Document:

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                                                                     EXHIBIT 4.7

                            ASSET PURCHASE AGREEMENT

                                  BY AND AMONG

                            TYLER TECHNOLOGIES, INC.,
                                  KOFILE, INC.,
                              SPECTRUM DATA, INC.,
                               ei SOLUTIONS, INC.,
                         KOFILE ACQUISITION CORPORATION
                                       AND
                      SPECTRUM DATA ACQUISITION CORPORATION

                         DATED AS OF SEPTEMBER 29, 2000

Asset Purchase Agreement

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                            ASSET PURCHASE AGREEMENT

         THIS ASSET PURCHASE AGREEMENT (this "Agreement") is made as of
September 29, 2000, by and among Tyler Technologies, Inc., a Delaware
corporation ("Tyler"),Kofile, Inc., a Texas corporation ("Old Kofile"), Spectrum
Data, Inc., a Texas corporation ("Old Spectrum" and, together with Tyler and Old
Kofile, the "Sellers"), ei Solutions, Inc., a Delaware corporation ("ei
Solutions"), Kofile Acquisition Corporation, a Delaware corporation ("New
Kofile"), Spectrum Data Acquisition Corporation, a Texas corporation ("New
Spectrum" and, together with ei Solutions and New Kofile, the "Purchasers").

                                    RECITALS

         A. Old Kofile and Old Spectrum are wholly owned subsidiaries of BRC and
indirect wholly owned subsidiaries of Tyler.

         B. Old Kofile is in the business of providing document management
solutions and software, including, without limitation, document storage and
retrieval and OCR and ICR products, and related sales and support (the "Kofile
Business").

         C. Old Spectrum is in the business of providing system analysis and
design, custom programming, network design, implementation and maintenance,
document imaging and management integration (the "Spectrum Business").

         D. Old Kofile desires to sell to New Kofile the Kofile Business as a
going concern and in connection therewith substantially all of the assets of Old
Kofile, and New Kofile desires to purchase such business and assets and assume
substantially all the liabilities of Old Kofile relating thereto, upon the terms
and conditions set forth in this Agreement (the "Kofile Purchase").

         E. Old Spectrum desires to sell to New Spectrum the Spectrum Business
as a going concern and in connection therewith substantially all of the assets
of Old Spectrum, and New Spectrum desires to purchase such business and assets
and assume substantially all the liabilities of Old Spectrum relating thereto,
upon the terms and conditions set forth in this Agreement (the "Spectrum
Purchase").

         F. BRC and Old Spectrum are selling certain real property to Real
Property Purchaser upon the terms and conditions set forth in the Real Property
Purchase Agreement (the "Real Property Purchases").

         G. Tyler desires to sell certain intangible property to ei Solutions,
and ei Solutions desires to purchase such intangible property from Tyler, upon
the terms and conditions set forth in this Agreement (the "Intangibles
Purchase").

         NOW, THEREFORE, in consideration of the premises and of the mutual
agreements, representations, warranties, provisions and covenants contained
herein, the parties hereto, intending to be legally bound, agree as follows:

Asset Purchase Agreement

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                                    ARTICLE I
                                   DEFINITIONS

         1.1. DEFINITIONS. Capitalized terms used in this Agreement shall have
the following meanings:

         "AAA" shall have the meaning set forth in Section 12.9(b).

         "Affiliate" of, or "Affiliated" with, a specified person or entity
means a person or entity that directly, or indirectly through one or more
intermediaries, controls, or is controlled by, or is under common control with,
the specified person or entity.

         "Agreed Kofile Net Asset Value" has the meaning set forth in Section
5.6(a).

         "Agreed Net Asset Value" has the meaning set forth in Section 5.6(a).

         "Agreed Spectrum Net Asset Value" has the meaning set forth in Section
5.6(a).

         "Agreement" has the meaning set forth in the first paragraph of this
Agreement.

         "Asset Purchases" means the Kofile Purchase, the Spectrum Purchase, the
Real Property Purchases and the Intangibles Purchase.

         "Assets" means the Kofile Assets, the Spectrum Assets, the Real
Property and the Intangibles.

         "Assumed Contracts" means the Assumed Kofile Contracts and the Assumed
Spectrum Contracts.

         "Assumed Kofile Contracts" has the meaning set forth in Section 2.3.

         "Assumed Kofile Liabilities" means the liabilities and obligations of
Old Kofile to be assumed by New Kofile at the Closing in accordance with Section
2.4.

         "Assumed Liabilities" means the Assumed Kofile Liabilities and the
Assumed Spectrum Liabilities.

         "Assumed Spectrum Contracts" has the meaning set forth in Section 3.3.

         "Assumed Spectrum Liabilities" means the liabilities and obligations of
Old Spectrum to be assumed by New Spectrum at the Closing in accordance with
Section 3.4.

         "BRC" means Business Resources Corporation, a Texas corporation.

         "Businesses" means the Kofile Business and the Spectrum Business.

         "Closing" has the meaning set forth in Section 5.3.

         "Closing Cash Balance" has the meaning set forth in Section 5.5(a).

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         "Closing Date" has the meaning set forth in Section 5.3.

         "Closing Kofile Net Asset Value" has the meaning set forth in Section
5.6(a).

         "Closing Spectrum Net Asset Value" has the meaning set forth in Section
5.6(a).

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Designated Parties" has the meaning set forth in Section 12.9(a).

         "ei Solutions" has the meaning set forth in the first paragraph of this
Agreement.

         "Encumbrances" means all liens, mortgages, pledges, security interests,
conditional sales agreements, charges, claims, options, liabilities,
obligations, preemptive rights, rights of first refusal, reservations,
restrictions or other defects in title or other encumbrances of any kind.

         "ESI Acquisition" has the meaning set forth in Section 4.2(a).

         "Excluded Contracts" means the Excluded Kofile Contracts and the
Excluded Spectrum Contracts.

         "Excluded Kofile Assets" has the meaning set forth in Section 2.2 .

         "Excluded Kofile Contracts" has the meaning set forth in Section 2.3.

         "Excluded Kofile Liabilities" has the meaning set forth in Section 2.5.

         "Excluded Spectrum Assets" has the meaning set forth in Section 3.2 .

         "Excluded Spectrum Contracts" has the meaning set forth in Section 3.3.

         "Excluded Spectrum Liabilities" has the meaning set forth in Section
3.5.

         "Expiration Date" has the meaning set forth in Section 12.5.

         "GAAP" means the generally accepted accounting principles in the United
States as currently applied by the respective party on a basis consistent with
preceding years and throughout the periods involved.

         "Governmental Authority" means any federal, state, local or foreign
government, political subdivision or governmental or regulatory authority,
agency, board, bureau, commission, instrumentality or court or
quasi-governmental authority.

         "Indemnified Party" has the meaning set forth in Section 9.3.

         "Indemnifying Party" has the meaning set forth in Section 9.3.

         "Intangibles" has the meaning set forth in Section 4.2.

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         "Intangibles Purchase" has the meaning set forth in Recital G.

         "Kodak" means Eastman Kodak Company, a New Jersey corporation.

         "Kofile Assets" has the meaning set forth in Section 2.1.

         "Kofile Bank Accounts" has the meaning set forth in Section 2.1(l).

         "Kofile Business" has the meaning set forth in the Recital B.

         "Kofile GmbH" means Kofile Germany GmbH, a limited liability company
organized under the laws of the Federal Republic of Germany.

         "Kofile Net Asset Value Adjustment" has the meaning set forth in
Section 5.6(a).

         "Kofile Purchase" has the meaning set forth in the Recital D.

         "Law" or "Laws" means any and all federal, state, local or foreign
statutes, laws, ordinances, proclamations, codes, regulations, licenses,
permits, authorizations, approvals, consents, legal doctrines, published
requirements, orders, decrees, judgments, injunctions and rules of any
Governmental Authority, including, without limitation, those covering
environmental, Tax, energy, safety, health, transportation, bribery,
recordkeeping, zoning, discrimination, antitrust and wage and hour matters, in
each case as amended and in effect from time to time.

         "Listed Assets and Liabilities" has the meaning set forth in Section
5.6(a).

         "Loss" or "Losses" means all liabilities, losses, claims, damages,
actions, suits, proceedings, demands, assessments, adjustments, fees, costs and
expenses (including specifically, but without limitation, reasonable attorneys'
fees and costs and expenses of investigation), net of (i) income Tax effects
with respect thereto (including, without limitation, income Tax benefits
recognized in connection therewith and income Taxes upon any indemnification
recovery thereof) and (ii) any insurance proceeds or recoveries in respect of
such losses.

         "Mockingbird Property" means that certain real property and
improvements thereon located at 2800 West Mockingbird Lane, Dallas, Texas, as
more particularly described in the Real Property Purchase Agreement.

         "Net Asset Value Adjustment" has the meaning set forth in Section
5.6(a).

         "Net Cash Adjustment" has the meaning set forth in Section 5.6(b).

         "New Kofile" has the meaning set forth in the first paragraph of this
Agreement.

         "New Spectrum" has the meaning set forth in the first paragraph of this
Agreement.

         "Oates" means William D. Oates.

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         "Old Kofile" has the meaning set forth in the first paragraph of this
Agreement.

         "Old Spectrum" has the meaning set forth in the first paragraph of this
Agreement.

         "Permits" means all licenses, franchises, permits, transportation
authorities and other governmental authorizations, operating authorizations,
titles (including motor vehicle titles and current registrations), fuel permits,
and certificates.

         "Permitted Encumbrances" means (a) any Encumbrances that constitute an
Assumed Liability, (b) Encumbrances for property or ad valorem Taxes not yet due
and payable or which are being contested in good faith and by appropriate
proceedings if adequate reserves with respect thereto are maintained on the
Company's accounting records in accordance with GAAP, (c) mechanics', carriers',
workers', repairmen's, statutory or common law liens being contested in good
faith by appropriate proceedings and (d) rights of the customers of the
respective Business with respect to inventory under orders or contracts entered
into by the respective Business in the ordinary course of business.

         "Post-Closing Adjustment" has the meaning set forth in Section 5.6.

         "Purchase Price" has the meaning set forth in Section 5.1.

         "Purchasers" has the meaning set forth in the first paragraph of this
Agreement.

         "Real Property" means the Mockingbird Property and the San Antonio
Property.

         "Real Property Purchase Agreement" has the meaning set forth in Section
4.1.

         "Real Property Purchaser" means, collectively, Oates and his wife,
Marilyn Oates.

