<PAGE>

                                                                   EXHIBIT 10.25

                               PRESTONWOOD TOWER


                                 OFFICE LEASE

     THIS LEASE (herein so called) is made as of the 20th day of March, 1997, by
and between Prestonwood Tower, Inc., a Texas corporation ("Landlord"), and the
Tenant named below.                                        --------

                                  WITNESSETH:

     1.   Basic Provisions.

          (a) Tenant:           TurboChef , Inc.
                                ------------------------
                                        Dallas, Texas 75240
                                        ------------------------

          (b) Premises:                 Suite  955, Prestonwood Tower,
                                        Dallas, Texas 75240.

                                        Approximate Rentable Area:
                                        3,036  square feet (RA).
                                        ----------------------------------------

                                        Approximate Usable Area:
                                        2,710  square feet (UA).
                                        ----------------------------------------

          (c) Basic Rental:             $4,976.80 per month, including 1 garage
                                        parking space; annual rental rate per
                                        square foot (RA): $19.67.
                                        ----------------------------------------

          (d) Security Deposit:         $16,212.00
                                        ----------------------------------------

          (e) Lease Term:               Three (3) years.
                                        ----------------------------------------

          (f) Estimated
              Commencement Date:        April 15, 1997.
                                        ---------------

          (g) Operating Expense Stop:   $ 6.75
                                        ------

          (h) Permitted Use:            Office
                                        --------------------------------------

          (i) Parking:                  Tenant shall be allowed one parking
                                        space in the garage and ten in the open
                                        parking lot.
                                        ---------------------------------------

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     2.   Lease Grant.  Landlord hereby leases to Tenant and Tenant hereby
leases from Landlord the Premises described above, which are shown in Exhibit
                                                                      -------
A-1 attached hereto.  The Premises are located in the building described above
---
(the "Building"), located on the real property described in Exhibit A-2 attached
      --------                                              -----------
hereto (the "Land").  The Land, the Building, the parking facilities, parking
             ----
garage and other structures and improvements, landscaping, fixtures,
appurtenances and other common areas now or hereafter placed, constructed or
erected thereon comprise the project (the "Project") known as Prestonwood Tower
                                           -------
in Dallas, Dallas County, Texas.  This Lease is granted subject to the terms
hereof, the rights and interests of third parties under existing liens,
easements and encumbrances affecting such property, all zoning regulations,
rules, ordinances, building restrictions and other laws and regulations now in
effect or hereafter adopted by any governmental authority having jurisdiction
over the Project or any part thereof.

     3.   Lease Term.  This Lease shall be for the term of years described
above, commencing on the later of (a) the Estimated Commencement Date set forth
in Paragraph 1 or (b) ten (10) days after Landlord's substantial completion of
   -----------
the Finish Work (as hereinafter defined) in the Premises, but if Tenant takes
possession of the Premises for the conduct of business before either such date,
then the Lease Term shall commence on the date Tenant in fact occupies the
Premises.  The date the Lease Term commences shall be referred to in this Lease
as the "Commencement Date."  If the Lease Term expires on a date other than the
        -----------------
last day of a calendar month, Landlord and Tenant shall be deemed to have agreed
that the Lease Term shall be extended through the last day of the calendar month
in which the termination date falls.

     4.   Construction of Finish Work in Premises.  Landlord agrees to construct
leasehold improvements (the "Finish Work") in a good and workmanlike manner in
                             -----------
and upon the Premises at its sole cost and expense so long as the cost of the
Finish Work does not exceed $3.00 per rentable square foot of the Premises (the
                            -----
"Finish Allowance") in accordance with construction drawings approved by both
 ----------------
Landlord and Tenant.  Costs to be incurred by Landlord in excess of the Finish
Allowance shall be paid by Tenant to Landlord promptly upon demand prior to
Landlord's commencing construction.  Change orders requested by Tenant and
approved by Landlord after construction has commenced and which increase the
cost of construction shall be paid by Tenant to Landlord promptly upon demand.
All installations and improvements now or hereafter placed in the Premises other
than Building Standard (as hereinafter defined) improvements shall be for
Tenant's account and at Tenant's cost (and Tenant shall pay ad valorem taxes and
increased insurance thereon or attributable thereto), which cost shall be
payable by Tenant to Landlord upon demand as additional rent.  "Building
                                                                --------
Standard" shall mean the type, brand and/or quality of materials Landlord
--------
designates from time to time to be the minimum quality to be used in the
Building  or the exclusive type, grade or quality of material to be used in the
Building.  If Landlord is delayed in completing such construction within the
specified time, the delay in commencement of Tenant's obligation to pay rent
hereunder shall constitute full settlement of all claims that Tenant may have
against Landlord based on the delay.  If Landlord is unable to complete the
Finish Work within the specified time due to a delay caused by Tenant or for any
other cause related to Tenant's acts or omissions, Tenant's rental obligations
under this Lease shall begin on the date on which Landlord would have delivered
possession of the Premises to Tenant absent such delay, and such date shall be
the Commencement Date.

     5.   Tenant's Basic Rental Obligation.

          (a) Basic Rental.  Beginning on the Commencement Date, Tenant shall
              ------------
     pay to Landlord the Basic Rental without demand, deduction or setoff, for
     each month of the entire Lease Term.  If the day on which Basic Rental is
     first due is other than the first day of a calendar month, rent for such
     partial month shall be prorated on a daily basis.  All Basic Rental shall
     be paid by Tenant to Landlord in advance on or before the first day of each
     calendar month during the Lease Term.  All rental and other payments which
     are due hereunder shall be made payable to Landlord.  Tenant agrees to pay
     said rental and other payments to Landlord at c/o

                                       2
<PAGE>

     Prestonwood Tower, Inc., 5151 Beltline Road, Suite 650, Dallas, Texas
     75240, or at such other place as may from time to time be designated in
     writing by Landlord, in lawful money of the United States of America
     without any prior demand therefor and without any deduction or setoff
     whatsoever.

          (b) Security Deposit.  Tenant shall deposit with Landlord the amount
              ----------------
     shown above as a Security Deposit contemporaneously with the execution
     hereof.  Tenant's Security Deposit shall be held in accordance with the
     terms of Paragraph 18(k) with the exception that after the eighteenth
              ---------------
     month of the Lease, Tenant shall provide to Landlord the most current and
     accurate financials available.  In the event that Tenant has paid all
     rentals in a timely manner per the Lease and if the financials indicate a
     cash balance of at least $2,000,000, then Landlord will refund to Tenant
     $8,106.00.  The remaining balance will be refunded at the end of the term
     of the lease per the terms of Paragraph 18(k).
                                   ---------------

     6.   Tenant's Additional Rental Obligation.

          (a) Additional Rental.  Beginning on the Commencement Date, Tenant
              -----------------
     shall pay to Landlord each calendar year additional rental (the "Additional
                                                                      ----------
     Rental") equal to Tenant's proportionate share of the Actual Operating
     ------
     Expenses (defined below) for the Building for such calendar year in excess
     of the Operating Expense Stop multiplied by the number of square feet of
     Rentable Area in the Premises.  Additional Rental shall be prorated on a
     daily basis for each partial calendar year in the Lease Term.  Tenant's
     proportionate share shall be based on the ratio which the Rentable Area in
     the Premises (adjusted for office expansions) bears to the Rentable Area
     within the Building.

          (b) Adjustment of Actual Operating Expenses.  Notwithstanding any
              ---------------------------------------
     language herein to the contrary, if the Building is not fully occupied
     during any calendar year of the Lease Term, Actual Operating Expenses shall
     be determined as if the Building had been fully occupied during such year.
     For the purposes of this Lease, "fully occupied" shall mean occupancy of
                                      --------------
     one hundred percent (100%) of the  Rentable Area in the Building.

