord's option under this Article 49 will be exercised by
written notice to Tenant and all known sublessees or subtenants in the Premises
or any part of the Premises.

                                   ARTICLE 50
                                  COUNTERPARTS

          This Lease may be executed in counterparts, and, when all counterpart
documents are executed, the counterparts shall constitute a single binding
instrument.

                                   ARTICLE 51
                                    EXHIBITS

          All Exhibits as listed on the "List of Exhibits" and as attached
hereto are incorporated herein and made a part of this Lease for all purposes.

                                      -23-
<PAGE>   28
\
          IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease
(which may be in multiple original counterparts) as of the day and year first
above written.

Address:                                       LANDLORD:

3800 Howard Hughes Parkway                     3930 BUILDING PARTNERSHIP,
Las Vegas, Nevada 89109                        a Nevada general partnership
Attention: Property Management

                                               By its general partner:
                                               HOWARD HUGHES PROPERTIES,
                                               LIMITED PARTNERSHIP, a
                                               Delaware limited partnership

                                               By its sole general partner:
                                               THE HOWARD HUGHES CORPORATION,
                                               a Delaware corporation

                                               By: ____________________________

                                               Print Name: ____________________

                                               Print Title: ___________________

Address:                                       TENANT:

1560 West Fountainhead Parkway                 Integrated Information Systems,
Suite 200                                      an Arizona corporation
Tempe, AZ 85282
Attention: Steven Dodenhoff                    By: /s/ Jeffrey Frankel

                                               Print Name: Jeffrey Frankel

                                               Print Title: V.P. & Corp. Counsel

                                      -24-

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