         "Real Property Purchases" has the meaning set forth in Recital F.

         "San Antonio Property" means that certain real property and
improvements thereon located at 10537 Gulfdale, San Antonio, Texas 78216, as
more particularly described in the Real Property Purchase Agreement.

         "Sellers" has the meaning set forth in the first paragraph of this
Agreement.

         "Spectrum Assets" has the meaning set forth in Section 3.1.

         "Spectrum Bank Accounts" has the meaning set forth in Section 3.1(k).

         "Spectrum Business" has the meaning set forth in Recital C.

         "Spectrum Net Asset Value Adjustment" has the meaning set forth in
Section 5.6(a).

         "Spectrum Purchase" has the meaning set forth in Recital E.

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         "Taxes" means all taxes, charges, fees, levies or other assessments
including, without limitation, income, gross receipts, excise, property, sales,
withholding, social security, unemployment, occupation, use, service, service
use, license, payroll, franchise, transfer and recording taxes, fees and
charges, imposed by the United States or any state, local or foreign government
or subdivision or agency thereof, whether computed on a separate, consolidated,
unitary, combined or any other basis; and such term shall include any interest,
fines, penalties or additional amounts attributable to or imposed with respect
to any such taxes, charges, fees, levies or other assessments.

         "Transferred Kofile Cash" has the meaning set forth in Section 2.1(a).

         "Transferred Spectrum Cash" has the meaning set forth in Section
3.1(a).

         "Tyler" has the meaning set forth in the first paragraph of this
Agreement.

         "Third Person" has the meaning set forth in Section 9.3.

         1.2. INTERPRETATION. For all purposes of this Agreement, except as
otherwise expressly provided or unless the context otherwise requires:

                  (a) the terms defined in Section 1.1 and elsewhere in this
         Agreement include the plural as well as the singular;

                  (b) all accounting terms not otherwise defined herein have the
         meanings ascribed to them in accordance with GAAP;

                  (c) the words "herein," "hereof," and "hereunder" and other
         words of similar import refer to this Agreement as a whole and not to
         any particular Article, Section or other subdivision; and

                  (d) this Agreement is the joint drafting product of Sellers
         and Purchasers and each provision has been subject to negotiation and
         agreement and shall not be construed for or against any party as
         drafter thereof.

                                   ARTICLE II
                               THE KOFILE PURCHASE

         2.1. ACQUISITION OF THE KOFILE ASSETS. Upon the terms and subject to
the conditions of this Agreement, at the Closing, Old Kofile agrees to sell,
convey, transfer, assign and deliver to New Kofile, and New Kofile agrees to
purchase from Old Kofile, on an "AS IS, WHERE IS" basis, all of its assets,
properties, businesses, franchises, goodwill and rights of every kind and
character, tangible or intangible, real or personal, whether owned or leased,
other than the Excluded Kofile Assets, free and clear of all Encumbrances other
than Permitted Encumbrances and any created by New Kofile (collectively, the
"Kofile Assets"). Without limiting the generality of the foregoing, the Kofile
Assets shall consist of all such assets of Old Kofile as of the Closing,
including, without limitation, the following:

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                  (a) cash and cash equivalents as of the close of business on
         the Closing Date up to an aggregate amount, when taken together with
         the cash and cash equivalents transferred to New Spectrum pursuant to
         Section 3.1(a), of $200,000 (the "Transferred Kofile Cash").

                  (b) all accounts and notes receivable of Old Kofile, except
         for intercompany receivables;

                  (c) all inventory, work-in-progress and spare parts of Old
         Kofile;

                  (d) all customer lists, sales records, credit data and other
         information relating to customers of Old Kofile;

                  (e) all right, title and interest of Old Kofile in, to and
         under the Assumed Kofile Contracts, as provided in Section 2.3;

                  (f) all right, title and interest of Old Kofile in, to and
         under all source codes, object codes, design documentation and
         procedures for product generation and testing of the computer software
         related to the Business, including the trade secrets, know-how,
         inventions, designs, technical processes, works of authorship and
         technical data comprising the same;

                  (g) all right, title and interest of Old Kofile in, to and
         under all patents, patent applications, trademarks, service marks,
         technology, licenses, trade names, copyrights and other intellectual
         property or proprietary property rights owned or used by Old Kofile,
         the goodwill associated therewith and the rights and privileges used in
         the conduct of the Kofile Business and the right to recover for past,
         present and future infringement thereon;

                  (h) all right, title and interest of Old Kofile in computer
         equipment and hardware, including, without limitation, all central
         processing units, terminals, disk drives, tape drives, electronic
         memory units, printers, keyboards, screens, peripherals (and other
         input/output devices), modems and other communication controllers,
         networking equipment, and any and all parts and appurtenances thereto,
         together with all proprietary and third-party software and intellectual
         property licensed by Old Kofile with such computer equipment and
         hardware;

                  (i) all of the furniture, fixtures, equipment, vehicles,
         machinery, tools, appliances, telephone systems, copy machines, fax
         machines, implements, spare parts, supplies and all other tangible
         personal property of every kind and description owned by Old Kofile or
         Old Kofile's leasehold interests therein;

                  (j) all right, title and interest of Old Kofile in, to and
         under all Permits owned or possessed by Old Kofile and relating to the
         Kofile Business or all or any of the Kofile Assets;

                  (k) all right, title and interest of Old Kofile in, to and
         under the outstanding share capital of Kofile GmbH;

                  (l) all accounts held with financial institutions in the name
         of Old Kofile (the "Kofile Bank Accounts"), subject to the limitation
         on the amount of cash and cash equivalents transferred to New Kofile
         pursuant to Section 2.1(a).

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                  (m) copies of Old Kofile's books, records, papers and
         instruments of whatever nature and wherever located (including, without
         limitation, all employee and personnel records) that relate to the
         Kofile Business or the Kofile Assets or which are required or necessary
         in order for New Kofile to conduct the Kofile Business from and after
         the Closing in the manner in which it is being conducted before the
         Closing;

                  (n) all insurance proceeds and insurance claims of Old Kofile
         relating to the Kofile Business or all or any part of the Kofile
         Assets, and to the extent transferable, the benefit of and the right to
         enforce the covenants and warranties, if any, that Old Kofile is
         entitled to enforce with respect to the Kofile Assets against its
         predecessors in title to the Kofile Assets, if any;

                  (o) all right, title and interest of Old Kofile in, to and
         under all rights, privileges, claims, causes of action and options
         relating to or pertaining to the Kofile Business or the foregoing
         Kofile Assets;

                  (p) all right, title and interest of Old Kofile in and to all
         prepaid expenses, advances and deposits relating to any of the Kofile
         Assets or the Kofile Business;

                  (q) the name "Kofile";

                  (r) all right, title and interest of Old Kofile or any Seller
         in and to the goodwill and going concern value related to the Kofile
         Business, including, but not limited to, telephone numbers, and any
         other intangible assets; and

                  (s) all other or additional privileges, rights, interest,
         properties and assets of Old Kofile of every kind and description and
         wherever located that are used or intended for use in connection with,
         or that are necessary to the continued conduct of, the Kofile Business
         as presently being conducted.

         2.2. EXCLUDED KOFILE ASSETS. Old Kofile shall retain, and the Kofile
Assets shall not include the following assets and other rights of Old Kofile
(collectively, the "Excluded Kofile Assets"):

                  (a) cash and cash equivalents of Old Kofile in excess of the
         Transferred Kofile Cash;

                  (b) intercompany receivables of Old Kofile;

                  (c) the Excluded Kofile Contracts;

                  (d) any software or intellectual property owned by or licensed
         to Tyler or any of its Affiliates, other than Old Kofile; and

                  (e) any refunds or receivables due to Old Kofile from any
         Governmental Authority relating to Taxes previously paid by Old Kofile.

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         2.3. ASSIGNMENT AND ASSUMPTION OF CONTRACTS. At Closing, and subject to
the further terms and conditions of this Agreement, Old Kofile will assign all
of its right, title and interest in and to, and New Kofile will assume, perform
and discharge all of Old Kofile's remaining obligations under, all existing
contracts and agreements, written and verbal to which Old Kofile is a party
(collectively, the "Assumed Kofile Contracts"). Notwithstanding the foregoing,
the Assumed Kofile Contracts do not include, and nothing in this Agreement will
be deemed to constitute an assignment or attempted assignment of, any contract,
agreement or license to which Old Kofile is a party if the attempted assignment
without the consent of the other party thereto would constitute a breach or
affect in any way the rights of Old Kofile thereunder and for which consent has
not been obtained (collectively, the "Excluded Kofile Contracts"). If the
consent of any such other party is not obtained on or prior to the Closing Date,
or an attempted assignment on the Closing Date would be ineffective and would
affect the rights of Old Kofile, or New Kofile as assignee, thereunder, Old
Kofile will cooperate with New Kofile in a reasonable arrangement designed to
provide for New Kofile the economic benefits, to the extent of New Kofile's
performance of Old Kofile's obligations, under each Excluded Kofile Contract and
will continue pursuant to Section 8.5 to cooperate and use its reasonable best
efforts to obtain such assignment.

         2.4. ASSUMED LIABILITIES. As further consideration for the purchase of
the Kofile Assets, New Kofile shall assume and discharge all liabilities,
obligations or contingencies of Old Kofile, except the Excluded Kofile
Liabilities.

         2.5. LIABILITIES NOT ASSUMED. New Kofile shall not assume or become
liable or otherwise obligated to pay, perform or discharge any of the following
debts, liabilities or obligations of Old Kofile (the "Excluded Kofile
Liabilities"):

                  (a) any debt, liability or obligation of Old Kofile resulting
         from, arising out of or relating to any debt, liability or obligation
         to or of Tyler or any Affiliate of Tyler other than Old Kofile,
         including, without limitation, any guaranty of Old Kofile therefor;

                  (b) any debt, liability or obligation of Old Kofile resulting
         from, arising out of or relating to any employee benefit plan or
         employee plan of any kind or nature maintained, operated or
         administered by Tyler or Affiliate of Tyler other than Old Kofile;

                  (c) any debt, liability or obligation of Old Kofile resulting
         from, arising as a result of or relating to the termination of any
         employee of Old Kofile prior to the Closing;

                  (d) any liabilities or obligations arising under any Excluded
         Kofile Contracts; and

                  (e) liabilities or obligations arising on or before the
         Closing Date for income, sales, use, franchise, excise or transfer
         Taxes or duties, or other property or ad valorem Taxes or duties, based
         upon the value of the Kofile Assets, including, without limitation, any
         Taxes that accrue or become payable by Old Kofile as a result of the
         sale of the Kofile Assets to New Kofile, and liabilities or obligations
         arising at any time for income, sales, use, franchise, excise or
         transfer Taxes or duties, or other property or ad valorem Taxes or
         duties, based upon the income or operations of Old Kofile.