          (c) Actual Operating Expenses Enumerated.  Actual operating expenses
              ------------------------------------
     (the "Actual Operating Expenses") shall include all expenses, costs and
           -------------------------
     disbursements of every kind and nature incurred or paid by Landlord in
     connection with the ownership and/or the operation, maintenance, repair and
     security of the Project, including (without limitation) such expenses as
     utility costs, wages, landscaping, maintenance and repair costs, costs of
     independent contractors, fees (other than legal fees directly related to
     leasing activities of Landlord), insurance premiums and real estate taxes
     and other governmental assessments.  Actual Operating Expenses shall
     exclude the capitalized cost of permanent improvements (other than those
     installed to reduce operating costs or as may be required by law);
     interest, amortization or other payments on loans to Landlord (other than
     that incurred to finance items which are included in Actual Operating
     Expenses); all costs reimbursed to Landlord out of insurance proceeds or
     from tenants or other sources not affiliated with Landlord; and
     depreciation of the Building.

          (d) Estimated Actual Operating Expenses.  Landlord shall have the
              -----------------------------------
     right to estimate Additional Rental to accrue hereunder and Tenant shall
     pay to Landlord the amount of such estimate monthly with Tenant's Basic
     Rental payments.  If Landlord estimates Additional Rental in advance, then
     by each April 1 or as soon thereafter as practical, Landlord shall furnish
     to Tenant a statement of Landlord's Actual Operating Expenses for the
     previous calendar year.  If for any calendar year Tenant's Additional
     Rental collected for the prior year, as a result of payment of Tenant's
     estimated Additional Rental, is in excess of Tenant's Additional Rental
     actually due during such prior year, then, so long as Tenant is not in
     default hereunder, Landlord shall refund to Tenant any overpayment (or, at
     Landlord's option, apply such amount

                                       3
<PAGE>

     against rentals due or to become due hereunder). Likewise, Tenant shall pay
     to Landlord, on demand, any underpayment with respect to the prior year.

     7.   Landlord's Obligations.

          (a) Water, Heat, Air Conditioning, Janitorial and Elevator Service and
              ------------------------------------------------------------------
     Maintenance Obligations.  Subject to the limitations hereinafter set forth,
     -----------------------
     Landlord agrees to furnish Tenant while occupying the Premises and while
     Tenant is not in default under this Lease: (i) water (hot and cold) at
     those points of supply provided for general use of tenants of the Building;
     (ii) Building Standard heat and air conditioning in season, as determined
     by Landlord, weekdays (other than holidays) between 7:00 a.m. and 7:00
     p.m., and Saturdays between 7:00 a.m. and 1:00 p.m., at such temperatures
     and in such amounts as are reasonably considered by Landlord to be standard
     (Landlord shall only furnish heat and air conditioning weekdays after 7:00
     p.m., on Saturdays after 1:00 p.m., and on Sundays and holidays at the
     written request of Tenant, and at Tenant's cost payable within fifteen (15)
     days after receipt of an invoice); (iii)  Building Standard janitorial
     service on weekdays other than holidays for Building installations and
     Building Standard window washing; (iv) operatorless passenger elevators for
     ingress and egress to the floor on which the Premises are located; and (v)
     replacement of Building Standard light bulbs and fluorescent tubes, but
     Landlord's standard charge for such bulbs and tubes shall be paid by
     Tenant.  Landlord additionally agrees to maintain in the Building the
     exterior walls, roof, windows, structural steel, load-bearing nondemising
     walls, floors below the level of Tenant's floor covering and the HVAC,
     electrical and plumbing systems serving the Premises, but located outside
     the Premises, subject to the terms and conditions of this Lease which may
     limit Landlord's maintenance, repair and rebuilding obligations under
     various circumstances.

          (b) Electrical Service.  Landlord shall provide electrical current for
              ------------------
     Tenant's use of typewriters, voice writers, calculating machines and other
     machines of similar low electrical consumption, special lighting in excess
     of Building Standard or any other item of electrical equipment which
     consumes more than machines of low electrical consumption or requires
     voltage of more than 120 volts, provided, however, that all costs for
     extraordinary or unusual demand for electrical service shall be borne by
     Tenant.

          (c) Interruption of Services.  Failure to any extent to make
              ------------------------
     available, or any slow-down, stoppage or interruption of any services
     described in this paragraph, resulting from any cause whatsoever (other
     than Landlord's gross negligence) shall not render Landlord liable in any
     respect for damages, nor be construed as an eviction of Tenant, nor relieve
     Tenant from fulfillment of any covenant or agreement hereof.  Should any
     service being furnished by Landlord be interrupted for any cause
     whatsoever, Tenant shall notify Landlord and Landlord shall use reasonable
     diligence to restore such service promptly.  Tenant shall be entitled to an
     equitable diminution of rent based upon the percentage area of the Premises
     which is rendered unfit for occupancy for the Permitted Use, if such
     interruption or termination of service continues for more than ten (10)
     consecutive business days.  Tenant's right to an equitable diminution of
     rent shall be Tenant's sole and exclusive remedy in the event of an
     occurrence specified herein.

          (d) Discontinuance of Service.  Landlord reserves the right, upon not
              -------------------------
     less than thirty (30) days written notice to Tenant, to discontinue the
     availability of electrical service to the Premises.  If Landlord elects
     such option, Tenant will contract directly with such public utility for the
     continuance of service to the Premises.

     8.   Tenant's Covenants.  Tenant covenants and agrees as follows:

          (a) Alterations.  Tenant shall make no alterations, changes or
              -----------
     improvements to the Premises without first submitting to Landlord plans and
     specifications and  obtaining the prior

                                       4
<PAGE>

     written consent of Landlord. All work done by Tenant shall be performed in
     a good and workmanlike manner, in compliance with applicable laws and at
     such times and in such manner as not to cause interference with
     construction in progress or with other tenants in the Building.

          (b) Mechanic's and Materialmen's Liens.  Tenant shall have no
              ----------------------------------
     authority or power, express or implied, to create or cause any mechanic's
     or materialmen's lien, charge or encumbrance of any kind against the
     Premises or the Project or any portion thereof.  Tenant shall promptly
     cause any such liens which have arisen by reason of any work claimed to
     have been undertaken by or through Tenant to be released by payment,
     bonding or otherwise within thirty (30) days after request by Landlord, and
     shall indemnify Landlord against losses arising out of any such claim.

          (c) Permitted Use of Premises.  Tenant shall not permit the Premises
              -------------------------
     to be used for any purpose other than for the use specified in Paragraph 1
                                                                    -----------
     of this Lease.  Tenant shall at all times comply with applicable laws,
     ordinances, rules and regulations in Tenant's occupancy of the Premises,
     whether now existing or hereafter enacted.

          (d) Repairs.  Tenant will not in any manner deface or injure the
              -------
     Building, and will pay the cost of repairing and replacing any damage or
     injury done to the Building or any part thereof by Tenant or Tenant's
     agents, contractors or employees.  Tenant shall throughout the Lease Term
     keep the Premises free from deterioration, waste and nuisance of any kind,
     excluding ordinary and customary wear and tear and damage resulting from a
     fire or unavoidable casualty not caused by the act or omission Tenant or
     Tenant's agents, contractors or employees.  Tenant agrees to keep the
     Premises in good condition and repair and Tenant shall make all necessary
     repairs and replacements.  If Tenant fails to make such repairs within
     fifteen (15) days after notice from Landlord, Landlord may at its option
     make such repair, and Tenant shall upon demand pay Landlord for the cost
     thereof.

          (e) Purchase of Parking Rights.  Tenant shall be required to purchase
              --------------------------
     parking rights for the covered spaces located in the Building garage and
     the surface spaces located in the parking area adjacent to the parking
     garage specified in excess of those specified Paragraph 1 at the rates
                                                   -----------
     established from time to time by Landlord or Landlord's garage operator.

     9.   Assignment and Subletting.

          (a) Assignment and Subletting.  Tenant shall not sublet the Premises
              -------------------------
     in whole or in part or market the Premises for sublease and shall not sell,
     assign or in any manner transfer this Lease or any interest herein,
     directly or indirectly (by transfer of control of Tenant, for example), or
     voluntarily or by operation of law or otherwise, or permit any transfer of
     Tenant's interest created hereby, or allow any lien upon Tenant's interest
     by operation of law or otherwise, or permit the use or occupancy of the
     Premises or any part thereof, by anyone other than Tenant, nor shall Tenant
     sublease space in the  Building from another tenant thereof, without
     Landlord's prior written consent.  If this Lease or any interest in this
     Lease is sold, assigned or transferred, or Tenant subleases any part of the
     Premises, without Landlord's consent, cumulative of any other right or
     remedy available to Landlord, Landlord may elect to terminate this Lease
     (as it affects the portion of the Premises sought to be sublet or assigned)
     as of the effective date of the proposed transfer.  Landlord's acceptance
     of any name for listing on the Building directory will not be deemed, nor
     will it substitute for, Landlord's consent, as required by this Lease, to
     any sublease, assignment or other occupancy of the Premises.

          (b) Consent to Assignment.  Consent by Landlord to one or more
              ---------------------
     assignments or sublettings shall not operate as a waiver of Landlord's
     rights as to any subsequent assignments and sublettings.  Notwithstanding
     any assignment or subletting, Tenant and any guarantor of Tenant's
     obligations under this Lease shall at all times remain fully responsible
     and liable for the

                                       5
<PAGE>

     payment of the rent and other sums herein specified and for compliance with
     all of Tenant's other obligations under this Lease, and Landlord may
     proceed against Tenant (or any guarantor) for the enforcement of such
     obligations without first proceeding against any other party. No direct
     collection by Landlord from any such assignee or sublessee shall be
     construed to constitute a novation or a release of Tenant or any guarantor
     of Tenant from the further performance of its obligations hereunder.

          (c) Excess Rents.  If any rents or other sums received by Tenant under
              ------------
     any sublease are in excess of the rent and other sums payable by Tenant
     under this Lease (prorated for a sublease of less than 100 percent of the
     Premises), or if any additional consideration is paid to Tenant by any
     assignee under any assignment, then such excess rents under any sublease or
     such additional consideration under an assignment shall be paid by Tenant
     to Landlord as additional rent hereunder within ten (10) days after Tenant
     receives the same.

     10.  Indemnity and Insurance.

          (a) Indemnity.  Tenant hereby agrees to protect, defend (with counsel
              ---------
     acceptable to Landlord), indemnify and hold harmless Landlord and its
     agents, officers, employees, trustees, advisory board members or
     subsidiaries (hereinafter "Indemnities") from any and all claims, demands,
                                -----------
     losses, fines, assessments, penalties, forfeitures, losses of use, damages
     to persons (including damages for sickness, disease, personal injury,
     bodily injury and death), damages to property, causes of action and costs
     (including, without limitation, costs of attorneys' fees, investigation,
     defense, settlement and court) (i) caused by the negligence or misconduct
     of any person, including, but not limited to, (A) Indemnities, or any of
     them, (B) Tenant or its employees, agents, subtenants, guests, invitees,
     licensees or concessionaires or (C) any other person entering the Premises
     under the express or implied invitation of Tenant; (ii) arising out of the
     use of the Premises by Tenant and the conduct of its business therein;
     and/or (iii) arising out of any breach or default by Tenant in the
     performance of its obligations hereunder, including, but not limited to,
     Tenant's obligation to obtain the insurance coverages required herein.
     Indemnities, or any of them, shall have the right to participate in the
     defense supplied by Tenant, with their own legal counsel and at their own
     expense, without releasing Tenant from any of its defense and indemnity
     obligations contained herein.  Tenant's obligations hereunder shall survive
     the termination of this Lease.

          (b) Liability and Worker's Compensation Insurance.
              ---------------------------------------------

               (i) Tenant at all times during the Lease Term shall, at its own
          expense, keep in full force and effect commercial general liability
          insurance against bodily injury, including death resulting therefrom,
          and property damage to the combined single limit of $1,000,000 to one
          or more than one person as the result of any one accident or
          occurrence.  Landlord shall be named an additional insured on said
          policy.  Additionally, Tenant at all times during the Lease Term
          shall, at its own expense, keep in full force and effect worker's
          compensation insurance, with Coverage A to the statutory limit and
          Coverage B to the limit of $500,000 per occurrence.  Tenant hereby
          waives its right of recovery of any amounts paid by Tenant or on
          Tenant's behalf to satisfy applicable worker's compensation laws.  The
          policies or duly executed certificates for the same, together with
          satisfactory evidence of the payment of the premiums therefor, shall
          be deposited with Landlord on the date Tenant first occupies the
          Premises and upon renewals of such policies not less than thirty (30)
          days prior to the expiration of the term of such coverage.

               (ii) Any failure of Tenant to obtain and maintain the insurance
          coverages required herein shall constitute a breach hereof and Tenant
          shall be solely responsible for any loss suffered as a result of such
          deficiency in coverage.  It is expressly understood

                                       6
<PAGE>

          and agreed that the coverages required represent Landlord's minimum
          requirements and such are not to be construed to void or limit
          Tenant's indemnity obligations contained in this Lease. Neither shall
          (A) the insolvency, bankruptcy or failure of any insurance company
          carrying insurance of Tenant, (B) the failure of any insurance company
          to pay claims occurring nor (C) any exclusion from or insufficiency of
          coverage be held to affect, negate or waive any of the provisions of
          this Lease. With respect to insurance coverages, except worker's
          compensation, maintained hereunder by Tenant and insurance coverage
          separately obtained by Landlord, all insurance coverages afforded by
          policies of insurance maintained by Tenant shall be primary insurance
          as such coverages apply to Landlord, and such insurance coverages
          separately maintained by Landlord shall be excess. The amount of
          liability insurance under insurance policies maintained by Tenant
          shall not be reduced by the existence of insurance coverage under
          policies separately maintained by Landlord. Neither Tenant nor its
          insurers shall be entitled to receive any contribution from any
          insurance policies separately maintained by Landlord. Tenant shall be
          solely responsible for any premiums, deductible assumptions,
          retentions, self-insurance premiums, audits, retrospective adjustments
          or any other kind of payment due under its policies.

               (iii)  Tenant's occupancy of the Premises without delivering the
          certificates of insurance shall not constitute a waiver of Tenant's
          obligations to provide the required coverages.  If Tenant provides to
          Landlord a certificate that does not evidence the coverages required
          herein, or that is faulty in any respect, such shall not constitute a
          waiver of Tenant's obligations to provide the proper insurance.

          (c) Increase in Landlord's Insurance Costs.  Tenant agrees to pay to
              --------------------------------------
     Landlord any increase in premiums for Landlord's insurance policies
     resulting from Tenant's use or occupancy of the Premises.

          (d) Waiver of Liability.  Landlord shall not be liable to Tenant or to
              -------------------
     Tenant's employees, agents, subtenants, guests, invitees, licensees,
     concessionaires, or to any other person whomsoever, for any injury to
     persons or damage to property on or about the Premises or any other part of
     the Building (i) caused by the negligence or misconduct of any person,
     including, but not limited to, (A) Landlord or its agents, officers,
     employees, trustees, advisory board members, directors, partners,
     shareholders, venturers, predecessors, affiliates or subsidiaries, (B)
     Tenant or its employees, agents, subtenants, guests, invitees, licensees or
     concessionaires or (C) any other person entering the Premises or the
     Building under the express or implied invitation of Tenant; (ii) arising
     out of the use of the Premises by Tenant and the conduct of its business
     therein; and/or (iii) arising out of any breach or default by Tenant in the
     performance of its obligations hereunder, including, but not limited to,
     Tenant's obligations to obtain the insurance coverages required herein.