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                                   ARTICLE III
                              THE SPECTRUM PURCHASE

         3.1. ACQUISITION OF THE SPECTRUM ASSETS. Upon the terms and subject to
the conditions of this Agreement, at the Closing, Old Spectrum agrees to sell,
convey, transfer, assign and deliver to New Spectrum, and New Spectrum agrees to
purchase from Old Spectrum, on an "AS IS, WHERE IS" basis, all of its assets,
properties, businesses, franchises, goodwill and rights of every kind and
character, tangible or intangible, real or personal, whether owned or leased,
other than the Excluded Spectrum Assets, free and clear of all Encumbrances
other than Permitted Encumbrances and any created by New Spectrum (collectively,
the "Spectrum Assets"). Without limiting the generality of the foregoing, the
Spectrum Assets shall consist of all such assets of Old Spectrum as of the
Closing, including, without limitation, the following:

                  (a) cash and cash equivalents as of the close of business on
         the Closing Date up to an aggregate amount, when taken together with
         the Transferred Kofile Cash, of $200,000 (the "Transferred Spectrum
         Cash").

                  (b) all accounts and notes receivable of Old Spectrum, except
         for intercompany receivables;

                  (c) all inventory, work-in-progress and spare parts of Old
         Spectrum;

                  (d) all customer lists, sales records, credit data and other
         information relating to customers of Old Spectrum;

                  (e) all right, title and interest of Old Spectrum in, to and
         under the Assumed Spectrum Contracts, as provided in Section 3.3;

                  (f) all right, title and interest of Old Spectrum in, to and
         under all source codes, object codes, design documentation and
         procedures for product generation and testing of the computer software
         related to the Business, including the trade secrets, know-how,
         inventions, designs, technical processes, works of authorship and
         technical data comprising the same;

                  (g) all right, title and interest of Old Spectrum in, to and
         under all patents, patent applications, trademarks, service marks,
         technology, licenses, trade names, copyrights and other intellectual
         property or proprietary property rights owned or used by Old Spectrum,
         the goodwill associated therewith and the rights and privileges used in
         the conduct of the Spectrum Business and the right to recover for past,
         present and future infringement thereon;

                  (h) all right, title and interest of Old Spectrum in computer
         equipment and hardware, including, without limitation, all central
         processing units, terminals, disk drives, tape drives, electronic
         memory units, printers, keyboards, screens, peripherals (and other
         input/output devices), modems and other communication controllers,
         networking equipment, and any and all parts and appurtenances thereto,
         together with all proprietary and third-party software and intellectual
         property licensed by Old Spectrum with such computer equipment and
         hardware;

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                  (i) all of the furniture, fixtures, equipment, vehicles,
         machinery, tools, appliances, telephone systems, copy machines, fax
         machines, implements, spare parts, supplies and all other tangible
         personal property of every kind and description owned by Old Spectrum
         or Old Spectrum's leasehold interests therein;

                  (j) all right, title and interest of Old Spectrum in, to and
         under all Permits owned or possessed by Old Spectrum and relating to
         the Spectrum Business or all or any of the Spectrum Assets;

                  (k) all accounts held with financial institutions in the name
         of Old Spectrum (the "Spectrum Bank Accounts"), subject to the
         limitation on the amount of cash and cash equivalents transferred to
         New Spectrum pursuant to Section 3.1(a).

                  (l) copies of Old Spectrum's books, records, papers and
         instruments of whatever nature and wherever located (including, without
         limitation, all employee and personnel records) that relate to the
         Spectrum Business or the Spectrum Assets or which are required or
         necessary in order for New Spectrum to conduct the Spectrum Business
         from and after the Closing in the manner in which it is being conducted
         before the Closing;

                  (m) all insurance proceeds and insurance claims of Old
         Spectrum relating to the Spectrum Business or all or any part of the
         Spectrum Assets, and to the extent transferable, the benefit of and the
         right to enforce the covenants and warranties, if any, that Old
         Spectrum is entitled to enforce with respect to the Spectrum Assets
         against its predecessors in title to the Spectrum Assets, if any;

                  (n) all right, title and interest of Old Spectrum in, to and
         under all rights, privileges, claims, causes of action and options
         relating to or pertaining to the Spectrum Business or the foregoing
         Spectrum Assets;

                  (o) all right, title and interest of Old Spectrum in and to
         all prepaid expenses, advances and deposits relating to any of the
         Spectrum Assets or the Spectrum Business;

                  (p) the name "Spectrum Data";

                  (q) all right, title and interest of Old Spectrum or any
         Seller in and to the goodwill and going concern value related to the
         Spectrum Business, including, but not limited to, telephone numbers,
         and any other intangible assets; and

                  (r) all other or additional privileges, rights, interest,
         properties and assets of Old Spectrum of every kind and description and
         wherever located that are used or intended for use in connection with,
         or that are necessary to the continued conduct of, the Spectrum
         Business as presently being conducted.

         3.2. EXCLUDED SPECTRUM ASSETS. Old Spectrum shall retain, and the
Spectrum Assets shall not include the following assets and other rights of Old
Spectrum (collectively, the "Excluded Spectrum Assets"):

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                  (a) cash and cash equivalents of Old Spectrum in excess of the
         Transferred Spectrum Cash;

                  (b) intercompany receivables of Old Spectrum;

                  (c) the Excluded Spectrum Contracts;

                  (d) any software or intellectual property owned by or licensed
         to Tyler or any of its Affiliates, other than Old Spectrum;

                  (e) any refunds or receivables due to Old Spectrum from any
         Governmental Authority relating to Taxes previously paid by Old
         Spectrum; and

                  (f) the San Antonio Property.

         3.3. ASSIGNMENT AND ASSUMPTION OF CONTRACTS. At Closing, and subject to
the further terms and conditions of this Agreement, Old Spectrum will assign all
of its right, title and interest in and to, and New Spectrum will assume,
perform and discharge all of Old Spectrum's remaining obligations under, all
existing contracts and agreements, written and verbal to which Old Spectrum is a
party (collectively, the "Assumed Spectrum Contracts"). Notwithstanding the
foregoing, the Assumed Spectrum Contracts do not include, and nothing in this
Agreement will be deemed to constitute an assignment or attempted assignment of,
any contract, agreement or license to which Old Spectrum is a party if the
attempted assignment without the consent of the other party thereto would
constitute a breach or affect in any way the rights of Old Spectrum thereunder
for which consent has not been obtained (collectively, the "Excluded Spectrum
Contracts"). If the consent of any such other party is not obtained on or prior
to the Closing Date, or an attempted assignment on the Closing Date would be
ineffective and would affect the rights of Old Spectrum, or New Spectrum as
assignee, thereunder, Old Spectrum will cooperate with New Spectrum in a
reasonable arrangement designed to provide for New Spectrum the economic
benefits, to the extent of New Spectrum's performance of Old Spectrum's
obligations, under each Excluded Spectrum Contract and will continue pursuant to
Section 8.5 to cooperate and use its reasonable best efforts to obtain such
assignment.

         3.4. ASSUMED LIABILITIES. As further consideration for the purchase of
the Spectrum Assets, New Spectrum shall assume and discharge all liabilities,
obligations or contingencies of Old Spectrum, except the Excluded Spectrum
Liabilities.

         3.5. LIABILITIES NOT ASSUMED. New Spectrum shall not assume or become
liable or otherwise obligated to pay, perform or discharge any of the following
debts, liabilities or obligations of Old Spectrum (the "Excluded Spectrum
Liabilities"):

                  (a) any purchase money indebtedness secured by a mortgage or
         deed of trust on the San Antonio Property, except as expressly provided
         under the terms and conditions of the Real Property Purchase Agreement;

                  (b) any debt, liability or obligation of Old Spectrum
         resulting from, arising out of or relating to any debt, liability or
         obligation to or of Tyler or any Affiliate of Tyler other than Old
         Spectrum, including, without limitation, any guaranty of Old Spectrum
         therefor;

Asset Purchase Agreement
                                       12
<PAGE>   14

                  (c) any debt, liability or obligation of Old Spectrum
         resulting from, arising out of or relating to any employee benefit plan
         or employee plan of any kind or nature maintained, operated or
         administered by Tyler or Affiliate of Tyler other than Old Spectrum;

                  (d) any debt, liability or obligation of Old Spectrum
         resulting from, arising as a result of or relating to the termination
         of any employee of Old Spectrum prior to the Closing;

                  (e) any liabilities or obligations arising under any Excluded
         Spectrum Contracts; and

                  (f) liabilities or obligations arising on or before the
         Closing Date for income, sales, use, franchise, excise or transfer
         Taxes or duties, or other property or ad valorem Taxes or duties, based
         upon the value of the Spectrum Assets, including, without limitation,
         any Taxes that accrue or become payable by Old Spectrum as a result of
         the sale of the Spectrum Assets to New Spectrum, and liabilities or
         obligations arising at any time for income, sales, use, franchise,
         excise or transfer Taxes or duties, or other property or ad valorem
         Taxes or duties, based upon the income or operations of Old Spectrum.

                                   ARTICLE IV
                                 OTHER PURCHASES

         4.1. ACQUISITION OF THE REAL PROPERTY. The sale to Real Property
Purchaser by (a) BRC of the Mockingbird Property and (b) Old Spectrum of the San
Antonio Property is upon the terms and subject to the conditions of that certain
Purchase and Sale Agreement dated as of the date hereof by and among BRC, Old
Spectrum and Real Property Purchaser in the form attached to this Agreement as
Exhibit A (the "Real Property Purchase Agreement").

         4.2. ACQUISITION OF THE INTANGIBLES. Upon the terms and subject to the
conditions of this Agreement, at the Closing, Tyler agrees to sell, convey,
transfer, assign and deliver to ei Solutions, and ei Solutions agrees to
purchase from Tyler, on an "AS IS, WHERE IS" basis, free and clear of all
Encumbrances other than any created by ei Solutions, the following
(collectively, the "Intangibles"):

                  (a) all right, title and interest of Tyler in, to and under
         any work product or other intangible assets created or acquired by
         Tyler or its employees in connection with, arising from or related to
         Tyler's investment in its proposed acquisition of the business and
         assets of Eastman Software, Inc., and certain other Affiliates of Kodak
         (the "ESI Acquisition"); and

                  (b) all right, title and interest of Tyler in, to and under
         that certain nonrefundable deposit in the amount of $100,000 paid by
         Tyler to Kodak on July 26, 2000, in connection with the ESI
         Acquisition.