     11.  Fire or Casualty.  In the event that  (a) the Premises or the Building
should be so damaged by fire or other casualty that rebuilding or repairs cannot
be completed within one (1) year after the date of commencement of
reconstruction, as determined by Landlord, or (b) the Premises shall be so
damaged during the last two (2) years of the Lease Term to the extent that more
than fifty percent (50%) of the area thereof is rendered untenantable, or (c)
the holder of a mortgage, deed of trust or other lien covering the Premises at
the time of the casualty elects, pursuant to such mortgage, deed of trust or
other lien, to require use of all or a part of Landlord's insurance proceeds in
satisfaction of all or part of the indebtedness secured by the mortgage, deed of
trust or other lien, Landlord may at its option terminate this Lease within
ninety (90) days after such damage by giving written notice to Tenant, in which
event rent shall be abated effective with the date of such damage.  If,
following any such casualty, Landlord does not terminate this Lease, or in the
event of casualty damage of a lesser extent to the Building, Landlord shall,
following receipt of insurance proceeds, solely to the extent of such proceeds
(after deducting therefrom the reasonable costs and expenses paid or incurred by
Landlord in connection

                                       7
<PAGE>

with the recovery of such insurance proceeds), rebuild or repair the Premises or
the Building to substantially the same condition in which they were immediately
prior to the happening of the fire or other casualty, except that Landlord shall
not be required to rebuild, repair or replace any part of the furniture,
equipment, fixtures and other personal property which may have been placed by
Tenant or other tenants within the Building or the Premises. Landlord shall
allow Tenant a fair diminution of rental during the time the Premises are unfit
for occupancy, and at Landlord's option, the Lease Term shall be extended for a
period equal to the period that the Premises are unfit for occupancy.

     12.  Condemnation.  In the event that the Premises or the Building or any
part thereof shall be taken for public use or condemned under eminent domain or
conveyed under threat of such a taking or condemnation, or access to the
Premises precluded by any such event, either Landlord or Tenant may cancel and
terminate this Lease as it affects the portion of the Premises taken, or the
portion to which access is precluded, by giving notice to the other within ten
(10) days after the date on which title to the property taken vests in the
condemnor.  If this Lease is not terminated as to all of the Premises following
any of said actual takings or conveyances of any part of the Premises, then
Landlord shall, to the extent of an equitable proportion of the award for the
portion of the Premises taken (excluding any award for land), make such repairs
to the Premises as are necessary to constitute a complete architectural and
tenantable unit.  In the event of a partial taking or conveyance of the
Premises, Landlord shall allow Tenant a fair diminution of rental.  Tenant shall
not be entitled  to claim, or have paid to Tenant, any compensation or damages
whatsoever for or on account of any taking or conveyance of any right, interest
or estate of Tenant under this Lease, and Tenant hereby relinquishes and assigns
to Landlord any rights to any such compensation or damages.  Tenant does not
hereby waive or release claims for moving expenses, inconvenience or business
interruption related to a condemnation of the Premises, but any such claim shall
be asserted, if at all, in a proceeding independent of Landlord's primary
condemnation suit.

     13.  Default and Remedies.

          (a) Events of Default.  The following events shall be deemed to be
              -----------------
     events of default (the "events of default") by Tenant under this Lease:
                             -----------------
     (i) Tenant shall fail to pay within five (5) days of the due date Basic
     Rental, Additional Rental or any other rental or sums payable by Tenant
     hereunder; (ii) Tenant shall fail to comply with or observe any other
     provision of this Lease and such failure shall continue for ten (10) days
     after written notice to Tenant (or, in the case of Tenant's failure to
     comply with or observe any other single provision of this Lease more than
     three (3) times during the Lease Term, upon the occurrence of the fourth
     and all subsequent such failures, without notice from Landlord); (iii)
     Tenant or any guarantor of Tenant's obligations hereunder shall make a
     general assignment for the benefit of creditors; (iv) any petition shall be
     filed by or against Tenant or any guarantor of Tenant's obligations
     hereunder under the United States Bankruptcy Code, as amended, or under any
     similar law or statute of the United States or any state thereof, and such
     petition shall not be dismissed within forty-five (45) days of filing, or
     Tenant or any guarantor of Tenant's obligations hereunder shall be adjudged
     bankrupt or insolvent in proceedings filed thereunder; (v) a receiver or
     trustee shall be appointed for all or substantially all of the assets of
     Tenant or any guarantor of Tenant's obligations hereunder, and such
     appointment shall not be vacated or otherwise terminated, and the action in
     which such appointment was ordered dismissed, within forty-five (45) days
     of filing; (vi) Tenant shall fail to take possession of or shall desert,
     abandon or vacate the Premises; (vii) the death of any guarantor; or (viii)
     the occurrence of an event described in clauses (iv) or (v) of this
     Paragraph 13(a) and the failure thereafter of Tenant (A) to timely and
     ---------------
     fully make any payment of rent or any other sum of money due hereunder or
     (B) to perform or observe any other covenant, condition or agreement to be
     performed or observed by it hereunder.

          (b) Remedies.  Upon the occurrence of any event of default specified
              --------
     in this Lease, Landlord shall have the option to pursue any one or more of
     the following remedies without any notice or demand whatsoever and without
     releasing Tenant from any obligation under this Lease:

                                       8
<PAGE>

               (i) Landlord may enter the Premises without terminating this
          Lease and perform any covenant or agreement or cure any condition
          creating or giving rise to an event of default under this Lease and
          Tenant shall pay to Landlord on demand, as additional rent, the amount
          expended by Landlord in performing such covenants or agreements or
          satisfying or observing such  condition.  Landlord or its agents or
          employees shall have the right to enter the Premises, and such entry
          and such performance shall not terminate this Lease or constitute an
          eviction of Tenant.

               (ii) Landlord may terminate this Lease by written notice to
          Tenant (and not otherwise) or Landlord may terminate Tenant's right of
          possession without terminating this Lease.  In either of such events,
          Tenant shall surrender possession of and vacate the Premises
          immediately and deliver possession thereof to Landlord, and Tenant
          hereby grants to Landlord full and free license to enter the Premises,
          in whole or in part, with or without process of law and to expel or
          remove Tenant and any other person, firm or corporation who may be
          occupying the Premises or any part thereof and remove any and all
          property therefrom, using such lawful force as may be necessary.

               (iii)  In the event Landlord elects to re-enter or take
          possession of the Premises after Tenant's default, with or without
          terminating this Lease, Landlord may change or pick locks or alter
          security devices and lock out, expel or remove Tenant and any other
          person who may be occupying all or any part of the Premises without
          being liable for any claim for damages.   Notwithstanding anything to
          the contrary contained herein or in section 93.002 of the Texas
          Property Code, Landlord may exercise any and all of its rights or
          remedies under this Lease following an event of default by Tenant
          without compliance with section 93.002 of the Texas Property Code, the
          benefits of which are hereby expressly waived by Tenant.

               (iv) If Landlord elects to re-enter or take possession of the
          Premises without terminating this Lease, then Tenant shall be liable
          for and shall pay to Landlord all Basic Rental and any other amounts
          of money due to Landlord hereunder as of the date of such election.
          Tenant shall also pay to Landlord all Basic Rental required to be paid
          by Tenant during the remainder of the Lease Term as such amounts
          become due, diminished by any net sums received by Landlord, if any,
          through reletting the Premises during said period (after deducting all
          expenses incurred by Landlord in connection with any reletting of the
          Premises).  Landlord is not obligated to relet the Premises, and if no
          reletting occurs, Tenant shall be responsible for the full amounts
          due.  If Landlord elects to relet, Landlord shall have the sole and
          unfettered right to relet all or any part of the Premises for such
          rent and upon such terms as shall be satisfactory to Landlord
          (including but not limited to the right to relet the Premises for a
          term shorter or longer than that remaining under this Lease, the right
          to relet the Premises as a part of a larger area and the right to
          change the character or use made of the Premises).  Tenant shall not
          in any event be entitled to any sums collected in connection with a
          reletting of the Premises that exceed the amount of Basic Rental and
          other sums of money due hereunder.  Landlord shall not be required to
          wait until the expiration of the Lease Term in order to collect any
          such deficiencies, and shall have the right to file suit from time to
          time, on one or more occasions, to collect the deficiencies then due.
          Any such suit shall not prejudice in any way the right of Landlord to
          bring similar actions for any subsequent deficiency or deficiencies.

               (v) Notwithstanding any prior election by Landlord to terminate
          this Lease, Landlord may at any time, including subsequent to any re-
          entry or taking of possession of the Premises as allowed hereinabove,
          elect to terminate this Lease.  Tenant shall be liable for and shall
          immediately pay to Landlord the amount of all Basic Rental

                                       9
<PAGE>

          and other sums of money due under this Lease as may have accrued as of
          the date of termination. Tenant shall also immediately pay to
          Landlord, as agreed and liquidated damages, an amount of money equal
          to the Basic Rental and other amounts due for the remaining portion of
          the Lease Term (had such term not been terminated by Landlord prior to
          the expiration of the Lease Term), less the fair rental value of the
          Premises for the residue of the Lease Term, both discounted to their
          present value based upon an interest rate of eight percent (8%) per
          annum. In determining fair rental value, Landlord shall be entitled to
          take into account the time and expenses necessary to obtain a
          replacement tenant or tenants, including anticipated expenses
          hereinafter described relating to recovery, preparation and reletting
          of the Premises; provided, however, the parties hereto stipulate and
          agree that the fair rental value shall never be deemed to exceed
          eighty-five percent (85%) of the Basic Rental provided for herein for
          said residual period. If Landlord elects to relet the Premises, or any
          portion thereof, before presentation of proof of such liquidated
          damages, the amount of rent reserved upon such reletting shall be
          deemed prima facie evidence of the fair rental value of the portion of
          the Premises so relet.

               (vi) In addition to any sum provided to be paid above, Tenant
          shall also be liable for and shall immediately pay to Landlord all
          broker's fees incurred by Landlord in connection with any reletting of
          the whole or any part of the Premises, the costs of removing and
          storing Tenant's or any other occupant's property, the cost of
          repairing, altering, remodeling, renovating or otherwise putting the
          Premises into a condition acceptable to a new tenant or tenants, the
          cost of removal and replacement of signage and all reasonable expenses
          incurred by Landlord in enforcing Landlord's remedies, including
          reasonable attorneys' fees.

               (vii)  Landlord may apply Tenant's Security Deposit to the extent
          necessary to make good any rent arrearage, to pay the cost of
          remedying Tenant's default or to reimburse Landlord for expenditures
          made or damages suffered as a consequence of Tenant's default.
          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.

               (viii)  Nothing contained in this Paragraph 13(b) shall be
                                                 ---------------
          construed as imposing any enforceable duty upon Landlord to relet the
          Premises or otherwise mitigate or minimize Landlord's damages by
          virtue of Tenant's default.  Landlord shall not be liable in any
          manner, nor shall Tenant's obligations hereunder be diminished, by the
          failure of Landlord to relet the Premises, or in the event of
          reletting to collect rent.

          (c) Effect of Suit or Partial Collection.  Institution of a forcible
              ------------------------------------
     detainer action to re-enter the Premises shall not be construed to be an
     election by Landlord to terminate this Lease.  Landlord may collect and
     receive any rent due from Tenant and the payment thereof shall not
     constitute a waiver of or affect any notice or demand given, suit
     instituted or judgment obtained by Landlord, or be held to waive or alter
     the rights or remedies which Landlord may have at law or in equity or by
     virtue of this Lease at the time of such payment.

          (d) Remedies Cumulative.  All rights and remedies of Landlord herein
              -------------------
     or existing at law or in equity are cumulative and the exercise of one or
     more rights or remedies shall not be taken to exclude or waive the right to
     the exercise of any other.

     14.  Surrender of Premises.

          (a) Surrender.  Upon the expiration or termination of this Lease,
              ---------
     Tenant shall peaceably surrender to Landlord the Premises, including the
     alterations, improvements and

                                       10
<PAGE>

     changes (except as provided in Paragraph 14(b)) other than Tenant's
                                    ---------------
     fixtures remaining the property of Tenant, broom-clean and in the condition
     the same were in on the Commencement Date, subject only to damage caused by
     fire or other casualty not caused by the act or omission of Tenant or
     Tenant's agents, contractors or employees, or ordinary use and wear.

          (b) Removal of Alterations and Tenant's Property.
              --------------------------------------------

               (i) Notwithstanding anything in this Lease to the contrary, all
          permanent or built-in fixtures or improvements and all mechanical,
          electrical and plumbing equipment in the Premises, whether installed
          by Tenant or by Landlord, shall be the property of Landlord upon the
          termination of this Lease, unless Landlord, by notice to Tenant no
          later than twenty (20) days prior to the expiration of the Lease Term
          (or any renewal or extension thereof), elects to relinquish Landlord's
          right to any such fixtures or improvements and to have them removed
          from the Premises by Tenant within five (5) business days after the
          expiration of this Lease, at Tenant's sole cost and expense.  Except
          as otherwise provided, all furnishings, equipment, furniture, trade
          fixtures and other removable equipment installed in the Premises by
          Tenant and paid for by Tenant shall remain the property of Tenant and
          shall be removed by Tenant upon the  termination of this Lease.
          Tenant shall repair any damage caused by such removal.

               (ii) If any furnishings, equipment, furniture, trade fixtures or
          other removable equipment are not removed within five (5) business
          days after the expiration of this Lease, then Tenant hereby grants to
          Landlord the option, exercisable at any time thereafter without the
          requirement of any notice to Tenant, (A) to treat such property, or
          any portion thereof, as being abandoned by Tenant to Landlord,
          whereupon Landlord shall be deemed to have full rights of ownership
          thereof; (B) to elect to remove and store such property, or any
          portion thereof, on Tenant's behalf (but without assuming any
          liability to any person) and at Tenant's sole cost and expense, with
          reimbursement therefor to be made to Landlord upon demand; and/or (C)
          to sell, give away, donate or dispose of as trash or refuse any or all
          of such property without any responsibility to deliver to Tenant any
          proceeds therefrom.  If (a) Landlord elects not to exercise its
          contractual and/or statutory lien rights covering Tenant's property as
          may be granted herein, (b) Tenant ceases to occupy the Premises, or
          its rights to occupy the Premises are terminated by Landlord, prior to
          Landlord's termination or the expiration of this Lease and (c) any of
          Tenant's furnishings, equipment, furniture, trade fixtures or other
          removable equipment are not removed within five (5) business days
          thereafter, then Tenant hereby grants to Landlord the option,
          exercisable at any time thereafter without the requirement of notice
          to Tenant, (i) to treat such property, or any portion thereof, as
          being abandoned by Tenant to Landlord, whereupon Landlord shall be
          deemed to have full rights of ownership thereof; (ii) to elect to
          remove and store such property, or any portion thereof, on Tenant's
          behalf (but without assuming any liability to any person) and at
          Tenant's sole cost and expense, with reimbursement therefor to be made
          to Landlord upon demand; and/or (iii) to sell, give away, donate or
          dispose of as trash or refuse any or all of such property without
          responsibility to deliver to Tenant any proceeds therefrom.  Landlord
          shall have no liability of any kind whatsoever to Tenant in respect of
          the exercise or failure to exercise the options set forth in this
          Paragraph 14(b).  Specifically, Tenant shall not have the right to
          ---------------
          assert against Landlord a claim either for the value, or the use, of
          any such property, either as an offset against any amount of money
          owing to Landlord or otherwise.  The provisions of this Paragraph
                                                                  ---------
          14(b) shall supersede the provisions of section 93.002(d) and (e) of
          -----
          the Texas Property Code, as such may be amended from time to time, and
          any other law which purports to restrict the options granted to
          Landlord herein.

                                       11
<PAGE>

     15.  Holding Over.  If Tenant remains in possession of the Premises after
the expiration of the tenancy created hereunder and without the execution of a
new lease, Tenant shall be deemed to be occupying the Premises as a tenant at
will and subject to all of the provisions of this Lease except those relating to
term and except that the Basic Rental and Additional Rental shall be 150% of
the amount payable during the last month of the Lease Term (without waiver of
Landlord's right to recover damages as permitted by law).  Said tenancy may be
terminated by Landlord or Tenant by giving written notice to the other at any
time.