Asset Purchase Agreement
                                       13
<PAGE>   15

                                    ARTICLE V
                             PURCHASE PRICE; CLOSING

         5.1. PURCHASE PRICE. The aggregate purchase price for the Asset
Purchases other than the Real Property Purchases shall be an amount equal to
$8,200,000 (the "Purchase Price").

         5.2. PAYMENT OF PURCHASE PRICE. At the Closing, New Kofile, New
Spectrum and ei Solutions shall pay the Purchase Price to Old Kofile, Old
Spectrum and Tyler, or their designees, by wire transfer of immediately
available funds, as set forth in Schedule 5.2.

         5.3. CLOSING. The consummation of the Asset Purchases and the other
transactions described in this Agreement (the "Closing") shall take place at
10:00 a.m. Dallas, Texas time at the offices of Gardere & Wynne, L.L.P., 1601
Elm Street, Dallas, Texas, on September 29, 2000, or at such other time and date
as Sellers and Purchasers may mutually agree, which date shall be referred to as
the "Closing Date."

         5.4. EFFECTIVE TIME. The effective time of the Kofile Purchase, the
Spectrum Purchase and the Real Property Purchases shall be at 12:01 a.m. local
time on October 1, 2000, unless Sellers and Purchasers shall otherwise mutually
agree in writing. The effective time of the Intangibles Purchase shall be as of
12:01 a.m. Dallas, Texas time on August 10, 2000.

         5.5. TRANSFER OF CASH AND CASH EQUIVALENTS.

                  (a) Following the Closing, Sellers shall cooperate with New
         Kofile and New Spectrum, as may be requested thereby, (i) to transfer
         to New Kofile all cash and cash equivalents of Old Kofile that are on
         hand as of the Closing and (ii) to transfer to New Spectrum all cash
         and cash equivalents of Old Spectrum that are on hand as of the
         Closing. Cash and cash equivalents of Kofile GmbH that are on hand as
         of the Closing shall remain in the existing accounts of Kofile GmbH
         with financial institutions (the "Kofile GmbH Bank Accounts") or
         otherwise on hand. Cash and cash equivalents on hand as of the Closing
         includes (w) amounts reported by the financial institutions holding the
         Kofile Bank Accounts, the Spectrum Bank Accounts or the Kofile GmbH
         Bank Accounts, as the case may be, plus (x) deposits in transit as of
         the Closing to the Kofile Bank Accounts, the Spectrum Bank Accounts or
         the Kofile GmbH Bank Accounts, as the case may be, less (y) checks
         issued on the Kofile Bank Accounts, the Spectrum Bank Accounts or the
         Kofile GmbH Bank Accounts, as the case may be, on or before the Closing
         but not yet honored by the financial institutions holding such
         accounts, which will be honored post-Closing by New Kofile, New
         Spectrum or Kofile GmbH, respectively, plus (z) cash on hand that is
         held as petty cash or otherwise (for either New Kofile, New Spectrum or
         Kofile GmbH, the "Closing Cash Balance").

                  (b) Following the Closing, Tyler, Old Kofile and Old Spectrum
         shall promptly forward and transfer to New Kofile or New Spectrum, as
         the case may be, any amounts received by Tyler, Old Kofile or Old
         Spectrum after the Closing Date with respect to an account receivable
         of Old Kofile or Old Spectrum.

         5.6. POST-CLOSING ADJUSTMENT TO PURCHASE PRICE. Within 45 days after
the Closing Date, the Purchase Price will be adjusted upward or downward in cash
in an amount equal to the sum of the Net Asset Value Adjustment and the Net Cash
Adjustment (the "Post-Closing Adjustment"). If the Post-Closing

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                                       14
<PAGE>   16

Adjustment is a positive number, then the Purchase Price shall be adjusted
upward and Purchasers shall promptly pay such amount to Sellers or their
designees by wire transfer of immediately available funds pursuant to written
instructions received from Sellers. If the Post-Closing Adjustment is a negative
number, the Purchase Price shall be adjusted downward and Sellers shall promptly
pay such amount (expressed as a positive number) to Purchasers or their
designees by wire transfer of immediately available funds pursuant to written
instructions received from Purchasers.

                  (a) The calculation of the Net Asset Value Adjustment shall be
         set forth on Supplemental Schedule 5.6, which shall be agreed upon by
         Sellers and Purchasers and attached to this Agreement within 45 days
         after the Closing.

                     (i)    The "Net Asset Value Adjustment" means the sum of
                            the Kofile Net Asset Value Adjustment and the
                            Spectrum Net Asset Value Adjustment.

                     (ii)   The "Kofile Net Asset Value Adjustment" means the
                            Closing Kofile Net Asset Value less the Agreed
                            Kofile Net Asset Value.

                     (iii)  The "Agreed Kofile Net Asset Value," which is set
                            forth on Schedule 5.6, means the net historical
                            carrying value of certain assets to be acquired less
                            certain liabilities assumed, as listed on Schedule
                            5.6 (the "Listed Assets and Liabilities"), of the
                            Kofile Business (including Kofile GmbH) as of June
                            30, 2000, as determined on a basis consistent with
                            Sellers' past practice in preparing internal
                            financial statements and in accordance with GAAP and
                            this Section 5.6(a).

                     (iv)   The "Closing Kofile Net Asset Value" means the net
                            historical carrying value of the Listed Assets and
                            Liabilities of the Kofile Business (including Kofile
                            GmbH). The Closing Kofile Net Asset Value shall be
                            determined by Sellers and Purchasers as of the
                            Closing Date and will be determined on a basis
                            consistent with Sellers' past practice in preparing
                            internal financial statements and in accordance with
                            GAAP and this Section 5.6(a). The Closing Kofile Net
                            Asset Value shall be set forth on Supplemental
                            Schedule 5.6.

                     (v)    The "Spectrum Net Asset Value Adjustment" means the
                            Closing Spectrum Net Asset Value less the Agreed
                            Spectrum Net Asset Value.

                     (vi)   The "Agreed Spectrum Net Asset Value," which is set
                            forth on Schedule 5.6, means the net historical
                            carrying value of the Listed Assets and Liabilities
                            of the Spectrum Business as of June 30, 2000, as
                            determined on a basis consistent with Sellers' past
                            practice in preparing internal financial statements
                            and in accordance with GAAP and this Section 5.6(a).

                     (vii)  The "Closing Spectrum Net Asset Value" means the net
                            historical carrying value of the Listed Assets and
                            Liabilities of the Spectrum Business. The Closing
                            Spectrum Net Asset Value shall be determined by
                            Sellers and

Asset Purchase Agreement
                                       15
<PAGE>   17

                            Purchasers as of the Closing Date and will be
                            determined on a basis consistent with Sellers' past
                            practice in preparing internal financial statements
                            and in accordance with GAAP and this Section 5.6(a).
                            The Closing Spectrum Net Asset Value shall be set
                            forth on Supplemental Schedule 5.6.

                     (viii) For purposes of this Section 5.6(a), the financial
                            statements for Old Kofile (including Kofile GmbH)
                            and Old Spectrum will present an aggregate balance
                            of $200,000 for cash and cash equivalents and zero
                            balances for goodwill and related intangibles,
                            current and deferred federal and state income taxes,
                            certain accrued taxes, intercompany balances and any
                            other Excluded Kofile Liabilities and Excluded
                            Spectrum Liabilities.

                  (b) The calculation of the Net Cash Adjustment shall be set
         forth on Supplemental Schedule 5.6, which shall be agreed upon by
         Sellers and Purchasers and attached to this Agreement within 45 days
         after the Closing. The "Net Cash Adjustment" means (i) the sum of (A)
         the Closing Cash Balance for New Kofile, (B) the Closing Cash Balance
         for New Spectrum and (C) the Closing Cash Balance for Kofile GmbH, less
         (ii) $200,000.

         5.7. ALLOCATION OF PURCHASE PRICE. Within 90 days of the Closing Date,
the parties shall agree upon the allocation of the Purchase Price among the
Kofile Assets, the Spectrum Assets, and the Intangibles. Such allocation shall
be set forth in Schedule 5.7 and attached to this Agreement. Such allocation
will be used by the parties for all Tax purposes and filings, including, without
limitation, IRS Form 8594.

                                   ARTICLE VI
                    REPRESENTATIONS AND WARRANTIES OF SELLERS

         Each Seller represents and warrants, jointly and severally, to
Purchasers, as of the date of this Agreement and as of the Closing Date, the
following:

         6.1. DUE ORGANIZATION AND QUALIFICATION. Tyler is a corporation duly
organized, validly existing and in good standing under the Laws of the State of
Delaware. Each of Old Kofile and Old Spectrum is a corporation duly organized,
validly existing and in good standing under the Laws of the State of Texas. Each
Seller is duly authorized and qualified to do business under all applicable Laws
and to carry on its business in the places and in the manner as now conducted.
Each Seller has the requisite power and authority to own, lease and operate its
assets and properties and to carry on its business as such business is currently
being conducted.

         6.2.  AUTHORIZATION; NON-CONTRAVENTION; APPROVALS.

                  (a) Each Seller has the requisite power and authority to enter
         into this Agreement and to effect the transactions described herein.
         The execution, delivery and performance of this Agreement have been
         approved by the board of directors of each Seller and, with respect to
         Old Kofile and Old Spectrum, by BRC as each such Seller's sole
         shareholder. No additional corporate proceedings on the part of any
         Seller are necessary to authorize the execution and delivery of this
         Agreement and

Asset Purchase Agreement
                                       16
<PAGE>   18

         the consummation by any Seller of the transactions described herein.
         This Agreement has been duly and validly executed and delivered by each
         Seller, and, assuming the due authorization, execution and delivery
         hereof by each Purchaser, constitutes a valid and binding agreement of
         each Seller, enforceable against each Seller in accordance with its
         terms, subject to (i) bankruptcy, insolvency, reorganization,
         moratorium or other similar laws affecting or relating to the
         enforcement of creditors' rights generally and (ii) general equitable
         principles.