     16.  Mortgages.  This Lease shall be subordinate to all deeds of trust now
or hereafter encumbering the Building, and all refinancings, replacements,
renewals, modifications, extensions or consolidations thereof.  Tenant agrees to
attorn to any mortgagee, trustee under a deed of trust or purchaser at a
foreclosure sale or trustee's sale as Landlord under this Lease.  Tenant
covenants and agrees that Tenant shall within five (5) days after Landlord's
request execute in recordable form and deliver to Landlord whatever instruments
may be required to acknowledge and further evidence the subordination of this
Lease and/or the attornment by Tenant to such mortgagee, trustee or purchaser.
If Tenant within five (5) business days after submission of any such instrument
fails to execute the same, Landlord is hereby authorized to execute the same as
attorney-in-fact for Tenant.  Any holder of a deed of trust covering all or any
part of the Building may at any time elect to have this Lease have priority over
its deed of trust by executing unilaterally an instrument of subordination or
placing a clause of such subordination in any pleadings or in its deed of trust
and recording the same.

     17.  Certain Rights Reserved by Landlord.  Landlord shall have the
following rights:

          (a) Common and Service Area Alterations.  To decorate and to make
              -----------------------------------
     repairs, alterations, additions, changes or improvements, whether
     structural or otherwise, in, about or on the exterior of the Building, or
     any part thereof, and to change, alter, relocate, remove or replace service
     areas and/or common areas; to place, inspect, repair and replace in the
     Premises (below floors, above ceilings or next to columns) utility lines,
     pipes and the like to serve other areas of the Building outside the
     Premises; and to otherwise alter or modify the Project, and for such
     purposes to enter upon the Premises and, during the continuance of any such
     work, to take such measures for safety or for the expediting of such work
     as may be required, in Landlord's judgment, all without affecting any of
     Tenant's obligations hereunder, provided Landlord's entries in the Premises
     shall be subject to the terms of Paragraph 18(l).
                                      ---------------

          (b) Parking.  To permit Tenant and its employees to use the parking
              -------
     garage associated with the Building and the surface parking area adjacent
     thereto only in accordance with rules and regulations promulgated from time
     to time by Landlord and/or the operator of the garage at such charges as
     then may be in effect; and to prohibit Tenant and its  employees to use any
     on-site surface parking spaces within the Project designated for visitors,
     occupants of the Building, or otherwise.  Parking spaces will be
     unassigned, provided that Landlord may at any time assign parking spaces.
     Tenant shall, if requested by Landlord, furnish to Landlord a complete list
     of the license plate numbers of all vehicles operated by Tenant and
     Tenant's employees and agents.  Landlord shall not be liable for any damage
     of any nature whatsoever to, or any theft of, vehicles, or contents
     therein, in or about such parking facility.

          (c) Rules and Regulations.  To establish and amend from time to time
              ---------------------
     rules and regulations governing all tenants' use and occupancy of the
     Building, provided that in the event of a conflict between those rules and
     this Lease, this Lease shall control.  The rules and regulations now
     enforced by Landlord are available upon request.

          (d) Food Preparation.  To prohibit the preparation of food within the
              ----------------
     Premises for commercial purposes or the placing of vending or dispensing
     machines of any kind in or about the Premises if such vending or dispensing
     machines are available to the general public.

                                       12
<PAGE>

          (e) Security Measures.  To take all such reasonable  measures as
              -----------------
     Landlord may deem advisable for the security of the Building and its
     occupants.  Landlord, however, shall have no liability to Tenant or its
     employees, agents, invitees or licensees for losses due to theft or
     burglary, or for damage done by unauthorized persons in or about the
     Building or Premises.  Landlord may require those tenants requesting access
     to the Building during other than normal business hours to pay its then
     prevailing fee for each magnetic access card which Landlord supplies to
     Tenant for after-hours access to the Building.  Tenant shall cooperate
     fully in Landlord's efforts to maintain security in the Building and shall
     follow all regulations promulgated by Landlord with respect thereto.

          (f) Right To Relocate Tenant.  At any time after the execution of this
              ------------------------
     Lease and on sixty (60) days prior written notice, Landlord may substitute
     for the Premises other comparable premises in the Building (the "New
                                                                      ---
     Premises"), in which event the New Premises shall be deemed to be the
     --------
     Premises for all purposes hereunder, provided:  (a) the New Premises shall
     be similar in area, finish and appropriateness for the Permitted Use; (b)
     the Basic Rental and other rentals payable under this Lease shall remain
     the same; and (c) reasonable out-of-pocket costs in connection with
     relocation to the New Premises shall be reimbursed by Landlord after
     receipt of third party invoices therefor.

     18.  Miscellaneous.

          (a) Time Is of the Essence.  The time of the performance of all of the
              ----------------------
     covenants, conditions and agreements of this Lease is of the essence of
     this Lease.

          (b) Force Majeure.  If either Landlord or Tenant is  prevented or
              -------------
     hindered from timely satisfying any provisions set forth herein because of
     a shortage of or inability to obtain materials or equipment, strikes or
     other labor difficulties, governmental restrictions, casualties or any
     other cause beyond such party's reasonable control, such party shall be
     permitted an extension of time of performance by the number of days during
     which such performance was prevented or hindered; provided, however, that
     this paragraph shall not apply to the payment of rent or other monies by
     Landlord or Tenant, nor shall the provisions of this paragraph postpone the
     date that rent is payable pursuant to this Lease, except as expressly
     provided to the contrary in Paragraph 4.
                                 -----------

          (c) No Personal Liability of Landlord.  If Landlord shall fail to
              ----------------------------------
     perform any covenant, term or condition of this Lease and, as a
     consequence, if Tenant shall recover a money judgment against Landlord,
     such judgment shall be satisfied only out of the proceeds received at a
     judicial sale upon execution and levy against the right, title and interest
     of Landlord in the Building and in the rents or other income from the
     Building receivable by Landlord, and neither Landlord nor Landlord's
     owners, partners or venturers shall have any personal, corporate or other
     liability hereunder.  Landlord shall have the right to transfer, assign and
     convey, in whole or in part, the Building and any and all of its rights
     under this Lease, and in such event, Landlord shall thereby be released
     from any further obligations hereunder, and Tenant agrees to look solely to
     such successor-in-interest of Landlord for performance of such obligation.

          (d) Quiet Enjoyment.  Landlord hereby covenants and agrees that if
              ----------------
     Tenant shall perform all of the covenants and agreements herein stipulated
     to be performed on Tenant's part, Tenant shall at all times during the
     continuance hereof have peaceable and quiet enjoyment and possession of the
     Premises without hindrance from Landlord or any person or persons lawfully
     claiming the Premises  by or through Landlord, subject, however, to the
     terms of this Lease and to all mortgages, deeds of trust, leases and
     agreements to which this Lease is subordinate.

          (e) Entire Agreement and Amendments.  This Lease is the only agreement
              --------------------------------
     between the parties hereto and their representatives and agents.  There are
     no representations or

                                       13
<PAGE>

     warranties between the parties other than the representations and
     agreements contained in this document. No agreement shall be effective to
     change, modify or terminate this Lease in whole or in part unless such
     agreement is in writing and duly signed by the party against whom
     enforcement of such change, modification or termination is sought.

          (f) Interpretation.  The necessary grammatical changes required to
              ---------------
     make the provisions of this Lease apply in the plural sense where there is
     more than one Tenant and to either corporations, associations, partnerships
     or  individuals, male or female, shall in all instances be assumed as
     though in each case fully expressed.  The laws of the State of Texas shall
     govern the validity, performance and enforcement of this Lease.  The venue
     for any legal proceeding brought by any party or guarantor to this lease
     shall be Dallas County, Texas.  If this Lease is executed by more than one
     person or entity as "Tenant," each such person or entity executing this
     Lease as Tenant shall be jointly and severally bound and liable hereunder.

          (g) Severability.  No provision of this Lease shall be construed or
              -------------
     interpreted in any manner which would render such provision invalid.  If
     any provision of this Lease is held to be invalid, such invalid provision
     shall be deemed to be severable from and shall not affect the validity of
     the remainder of this Lease.