                  (b) The execution and delivery of this Agreement by each
         Seller do not, and the consummation by each Seller of the transactions
         described herein will not, violate or result in a breach of any
         provision of, or constitute a default (or an event which, with notice
         or lapse of time or both, would constitute a default) under, or result
         in the termination of, or accelerate the performance required by, or
         result in a right of termination or acceleration under, or result in
         the creation of any Encumbrances upon any of the properties or assets
         of such Seller under any of the terms, conditions or provisions of, (i)
         the Articles or Certificate of Incorporation or Bylaws of such Seller,
         (ii) any Laws applicable to such Seller or any of its properties or
         assets or (iii) any contract, agreement, lease, mortgage, deed of
         trust, commitment, license, franchise, Permit, authorization or any
         other instrument or obligation to which such Seller is a party or to
         which any of the Assets are bound.

         6.3. TITLE TO ASSETS.

                  (a) Old Kofile has good, indefeasible and marketable title to
         the Kofile Assets, free and clear of all Encumbrances, other than (i)
         the Permitted Encumbrances, or (ii) Encumbrances which will be released
         or discharged at or prior to the Closing Date.

                  (b) Old Spectrum has good, indefeasible and marketable title
         to the Spectrum Assets, free and clear of all Encumbrances, other than
         (i) the Permitted Encumbrances, or (ii) Encumbrances which will be
         released or discharged at or prior to the Closing Date.

                  (c) Tyler has good, indefeasible and marketable title to the
         Intangibles, free and clear of all Encumbrances, other than (i) the
         Permitted Encumbrances, or (ii) Encumbrances which will be released or
         discharged at or prior to the Closing Date.

         6.4. TAXES. Consummation of the transactions described in this
Agreement will not result in the imposition or creation of any Tax obligation on
the Assets, except for (a) Tax obligations that remain the liability of the
respective Sellers under Sections 2.4 and 3.4 hereof or (b) Tax obligations
resulting from any Tax election made by Purchasers after the Closing Date.

         6.5. BROKERS AND FINDERS. Sellers have not engaged any broker, advisor
or finder as to which any Purchaser would have any liability whatsoever for any
brokerage fees, commission or finder's fees in connection with the transactions
described herein.

         6.6. NO IMPLIED REPRESENTATIONS. NOTWITHSTANDING ANYTHING TO THE
CONTRARY CONTAINED IN THIS AGREEMENT, IT IS THE EXPRESS UNDERSTANDING OF
PURCHASERS THAT SELLERS ARE NOT MAKING ANY REPRESENTATION OR WARRANTY
WHATSOEVER, EXPRESS OR IMPLIED, OTHER THAN THOSE REPRESENTATIONS AND WARRANTIES
OF

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                                       17
<PAGE>   19

SELLERS EXPRESSLY SET FORTH IN THIS AGREEMENT, INCLUDING, WITHOUT LIMITATION,
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

                                   ARTICLE VII
                  REPRESENTATIONS AND WARRANTIES OF PURCHASERS

         Each Purchaser represents and warrants, severally and not jointly, to
Sellers, as of the date of this Agreement and as of the Closing Date, to the
extent in respect to such Purchaser:

         7.1. DUE ORGANIZATION AND QUALIFICATION. Each of ei Solutions and New
Kofile is a corporation duly organized, validly existing and in good standing
under the Laws of the State of Delaware. New Spectrum is a corporation duly
organized, validly existing and in good standing under the Laws of the State of
Texas. Each Purchaser is duly authorized and qualified, or will be duly
authorized and qualified within 10 days after the Closing Date, to do business
under all applicable Laws and to carry on its business in the places and in the
manner as now conducted. Each Purchaser has the requisite power and authority to
own, lease and operate its assets and properties and to carry on its business as
such business is currently being conducted.

         7.2. AUTHORIZATION; NON-CONTRAVENTION; APPROVALS.

                  (a) Each Purchaser has the full legal right, power and
         authority to enter into this Agreement and to consummate the
         transactions described herein. The execution, delivery and performance
         of this Agreement has been approved by the board of directors of each
         Purchaser. No additional corporate proceedings on the part of any
         Purchaser are necessary to authorize the execution and delivery of this
         Agreement and the consummation by any Purchaser of the transactions
         described herein. This Agreement has been duly and validly executed and
         delivered by each Purchaser, and, assuming the due authorization,
         execution and delivery by each Seller, constitutes valid and binding
         agreements of each Purchaser, enforceable against each Purchaser in
         accordance with its terms, subject to (i) bankruptcy, insolvency,
         reorganization, moratorium or other similar laws affecting or relating
         to the enforcement of creditors' rights generally and (ii) general
         equitable principles.

                  (b) The execution and delivery of this Agreement by each
         Purchaser do not, and the consummation by each Purchaser of the
         transactions described herein will not, violate or result in a breach
         of any provision of, or constitute a default (or an event which, with
         notice or lapse of time or both, would constitute a default) under, or
         result in the termination of, or accelerate the performance required
         by, or result in a right of termination or acceleration under any of
         the terms, conditions or provisions of (i) the Certificate or Articles
         of Incorporation or Bylaws of such Purchaser, (ii) any Law applicable
         to such Purchaser or any of its properties or assets or (iii) any
         contract, agreement, lease, mortgage, deed of trust, commitment,
         license, franchise, Permit, authorization or any other instrument or
         obligation to which such Purchaser is a party.

Asset Purchase Agreement
                                       18
<PAGE>   20

         7.3. BROKERS AND FINDERS. Purchasers have not engaged any broker,
advisor or finder as to which any Seller would have any liability whatsoever for
any brokerage fees, commission or finder's fees in connection with the
transactions described herein.

         7.4. NO IMPLIED REPRESENTATIONS. NOTWITHSTANDING ANYTHING TO THE
CONTRARY CONTAINED IN THIS AGREEMENT, IT IS THE EXPRESS UNDERSTANDING OF SELLERS
THAT PURCHASERS ARE NOT MAKING ANY REPRESENTATION OR WARRANTY WHATSOEVER,
EXPRESS OR IMPLIED, OTHER THAN THOSE REPRESENTATIONS AND WARRANTIES OF
PURCHASERS EXPRESSLY SET FORTH IN THIS AGREEMENT.

                                  ARTICLE VIII
                                CERTAIN COVENANTS

         8.1. CONDUCT OF BUSINESS. Pending the Closing, (a) Old Kofile and Old
Spectrum will each conduct its respective Business in the normal and usual
manner consistent with the continued operation thereof and (b) without the prior
approval of Purchasers (which approval will not be unreasonably withheld or
delayed), neither Old Kofile nor Old Spectrum will make any material change in
the policies affecting the operation and conduct of its respective Business.
Each of Old Kofile and Old Spectrum shall pay or otherwise satisfy in the
ordinary course of business its respective trade payables between the date of
this Agreement and the Closing Date.

         8.2. FUTURE COOPERATION; TAX MATTERS. Sellers and Purchasers shall each
deliver or cause to be delivered to the other following the Closing such
additional instruments as the other may reasonably request for the purpose of
fully carrying out this Agreement. Sellers will cooperate and use its
commercially reasonable best efforts to have the present officers, directors and
employees of Sellers cooperate with Purchasers at and after the Closing in
furnishing information, evidence, testimony and other assistance in connection
with any actions, proceedings, arrangements or disputes of any nature with
respect to matters pertaining to all periods prior to the Closing. Following the
Closing, Sellers shall give to Purchasers free and unrestricted access to (and
the right to make copies at the expense of Purchasers) the books, files, records
and Tax returns and supporting schedules and work papers of Sellers to the
extent that such relate to the Businesses, the Kofile Assets, the Spectrum
Assets or to the operations, income, expenses and assets of Old Kofile or Old
Spectrum existing on, accruing or arising prior to or occurring prior to the
Closing Date; provided, however, that any access pursuant to this Section 8.2
shall be conducted in such a manner as not to interfere unreasonably with the
operations of the business of the Sellers following the Closing Date. Purchasers
will provide Sellers with access to such of their books and records as may be
reasonably requested by Purchasers in connection with federal, state and local
Tax matters relating to periods prior to the Closing. The party requesting
cooperation, information or actions under this Section 8.2 shall reimburse the
other party for all reasonable out-of-pocket costs and expenses paid or incurred
in connection therewith, which costs and expenses shall not, however, include
per diem charges for employees or allocations of overhead charges.

         8.3. TAX STATUS AND EFFECT. It is understood and agreed that neither
Sellers nor Purchasers have made any representations to the other as to the Tax
status or Tax effect of the transactions described in this Agreement, and each
of the parties is therefore separately taking advice and counsel as to such
matters, and

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                                       19
<PAGE>   21

each is assuming, subject only to the express and specific provisions of this
Agreement, the Tax, if any, which may be incurred by reason of the carrying out
of the terms and provisions hereof.

         8.4. EXPENSES. Each party to this Agreement will pay the fees, expenses
and disbursements of such party and its agents, representatives, accountants and
counsel incurred in connection with the execution, delivery and performance of
this Agreement and the consummation of the transactions described herein.

         8.5. CONSENTS TO ASSIGNMENT. Tyler, Old Kofile and Old Spectrum,
respectively, will use reasonable business efforts to cooperate with New Kofile
and New Spectrum in securing all necessary consents of third parties to the
assignment, respectively, of the Assumed Kofile Contracts and the Assumed
Spectrum Contracts.

         8.6. SUBCONTRACTS. Following Closing, Old Kofile and Old Spectrum,
respectively, will subcontract or sublicense to New Kofile and New Spectrum, in
the form attached to this Agreement as Exhibit B, dated as of the Closing Date
the Excluded Kofile Contracts and the Excluded Spectrum Contracts.

         8.7. NAME CHANGE; CORPORATE EXISTENCE. Not later than the next business
day after the Closing, each of Old Kofile and Old Spectrum shall cause Articles
of Amendment to its Articles of Incorporation to be filed with the Secretary of
State of the State of Texas to change its name to "Tyler K, Inc." and "Tyler SD,
Inc.," respectively. Tyler agrees to maintain the corporate existence of Old
Kofile and Old Spectrum as long as there are any Excluded Contracts.

         8.8. BULK SALES. To the extent, if any, that the same are applicable to
the Asset Purchases, the parties hereby waive compliance with Article 6 of the
Uniform Commercial Code as adopted in each jurisdiction in which any of the
Assets are located, as well as Section 1141(c) of the New York Tax Law and any
similar Laws in other jurisdictions.

         8.9. RELATED TRANSACTIONS. The parties acknowledge and agree that
following related transactions are intended to be consummated contemporaneously
with the Asset Purchases on the Closing Date to be effective as set forth in
Section 5.4:

                  (a) the execution and delivery by BRC, Old Spectrum and Real
         Property Purchaser of the Real Property Purchase Agreement.

                  (b) the execution and delivery by Real Property Purchaser as
         landlord and Government Records Services, Inc., a Texas corporation,
         wholly owned subsidiary of BRC and indirect wholly owned subsidiary of
         Tyler, as tenant, and Tyler as guarantor, of a lease agreement with
         respect to the Mockingbird Property in the form attached to this
         Agreement as Exhibit C.

                  (c) the execution and delivery by Tyler, BRC as employer and
         Oates as employee of an amendment, in the form attached to this
         Agreement as Exhibit D, to that certain Employment and Noncompetition
         Agreement dated as of October 8, 1997, by and between Tyler, BRC and
         Oates.

         8.10. PAYMENT OF LIABILITIES. Each of Old Kofile and Old Spectrum shall
fully pay or otherwise satisfy all other claims or liabilities relating to its
respective Assets or Business incurred through the Closing Date other than the
Assumed Liabilities.

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                                       20
<PAGE>   22

         8.11. TRANSITION SERVICES. For a period of up to one year after the
Closing, Tyler agrees that Tyler and/or BRC will provide to New Kofile and New
Spectrum such transition services as may be reasonably requested by New Kofile
or New Spectrum, including, without limitation, human resources, payroll,
accounting, data processing and other administrative services, provided that
such services are reasonably comparable to the services provided to Old Kofile
and Old Spectrum, respectively, prior to the Closing. Tyler or BRC, as the case
may be, shall bill, not more than once per month, the respective Purchaser for
its actual costs of providing such services, and New Kofile and New Spectrum
agree to promptly pay Tyler or BRC for such services as billed; provided,
however, that with respect to any disbursements of payroll or payroll taxes by
Tyler or BRC on behalf of New Kofile or New Spectrum, New Kofile or New
Spectrum, as the case may be, shall, prior to or concurrently with any such
disbursement, transfer to Tyler or BRC, as the case may be, immediately
available funds in an amount equal to any such disbursement.

                                   ARTICLE IX
                                 INDEMNIFICATION

         Tyler, Old Kofile, Old Spectrum, ei Solutions, New Kofile and New
Spectrum each make the following covenants:

         9.1. INDEMNIFICATION BY OLD KOFILE AND OLD SPECTRUM. Subject to
Sections 9.5 and 9.6, Sellers covenant and agree that they will, jointly and
severally, indemnify, defend, protect and hold harmless Purchasers and their
respective officers, directors, employees, stockholders, agents, representatives
and Affiliates, at all times from and after the date of this Agreement from and
against all Losses incurred by any of such indemnified persons as a result of or
arising from (a) until the Expiration Date, any breach of the representations
and warranties of any Seller set forth herein or in the Schedules or
certificates delivered in connection herewith, (b) any breach or nonfulfillment
of any covenant or agreement on the part of any Seller under this Agreement, (c)
the Excluded Kofile Liabilities or (d) the Excluded Spectrum Liabilities.

         9.2. INDEMNIFICATION BY NEW KOFILE AND NEW SPECTRUM. Subject to
Sections 9.5 and 9.6, each Purchaser covenants and agrees that it will,
severally and not jointly, indemnify, defend, protect and hold harmless Sellers
and their respective officers, directors, employees, stockholders, agents,
representatives and Affiliates, at all times from and after the date of this
Agreement from and against all Losses incurred by any of such indemnified
persons as a result of or arising from (a) until the Expiration Date, any breach
of the representations and warranties of such Purchaser set forth herein or in
the Schedules or certificates attached hereto, (b) any breach or nonfulfillment
of any covenant or agreement on the part of such Purchaser under this Agreement,
(c) any Assumed Kofile Liabilities or any debt, obligation or liability of New
Kofile arising after the Closing Date with respect to New Kofile's operation of
the Kofile Business (as to Old Kofile) and (d) any Assumed Spectrum Liabilities
or any debt, obligation or liability of New Spectrum arising after the Closing
Date with respect to New Spectrum's operation of the Spectrum Business (as to
Old Spectrum).

         9.3. THIRD PERSON CLAIMS. Promptly after any party hereto (hereinafter
the "Indemnified Party") has received notice of or has knowledge of any claim by
a person not a party to this Agreement ("Third Person"), of the commencement of
any action or proceeding by a Third Person that the Indemnified Party believes
in good faith is an indemnifiable claim under this Agreement, the Indemnified
Party shall give to the party obligated to provide indemnification pursuant to
Section 9.1 or 9.2 hereof (hereinafter the

Asset Purchase Agreement
                                       21
<PAGE>   23

"Indemnifying Party") written notice of such claim or the commencement of such
action or proceeding, provided, however, that failure to give such notice shall
not preclude the Indemnified Party from making any claim thereon if the failure
or delay in giving such notice did not prejudice the Indemnifying Party. Such
notice shall state the nature and the basis of such claim and a reasonable
estimate of the amount thereof. The Indemnifying Party shall have the right to
defend and settle, at its own expense and by its own counsel, any such matter so
long as the Indemnifying Party pursues the same diligently and in good faith. If
the Indemnifying Party undertakes to defend or settle, it shall promptly notify
the Indemnified Party of its intention to do so, and the Indemnified Party shall
cooperate with the Indemnifying Party and its counsel in all commercially
reasonable respects in the defense thereof and in any settlement thereof. Such
cooperation shall include, but shall not be limited to, furnishing the
Indemnifying Party with any books, records and other information reasonably
requested by the Indemnifying Party and in the Indemnified Party's possession or
control. After the Indemnifying Party has notified the Indemnified Party of its
intention to undertake to defend or settle any such asserted liability, and for
so long as the Indemnifying Party diligently pursues such defense, the
Indemnifying Party shall not be liable for any additional legal expenses
incurred by the Indemnified Party in connection with any defense or settlement
of such asserted liability; provided, however, that the Indemnified Party shall
be entitled, at its expense, to participate in the defense of such asserted
liability and the negotiations of the settlement thereof. The Indemnifying Party
shall not settle any such Third Person claim without the consent of the
Indemnified Party, unless the settlement thereof imposes no liability or
obligation on, and includes a complete release from liability of, the
Indemnified Party. If the Indemnifying Party desires to accept a final and
complete settlement of any such Third Person claim and the Indemnified Party
refuses to consent to such settlement, then the Indemnifying Party's liability
under this Section with respect to such Third Person claim shall be limited to
the amount so offered in settlement by said Third Person; provided, however,
that notwithstanding the foregoing, the Indemnified Party shall be entitled to
refuse to consent to any such proposed settlement and the Indemnifying Party's
liability hereunder shall not be limited by the amount of the proposed
settlement if such settlement does not provide for the complete release of the
Indemnified Party. If, upon receiving notice, the Indemnifying Party does not
timely undertake to defend such matter to which the Indemnified Party is
entitled to indemnification hereunder, or fails to pursue such defense in a
reasonably diligent manner, the Indemnified Party may undertake such defense
through counsel of its choice, at the cost and expense of the Indemnifying
Party, and the Indemnified Party may settle such matter, in its discretion, and
the Indemnifying Party shall reimburse the Indemnified Party for the amount paid
in such settlement and any other liabilities or expenses incurred by the
Indemnified Party in connection therewith.

         9.4. NON-THIRD PERSON CLAIMS. In the event that any Indemnified Party
asserts the existence of a claim under ARTICLE IX giving rise to Losses (but
excluding claims resulting from the assertion of liability by Third Persons),
such party shall give written notice to the Indemnifying Party. Such written
notice shall state that it is being given pursuant to this Section 9.4, specify
the nature and amount of the claim asserted, and indicate the date on which such
assertion shall be deemed accepted and the amount of the claim deemed a valid
claim (such date to be established in accordance with the next sentence). If
such Indemnifying Party, within 60 days after the mailing of notice by such
Indemnified Party, shall not give written notice to such Indemnified Party
announcing such Indemnifying Party's intent to contest such assertion of such
Indemnified Party, such assertion shall be deemed accepted and the amount of
such claim shall be deemed a valid claim. In the event, however, that such
Indemnifying Party contests such assertion of a claim by giving such written
notice to the Indemnified Party within said period, then the parties shall
negotiate in good faith in an attempt to resolve such claim. In the event that
litigation shall arise with respect to any such claim, the prevailing party
shall be entitled to reimbursement of costs and expenses incurred in

Asset Purchase Agreement
                                       22
<PAGE>   24

connection with such litigation including reasonable attorneys' fees, if the
parties hereto, acting in good faith, cannot reach agreement with respect to
such claim within 60 days after the notice provided by the Indemnified Party.

         9.5. INDEMNIFICATION DEDUCTIBLE. Neither Sellers nor Purchasers shall
be entitled to indemnification from the other under the provisions of Section
9.1(a) or Section 9.2(a), as the case may be, until such time as, and only to
the extent that, the claims subject to indemnification by such other party
exceed, in the aggregate, $25,000. Notwithstanding the foregoing, the
limitations set forth in this Section 9.5 shall not apply to fraudulent
misrepresentations.

         9.6. INDEMNIFICATION LIMITATION. Subject to Section 9.5, the aggregate
indemnification obligation of Sellers under Section 9.1(a) and of Purchasers
under Section 9.2(a) shall be limited to the Purchase Price. Notwithstanding the
foregoing, the limitations set forth in this Section 9.6 shall not apply to
fraudulent misrepresentations.

                                    ARTICLE X
                              CONDITIONS TO CLOSING

         10.1. CONDITIONS TO OBLIGATIONS OF PURCHASERS. Except as may be waived
by Purchasers, the obligations of Purchasers to consummate the transactions
described herein are subject to satisfaction of the following conditions:

                  (a) The Kofile Assets, the Spectrum Assets and the Intangibles
         shall be free and clear of all Encumbrances, except for Permitted
         Encumbrances.

                  (b) Purchasers shall have received from Sellers the respective
         items, and Sellers shall have taken the actions required of each of
         them, pursuant to ARTICLE XI.

                  (c) All conditions of BRC and Old Spectrum to closing and all
         closing requirements of Real Property Purchaser set forth in the Real
         Property Purchase Agreement shall have been satisfied.

                  (d) Sellers shall have delivered to Purchasers on or before
         the Closing Date certificates of existence and good standing for each
         Seller issued by the appropriate Governmental Authorities of the state
         in which such Seller is incorporated and each certificate shall be
         dated within ten days of the Closing Date.