          (h) Terms Binding.  Subject to the limitations on subletting and
              --------------
     assignment set forth in this Lease, all covenants, promises, conditions,
     representations and agreements herein contained shall be binding upon and
     apply and inure to the benefit of the parties hereto and their respective
     heirs, executors, administrators, successors and assigns.

          (i) Estoppel Certificates.  Within five (5) days after request by
              ----------------------
     Landlord, Tenant agrees to execute and deliver to Landlord estoppel or
     offset letters as required by Landlord or by Landlord's lenders.  The
     letters shall certify the date of this Lease and any amendments, that
     Landlord is not in default of any of the terms and provisions of this Lease
     or specifying the provisions as to which Landlord is in default if Landlord
     shall be in default, that Landlord has performed all inducements required
     of Landlord in connection with this Lease, including any construction
     obligations, specifying any inducements which have not been fulfilled by
     Landlord, the date to which rent has been paid, and any other matters which
     Landlord or its lenders may reasonably require.  Tenant further agrees to
     furnish to Landlord from time to time when requested by Landlord a letter
     of acceptance in conformity with any requirements made by any existing or
     proposed lenders.

          (j) Late Payment Charge and Interest Payable.  Landlord may impose a
              -----------------------------------------
     late payment charge equal to five percent (5%) of any amount due if not
     paid within five (5) days from the date required to be paid hereunder.  In
     addition, any payment due under this Lease not paid within ten (10) days
     after the date herein specified to be paid shall bear interest from the
     date such payment is due to the date of actual payment at the rate of
     eighteen percent (18%) per annum or the highest lawful rate of interest
     permitted by Texas or federal law, whichever rate of interest is lower.

          (k) Security Deposit.  Landlord shall hold Tenant's Security Deposit
              -----------------
     without interest, and the same shall not be considered prepaid rent or a
     measure of Landlord's damages in case of default by Tenant.  The remaining
     balance of the Security Deposit (after application of any part thereof in
     accordance with Paragraph 13(b) or for necessary repairs to the Premises)
                     ---------------
     shall be refundable to Tenant within thirty (30) days after termination of
     this Lease.

          (l) Access to Premises.  Tenant agrees that Landlord and its agents
              -------------------
     may enter the Premises for the purpose of inspecting and making such
     repairs (structural or otherwise), additions, improvements, changes or
     alterations to the Premises or the Building as may be permitted or required
     under this Lease or as Landlord may elect, and to exhibit the same to


                                       14
<PAGE>

     prospective purchasers, mortgagees or tenants.  In the event of any such
     repairs, additions, improvements, changes or alterations, Tenant shall
     cooperate with Landlord to facilitate Landlord's efforts.  Landlord's
     entries in the Premises shall be preceded  by reasonable notice (except in
     the case of an emergency) and shall not unreasonably interfere with
     Tenant's use and occupancy of the Premises for the Permitted Use.

          (m) Notices.  Notices hereunder must be hand-delivered or sent by
              --------
     Registered Mail, Return Receipt Requested, postage prepaid, addressed, if
     to Landlord, at Suite 650, Prestonwood Tower, 5151 Belt Line Road, Dallas,
     Texas 75240, Attention:  Building Manager, with a copy to Prestonwood
     Tower, Inc., 315 Central Park West, Suite 1200, New York, New York, 10025,
     Attention:  Sinclair Haberman; and if to Tenant, at the address specified
     for Tenant in Paragraph 1(a) above prior to the Commencement Date and to
                   --------------
     the Premises thereafter, or to such other address as may be specified by
     written notice actually received by Landlord.  Notice shall be deemed given
     upon tender of delivery (in the case of a hand-delivered notice) or upon
     the first attempted delivery by United States Postal Service (in the case
     of a registered letter), provided that no notice of either party's change
     of address shall be effective until fifteen (15) days after the addressee's
     actual receipt thereof.

          (n) Acceptance of Premises and Building by Tenant.  LANDLORD HEREBY
              ---------------------------------------------
     DISCLAIMS ANY EXPRESS OR IMPLIED REPRESENTATION OR WARRANTY THAT THE
     PREMISES ARE SUITABLE FOR TENANT'S INTENDED PURPOSE OR USE.  THE TAKING OF
     POSSESSION BY TENANT SHALL BE CONCLUSIVE EVIDENCE THAT TENANT:

               (I) ACCEPTS THE PREMISES AS SUITABLE FOR THE PURPOSES FOR WHICH
          THEY WERE LEASED;

               (II) ACCEPTS THE BUILDING AND EVERY PART AND APPURTENANCE THEREOF
          AS BEING IN GOOD AND SATISFACTORY CONDITION; AND

               (III)  WAIVES ANY DEFECTS IN THE PREMISES AND ITS APPURTENANCES
          EXISTING NOW OR IN THE FUTURE, EXCEPT THAT TENANT'S TAKING OF
          POSSESSION SHALL NOT BE DEEMED TO WAIVE LANDLORD'S COMPLETION OF MINOR
          FINISH WORK ITEMS THAT DO NOT INTERFERE WITH TENANT'S OCCUPANCY OF THE
          PREMISES.

     TENANT ACKNOWLEDGES THE DISCLAIMER BY LANDLORD SET FORTH HEREIN AND WAIVES
     ALL CLAIMS BASED ON ANY IMPLIED WARRANTY OF SUITABILITY.  FURTHERMORE,
     TENANT CONFIRMS THAT ITS OBLIGATIONS TO PAY BASIC RENTAL, ADDITIONAL RENTAL
     AND OTHER AMOUNTS OF MONEY DUE TO LANDLORD HEREUNDER ARE NOT DEPENDENT ON
     THE CONDITION OF THE PREMISES OR THE BUILDING, THE COMPLETION OF ANY MINOR
     FINISH WORK ITEMS OR THE PERFORMANCE BY LANDLORD OF ITS OBLIGATIONS
     HEREUNDER.  TENANT SHALL CONTINUE TO PAY BASIC RENTAL, ADDITIONAL RENTAL
     AND OTHER AMOUNTS OF MONEY DUE TO LANDLORD HEREUNDER, WITHOUT ABATEMENT,
     SETOFF OR DEDUCTION, NOTWITHSTANDING ANY BREACH OR ALLEGED BREACH BY
     LANDLORD OF ITS OBLIGATIONS HEREUNDER.

          (o) Building Name.  Landlord shall have the exclusive right at all
              --------------
     times during the Lease Term to change, modify, add to or otherwise alter
     the name of the Building, and Landlord shall not be liable for claims or
     damages of any kind which may be attributed thereto or result therefrom.

                                       15
<PAGE>

          (p) Landlord's Lien.  In addition to the statutory landlord's lien,
              ---------------
     Landlord shall have at all times a valid security interest to secure
     payment of all rentals and other sums of money becoming due hereunder from
     Tenant, and to secure payment of any damage or loss which Landlord may
     suffer by reason of the breach by Tenant of any covenant, agreement or
     condition contained herein, upon all goods, wares, equipment, fixtures,
     furniture, improvements and other personal property of Tenant presently or
     which may hereafter be situated in the Premises and all proceeds therefrom,
     and such property shall not be removed therefrom without the consent of
     Landlord until all arrearages in rent as well as any and all other sums of
     money then due to Landlord hereunder shall first have been paid and
     discharged and all the covenants, agreements and conditions hereof have
     been fully complied with and performed by Tenant. Upon the occurrence of an
     event of default by Tenant, Landlord may, in addition of any other remedies
     provided herein, enter upon the Premises and take possession of any and all
     goods, wares, equipment, fixtures, furniture, improvements and other person
     property of Tenant situated in the Premises, without liability for trespass
     or conversion, and sell the same at public or private sale, with or without
     having such property at the sale, after giving Tenant reasonable notice of
     the time and place of any public sale or of the time after which any
     private sale is to made, at which sale(s) Landlord or its assigns may
     purchase unless otherwise prohibited by law.  Unless otherwise provided by
     law, and without intending to exclude any other manner of giving Tenant
     reasonable notice, the requirement of reasonable notice shall be met if
     such notice is given at least five (5) days before the time of sale.  Such
     notice shall be deemed to be delivered if personally delivered or when
     deposited in the United States mail, postage prepaid, certified or
     registered mail (with or without return receipt requested), addressed to
     the parties hereto at the addresses as shown herein, whether or not
     actually received.  The proceeds from any such disposition, less any and
     all expenses connected with the taking of possession, holding and selling
     of the property (including reasonable attorneys' fees and other expenses),
     shall be applied as a credit against the indebtedness secured by the
     security interest granted in this paragraph.  Any surplus shall be paid to
     Tenant or as otherwise required by law; and Tenant shall pay any
     deficiencies forthwith.  Upon request by Landlord, Tenant agrees to execute
     and deliver to Landlord a financing statement in form sufficient to perfect
     the security interest of Landlord in aforementioned property and proceeds
     thereof under the provisions of the Uniform Commercial Code in force in the
     State of Texas.  The statutory lien for rent is not hereby waived, the
     security interest herein granted being in addition and supplementary
     thereto.  Landlord shall be entitled to file a carbon, photographic or
     other reproduction of this lease as a financing statement as is permitted
     under section 9.402(a) of the Texas Business and Commerce Code.