                  (e) No action, suit or proceeding before any Governmental
         Authority to enjoin the transactions described in this Agreement or its
         consummation will have been instituted on or before the Closing Date.

                  (f) The representations of the Sellers under this Agreement
         and in each agreement, document or instrument delivered pursuant hereto
         or in connection with the transactions described herein on or before
         the Closing Date shall have been true and correct in all material
         respects on and as of the date thereof and shall be true and correct in
         all material respects as of and on the Closing Date, as though made on
         and as of the Closing Date.

Asset Purchase Agreement
                                       23
<PAGE>   25

                  (g) Sellers shall have performed in all material respects the
         covenants, agreements and obligations required to be performed by each
         of them under this Agreement prior to and on the Closing Date.

         10.2. CONDITIONS TO OBLIGATIONS OF SELLERS. Except as may be waived by
Sellers, the obligation of the Sellers to consummate the transactions described
herein is subject to satisfaction of the following conditions:

                  (a) Sellers shall have received from Purchasers the respective
         items, and Purchasers shall have taken the actions required of each of
         them, pursuant to ARTICLE XI.

                  (b) All conditions of Real Property Purchaser to closing and
         all closing requirements of BRC and Old Spectrum set forth in the Real
         Property Purchase Agreement shall have been satisfied.

                  (c) Purchasers shall have delivered to Sellers on or before
         the Closing Date certificates of existence and good standing for each
         Purchaser that is a corporation issued by the appropriate Governmental
         Authorities of the state in which such Seller is incorporated and each
         certificate shall be dated within ten days of the Closing Date.

                  (d) Tyler shall have received all necessary consents or
         approvals from its senior lenders with respect to the transactions
         described herein.

                  (e) The Board of Directors of Tyler shall have received a
         written opinion from Stephens Inc. that the Asset Purchases are fair
         from a financial point of view to the stockholders of Tyler.

                  (f) No action, suit or proceeding before any Governmental
         Authority to enjoin the transactions described in this Agreement or its
         consummation will have been instituted on or before the Closing Date.

                  (g) The representations of the Purchasers under this Agreement
         and in each agreement, document or instrument delivered pursuant hereto
         or in connection with the transactions described herein on or before
         the Closing Date shall have been true and correct in all material
         respects on and as of the date thereof and shall be true and correct in
         all material respects as of and on the Closing Date, as though made on
         and as of the Closing Date.

                  (h) Purchasers shall have performed in all material respects
         the covenants, agreements and obligations required to be performed by
         each of them under this Agreement prior to and on the Closing Date.

Asset Purchase Agreement
                                       24
<PAGE>   26

                                   ARTICLE XI
                               ACTIONS AT CLOSING

         11.1. TRANSFERS AT CLOSING. At Closing:

                  (a) Old Kofile and New Kofile shall deliver to each other a
         completed Bill of Sale, Receipt and Assignment and Assumption
         Agreement, in the form attached as Exhibit E, covering all of the
         Kofile Assets and Assumed Kofile Liabilities, duly executed by Old
         Kofile and New Kofile.

                  (b) Old Spectrum and New Spectrum shall deliver to each other
         a completed Bill of Sale, Receipt and Assignment and Assumption
         Agreement, in the form attached as Exhibit F, covering all of the
         Spectrum Assets and Assumed Spectrum Liabilities, duly executed by Old
         Spectrum and New Spectrum.

                  (c) Tyler shall deliver to ei Solutions a completed Bill of
         Sale and Receipt, in the form attached as Exhibit G, covering all of
         the Intangibles, duly executed by Tyler.

                  (d) Sellers shall deliver to Purchasers articles of transfer,
         assignments, licenses and such other instruments of transfer and
         conveyance, each duly executed by the appropriate Seller, as shall be
         reasonably necessary or appropriate to vest in appropriate Purchaser
         good and indefeasible title to the respective Assets, free and clear of
         all Encumbrances other than Permitted Encumbrances and to comply with
         the purposes and intent of this Agreement.

                  (e) Sellers shall deliver to Purchasers releases of all
         Encumbrances relating to the Assets (except for Permitted
         Encumbrances), duly executed by each respective lienholder.

                  (f) Sellers shall have delivered to Purchasers a certificate
         confirming the satisfaction of the conditions set forth in Section
         10.1(f) and (g).

                  (g) Purchasers shall have delivered to Sellers a certificate
         confirming the satisfaction of the conditions set forth in Section
         10.2(g) and (h).

                  (h) Purchasers shall deliver to Sellers the Purchase Price,
         payable as provided in Section 5.2.

         11.2. CONSENTS. At Closing, Sellers or Purchasers will deliver all
necessary consents of third parties to the assignment of the Assumed Contracts;
provided, however, that if the parties have been unable, after reasonable
attempts, to obtain one or more of such consents, and either (a) the parties
enter into a subcontract or sublicense, as contemplated by Section 8.6, with
respect to the contract or agreement to which such consent pertains, or (b) the
loss of the contract, agreement or license to which such consent pertains would
not, when taken as a whole with all other failures to obtain consents, have a
material adverse effect on the operations or the financial condition of the
respective Business taken as a whole, then the parties' failure to obtain such
consent will not constitute a failure of compliance with the provisions of this
Section 11.2.

Asset Purchase Agreement
                                       25
<PAGE>   27

                                   ARTICLE XII
                                  MISCELLANEOUS

         12.1. ASSIGNMENT; SUCCESSORS AND ASSIGNS. This Agreement and the rights
of the parties hereunder may not be assigned (except by operation of Law)
without the prior written consent of the other party. This Agreement shall be
binding upon and shall inure to the benefit of the parties hereto and their
successors and permitted assigns, including, without limitation, the heirs and
representatives of any party that is an individual.

         12.2. ENTIRE AGREEMENT. This Agreement (including the Schedules) and
the documents delivered pursuant hereto constitute the entire agreement and
understanding among the parties and supersede any prior agreement and
understanding relating to the subject matter of this Agreement.

         12.3. AMENDMENT; WAIVER. This Agreement may be modified or amended only
by a written instrument executed by the parties hereto, acting, as the case may
be, through their respective officers, duly authorized by their respective
Boards of Directors. No waiver of compliance with any provision or condition
hereof, and no consent provided for herein, will be effective unless evidenced
by an instrument in writing duly executed by the party sought to be charged
therewith. No failure on the part of any party to exercise, and no delay in
exercising, any of its rights hereunder will operate as a waiver thereof, nor
will any single or partial exercise by any party of any right preclude any other
or future exercise thereof or the exercise of any other right.

         12.4. NOTICES. Each notice, demand, waiver, consent and other
communication required or permitted to be given hereunder will be in writing and
will be sent either by (a) registered or certified first-class mail, postage
prepaid and return receipt requested, (b) national commercial courier service or
(c) telex or facsimile, in each case addressed as follows:

                  (a)      If to any Purchaser, addressed to it at:

                                            c/o eiStream, Inc.
                                            2800 W. Mockingbird Lane
                                            Dallas, Texas 75235
                                            Attn:    John D. Woolf
                                            Facsimile: 214-902-0211

                  (b)      If to any Seller, addressed to it at:

                                            c/o Tyler Technologies, Inc.
                                            2800 W. Mockingbird Lane
                                            Dallas, Texas 75235
                                            Attn:    H. Lynn Moore, Jr., Esq.
                                            Facsimile: 214-902-5058

Each such notice and other communication given by mail will be deemed to have
been given when it is deposited in the United States mail in the manner
specified herein, each such notice and other communication given by national
commercial courier service will be deemed to have been given when it

Asset Purchase Agreement
                                       26
<PAGE>   28

is delivered to such service, and each such notice and other communication given
by telex or facsimile will be deemed to have been given when it is so
transmitted and the appropriate answerback or confirmation of transmittal is
received. Any party may change its address for the purpose hereof by giving
notice in accordance with the provisions of this Section 12.4.

         12.5. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The representations
and warranties set forth in ARTICLE VI and ARTICLE VII shall survive the Closing
for a period of 18 months from the Closing Date (the "Expiration Date").

         12.6. EXERCISE OF RIGHTS AND REMEDIES. Except as otherwise provided
herein, no delay of or omission in the exercise of any right, power or remedy
accruing to any party as a result of any breach or default by any other party
under this Agreement shall impair any such right, power or remedy, nor shall it
be construed as a waiver of or acquiescence in any such breach or default, or of
any similar breach or default occurring later; nor shall any waiver of any
single breach or default be deemed a waiver of any other breach or default
occurring before or after that waiver.

         12.7. REFORMATION AND SEVERABILITY. In case any provision of this
Agreement shall be invalid, illegal or unenforceable, it shall, to the extent
possible, be modified in such manner as to be valid, legal and unenforceable,
but so as to most nearly retain the intent of the parties, and if such
modification is not possible, such provision shall be severed from this
Agreement, and in either case, the validity, legality and enforceability of the
remaining provisions of this Agreement shall not in any way be affected or
impaired thereby.

         12.8. GOVERNING LAW. This Agreement shall be construed in accordance
with the laws of the State of Texas (except for its principles governing
conflicts of laws).

         12.9. DISPUTE RESOLUTION.

                  (a) If any dispute arises between any parties to this
         regarding this Agreement or the transactions described herein, the
         persons named or referred to in Section 12.4 for each party will
         attempt in good faith to resolve the dispute. If those individuals have
         not agreed to a resolution within 30 days from the date on which the
         dispute was first presented to them, any party, by written notice to
         the other parties, may require that the dispute be submitted for
         resolution to, on behalf of Purchasers, Oates and, on behalf of
         Sellers, the chief executive officer of Tyler (the "Designated
         Parties"). The Designated Parties will meet, in person or by other
         means satisfactory to them, to attempt to resolve the dispute within 30
         days after reference of the matter to them. If the Designated Parties
         reach a decision within such 30-day period, their decision will be
         final and binding on the parties for all purposes. If the Designated
         Parties fail to resolve the dispute within such period, the matter may
         be referred for arbitration as provided by Section 12.9(b).