          (q) Authority To Sign Lease.  If Tenant is a corporation or a
              ------------------------
     partnership (general or limited), each person(s) signing this Lease as an
     officer or partner of Tenant represents to Landlord that such person(s) is
     authorized to execute this Lease without the necessity of obtaining any
     other signature of any other officer or partner, that the execution of this
     Lease has been authorized by the board of directors of the corporation or
     by the partners of the partnership, as the case may be, and that this Lease
     is fully binding on Tenant.  Landlord reserves the right to request
     evidence of the approval of this Lease and authorization of Tenant's
     signatories to bind Tenant, which evidence shall be satisfactory in form
     and content to Landlord and its counsel.

          (r) Attorneys' Fees, Costs and Expenses.  In the event either party is
              -----------------------------------
     in default beyond any applicable grace or notice period in the performance
     of any of the terms of this Lease and the other party employs an attorney
     in connection therewith, the nonprevailing party agrees to pay the
     prevailing party's reasonable attorneys' fees.  Whenever any request or
     action by Tenant reasonably causes Landlord to engage an attorney
     (including an in-house attorney of Landlord or any of its affiliates) or
     incur any other costs or expenses, Tenant agrees that it shall pay or
     reimburse Landlord for such costs or expenses upon demand.

                                       16
<PAGE>

          (s) Execution of Lease.  The submission of this Lease for examination
              ------------------
     does not constitute a reservation of or option for the Premises or any
     other space within the Building and shall vest no right in either party.
     This Lease shall become effective only upon the full execution and delivery
     hereof by all of the parties hereto.

          (t) No Attornment.  All checks tendered to Landlord as and for the
              -------------
     Basic Rental and/or Additional Rental required hereunder shall be deemed
     payments for the account of Tenant.  Acceptance by Landlord of Basic Rental
     and/or Additional Rental from anyone other than Tenant shall not be deemed
     to operate as an attornment to Landlord by the payor of such Basic Rental
     and/or Additional Rental or as a consent by Landlord to an assignment of
     this Lease or subletting by Tenant of the Premises to such payor, or as a
     modification of any of the provisions of this Lease.

          (u) Arms-Length Transaction.  This Lease has been entered into by the
              -----------------------
     undersigned after arms-length negotiation, with each party acknowledging
     that it and its counsel, if it so chooses, have had an opportunity to
     review this Lease, and therefore, the parties agree that this Lease shall
     not be construed against Landlord on the ground that Landlord's
     representatives prepared this Lease.

          (v) Exhibits and Riders.  The following exhibits and riders are
              --------------------
     attached hereto, incorporated herein and made a part of this Lease for all
     purposes:

               Exhibit A-1:  Floor Plan of Premises
               Exhibit A-2:  Property Description
               Exhibit _____:
               Exhibit _____:

               Riders: (check if attached and applicable)

               _______  (I)
               _______  (II)

19.  Special Provisions.

     This lease is entirely contingent upon Landlord's ability to acquire the
space from the existing tenant currently under lease for Suite 955 and
Landlord's ability to obtain a waiver of all rights of refusal and/or options
that may exist on the  premises by March 31, 1997.

                                       17
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Lease as of the day and year first above written.

TENANT:                                 LANDLORD:

TURBOCHEF, INC.                         PRESTONWOOD TOWER, INC.
                                        a Texas corporation
By:
    -------------------------------
Name:
     ------------------------------    By:
Title:                                    ----------------------------
      -----------------------------       Sinclair Haberman, Secretary


                                       18
<PAGE>

                                  Exhibit A-1











                           [FLOORPLAN APPEARS HERE]







<PAGE>

                                  Exhibit A-1









                           [FLOORPLAN APPEARS HERE]








<PAGE>

                                  EXHIBIT A-2

                               PRESTONWOOD TOWER

                             PROPERTY DESCRIPTION

The description of Lot 1, City Block 2/8708 Prestonwood Tower Addition, an
addition to the City of Dallas as recorded in Volume 78240, Page 0349, Dallas
County Plat Records, said Lot 1 also being situated in the Robert Wilburn
Survey, Abstract No. 1580, Dallas County, Texas, said Lot 1 also being a portion
of that certain tract of land as described in the deed to Caroline Hunt Trust
Estate, by Deed recorded in Volume 77065, Page 3243, Dallas County Deed Records,
said Lot 1 being more particularly described as follows:

BEGINNING at a 1/2 inch iron rod in the north right-of-way line of Belt Line
Road (width varies), said iron rod being the southwest corner of Prestonwood
Town Center, an addition to the City of Dallas, Texas, and recorded in Volume
78053, Page 3, Dallas County Deed Records;

THENCE S 89 30' 00" W along the north line of said Belt Line Road for a distance
of 500.53 feet to a found 5/8 inch iron rod for corner, said iron rod being the
southeast corner of a tract of land conveyed to Prestonwood National Bank;

THENCE N 03 06' 53" W along the westerly line of said Lot 1 and the easterly
line of said bank tract for a distance of 644.14 feet to a found "X" cut in
concrete, said point being the northeast corner of said bank tract;

THENCE N 79 30' 00" W along the north line of said bank tract for a distance of
115.57 feet to a found "X" cut in concrete, said point being in the easterly
right-of-way line of Dallas Parkway (200 foot R.O.W.);

THENCE N 10 30' 00" E along the easterly line of said Dallas Parkway for a
distance of 25.00 feet to a 1/2 inch iron rod set for corner, said point being
the southwest corner of Lot 2, Block 2/8708;

THENCE S 79 30' 00" E along the common lot line of said Lot 1 and Lot 2 for a
distance of 141.00 feet to a 1/2 inch iron rod set for corner;

THENCE S 45 28' O5" E along said common lot line for a distance of 30.94 feet to
"PK" nail set in asphalt drive for corner;

THENCE N 89 31' 55" E along said common lot line for a distance of 320.14 feet
to a "PK" nail set in asphalt drive for corner;

THENCE S 45 00' 00" E along said common lot line for a distance of 38.05 feet to
a "PK" nail set in asphalt drive for corner;

THENCE N 45 00' 00" E continuing along said common lot line for a distance of
30.00 feet to a "PK" nail set in asphalt drive for corner, said point being in
the westerly line of the aforementioned Prestonwood Town Center Addition;

THENCE S 45 00' 00" E along the westerly line of said Prestonwood Town Center
Addition and the easterly line of Lot 1, for a distance of 120.00 feet to a 1/2
inch iron rod set for corner;

THENCE S 03 12' 30" E continuing along the westerly line of said Prestonwood
Town Center Addition and the easterly line of said Lot 1, for a distance of
550.00 feet to the POINT OF BEGINNING.

CONTAINING 319,757.50 square feet or 7.341 acres of land.