                  (b) Except as provided by Section 12.9(a), all disputes or
         controversies (whether of law or fact) of any nature whatsoever arising
         from or relating to this Agreement and the transactions described
         herein will be decided by arbitration by the American Arbitration
         Association (the "AAA") in accordance with the Commercial Arbitration
         Rules of the Association. The arbitrators will be selected as follows:
         the Designated Parties will, within 30 days of the date of demand by
         any Purchaser or Seller for arbitration, each select one independent,
         qualified arbitrator and the two

Asset Purchase Agreement
                                       27
<PAGE>   29

         arbitrators so selected will select the third arbitrator within 30 days
         after their appointment as party arbitrators. Each party will bear the
         expenses of the arbitrator chosen by it, and will bear one-half the
         expenses of the independent arbitrator. Hearings in the proceeding will
         commence within 120 days of the selection of the independent
         arbitrator. Arbitration will take place in Dallas, Texas. Arbitration
         proceedings will be conducted confidentially; in such case all
         documents, testimony and records will be received, heard and maintained
         by the arbitrators in confidence under seal, available for inspection
         only by AAA and the parties and their respective attorneys and experts,
         who will agree in advance and in writing to receive all such
         information confidentially and to maintain such information in
         confidence. The decree or award rendered by the arbitrators, who will
         act by majority vote, may be entered as a final and binding judgment in
         any court having jurisdiction thereof.

                  (c) All negotiations and proceedings pursuant to this Section
         12.9 will be confidential and will be treated as compromise and
         settlement negotiations for purposes of the United States Federal Rules
         of Evidence and any applicable state rules of evidence, provided that
         any party may specifically waive these rights of privilege and
         confidentiality with respect to any communications it makes pursuant to
         this Section 12.9.

         12.10. COUNTERPARTS. This Agreement may be executed simultaneously in
two or more counterparts, each of which shall be deemed an original and all of
which together shall constitute but one and the same instrument. Facsimile
transmission of any signed original document and/or retransmission of any signed
facsimile transmission will be deemed the same as delivery of an original. At
the request of any party, the parties will confirm facsimile transmission by
signing a duplicate original document.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

Asset Purchase Agreement
                                       28
<PAGE>   30

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first written above.

                                      TYLER TECHNOLOGIES, INC.

                                      By:
                                         ---------------------------------------
                                      Name: H. Lynn Moore, Jr.
                                           -------------------------------------
                                      Title: Corporate Counsel
                                            ------------------------------------

                                      KOFILE, INC.

                                      By:
                                         ---------------------------------------
                                      Name: H. Lynn Moore, Jr.
                                           -------------------------------------
                                      Title: Secretary
                                            ------------------------------------

                                      SPECTRUM DATA, INC.

                                      By:
                                         ---------------------------------------
                                      Name: H. Lynn Moore, Jr.
                                           -------------------------------------
                                      Title: Secretary
                                            ------------------------------------

                                      ei SOLUTIONS, INC.

                                      By:
                                         ---------------------------------------
                                      Name: John D. Woolf
                                           -------------------------------------
                                      Title: Vice President
                                            ------------------------------------

                                      KOFILE ACQUISITION CORPORATION

                                      By:
                                         ---------------------------------------
                                      Name: John D. Woolf
                                           -------------------------------------
                                      Title: Vice President
                                            ------------------------------------

                                      SPECTRUM DATA ACQUISITION CORPORATION

                                      By:
                                         ---------------------------------------
                                      Name: John D. Woolf
                                           -------------------------------------
                                      Title: Vice President
                                            ------------------------------------

Asset Purchase Agreement--Signature Page

<PAGE>   31

                                TABLE OF CONTENTS

<TABLE>
<S>   <C>                                                                     <C>
                                    ARTICLE I
                                   DEFINITIONS

1.1.  DEFINITIONS..............................................................2
1.2.  INTERPRETATION...........................................................6

                                   ARTICLE II
                               THE KOFILE PURCHASE

2.1.  ACQUISITION OF THE KOFILE ASSETS.........................................6
2.2.  EXCLUDED KOFILE ASSETS...................................................8
2.3.  ASSIGNMENT AND ASSUMPTION OF CONTRACTS...................................9
2.4.  ASSUMED LIABILITIES......................................................9
2.5.  LIABILITIES NOT ASSUMED..................................................9

                                   ARTICLE III
                              THE SPECTRUM PURCHASE

3.1.  ACQUISITION OF THE SPECTRUM ASSETS......................................10
3.2.  EXCLUDED SPECTRUM ASSETS................................................11
3.3.  ASSIGNMENT AND ASSUMPTION OF CONTRACTS..................................12
3.4.  ASSUMED LIABILITIES.....................................................12
3.5.  LIABILITIES NOT ASSUMED.................................................12

                                   ARTICLE IV
                                 OTHER PURCHASES

4.1.  ACQUISITION OF THE REAL PROPERTY........................................13
4.2.  ACQUISITION OF THE INTANGIBLES..........................................13

                                    ARTICLE V
                             PURCHASE PRICE; CLOSING

5.1.  PURCHASE PRICE..........................................................14
5.2.  PAYMENT OF PURCHASE PRICE...............................................14
5.3.  CLOSING.................................................................14
5.4.  EFFECTIVE TIME..........................................................14
5.5.  TRANSFER OF CASH AND CASH EQUIVALENTS...................................14
5.6.  POST-CLOSING ADJUSTMENT TO PURCHASE PRICE...............................14
5.7.  ALLOCATION OF PURCHASE PRICE............................................16

                                   ARTICLE VI
                    REPRESENTATIONS AND WARRANTIES OF SELLERS

6.1.  DUE ORGANIZATION AND QUALIFICATION......................................16
6.2.  AUTHORIZATION; NON-CONTRAVENTION; APPROVALS.............................16
6.3.  TITLE TO ASSETS.........................................................17
6.4.  TAXES...................................................................17
6.5.  BROKERS AND FINDERS.....................................................17
</TABLE>

Asset Purchase Agreement

<PAGE>   32

<TABLE>
<S>   <C>                                                                     <C>
6.6.  NO IMPLIED REPRESENTATIONS..............................................17

                                   ARTICLE VII
                  REPRESENTATIONS AND WARRANTIES OF PURCHASERS

7.1.  DUE ORGANIZATION AND QUALIFICATION......................................18
7.2.  AUTHORIZATION; NON-CONTRAVENTION; APPROVALS.............................18
7.3.  BROKERS AND FINDERS.....................................................19
7.4.  NO IMPLIED REPRESENTATIONS..............................................19

                                  ARTICLE VIII
                                CERTAIN COVENANTS

8.1.  CONDUCT OF BUSINESS.....................................................19
8.2.  FUTURE COOPERATION; TAX MATTERS.........................................19
8.3.  TAX STATUS AND EFFECT...................................................19
8.4.  EXPENSES................................................................20
8.5.  CONSENTS TO ASSIGNMENT..................................................20
8.6.  SUBCONTRACTS............................................................20
8.7.  NAME CHANGE; CORPORATE EXISTENCE........................................20
8.8.  BULK SALES..............................................................20
8.9.  RELATED TRANSACTIONS....................................................20
8.10.  PAYMENT OF LIABILITIES.................................................20
8.11.  TRANSITION SERVICES....................................................21

                                   ARTICLE IX
                                 INDEMNIFICATION

9.1.  INDEMNIFICATION BY OLD KOFILE AND OLD SPECTRUM..........................21
9.2.  INDEMNIFICATION BY NEW KOFILE AND NEW SPECTRUM..........................21
9.3.  THIRD PERSON CLAIMS.....................................................21
9.4.  NON-THIRD PERSON CLAIMS.................................................22
9.5.  INDEMNIFICATION DEDUCTIBLE..............................................23
9.6.  INDEMNIFICATION LIMITATION..............................................23

                                    ARTICLE X
                              CONDITIONS TO CLOSING

10.1.  CONDITIONS TO OBLIGATIONS OF PURCHASERS................................23
10.2.  CONDITIONS TO OBLIGATIONS OF SELLERS...................................24

                                   ARTICLE XI
                               ACTIONS AT CLOSING

11.1.  TRANSFERS AT CLOSING...................................................25
11.2.  CONSENTS...............................................................25
</TABLE>

Asset Purchase Agreement
                                       ii
<PAGE>   33

<TABLE>
<S>   <C>                                                                     <C>
                                   ARTICLE XII
                                  MISCELLANEOUS

12.1.  ASSIGNMENT; SUCCESSORS AND ASSIGNS.....................................26
12.2.  ENTIRE AGREEMENT.......................................................26
12.3.  AMENDMENT; WAIVER......................................................26
12.4.  NOTICES................................................................26
12.5.  SURVIVAL OF REPRESENTATIONS AND WARRANTIES.............................27
12.6.  EXERCISE OF RIGHTS AND REMEDIES........................................27
12.7.  REFORMATION AND SEVERABILITY...........................................27
12.8.  GOVERNING LAW..........................................................27
12.9.  DISPUTE RESOLUTION.....................................................27
12.10. COUNTERPARTS...........................................................28
</TABLE>

Asset Purchase Agreement
                                       iii

<PAGE>   34

                                    EXHIBIT A

                        REAL PROPERTY PURCHASE AGREEMENT

Asset Purchase Agreement

<PAGE>   35

                                    EXHIBIT B

                               FORM OF SUBCONTRACT

Asset Purchase Agreement

<PAGE>   36

                                    EXHIBIT C

                                 LEASE AGREEMENT

Asset Purchase Agreement

<PAGE>   37

                                    EXHIBIT D

              AMENDMENT TO EMPLOYMENT AND NONCOMPETITION AGREEMENT

Asset Purchase Agreement

<PAGE>   38

                                    EXHIBIT E

          BILL OF SALE, RECEIPT AND ASSIGNMENT AND ASSUMPTION AGREEMENT
                                (KOFILE PURCHASE)

Asset Purchase Agreement

<PAGE>   39

                                    EXHIBIT F

          BILL OF SALE, RECEIPT AND ASSIGNMENT AND ASSUMPTION AGREEMENT
                               (SPECTRUM PURCHASE)

Asset Purchase Agreement

<PAGE>   40

                                    EXHIBIT G

                            BILL OF SALE AND RECEIPT
                             (INTANGIBLES PURCHASE)

Asset Purchase Agreement

<PAGE>   41

                                  SCHEDULE 5.2

                            PAYMENT OF PURCHASE PRICE

RECIPIENT(S):

<TABLE>
<S>      <C>                                     <C>
Name:    Bank of America, N.A.
                Amount:                          $8,200,000.00
                Wire Instructions:
                       Bank Name:                Bank of America, N.A.
                       ABA Routing No.:          111000012
                       Account No.:              1292000883
                       Attn:                     Credit Services, Re: Tyler Technologies
</TABLE>

Asset Purchase Agreement

<PAGE>   42

                                  SCHEDULE 5.6

                          ADJUSTMENTS TO PURCHASE PRICE

1.       See attached schedule for Agreed Kofile Net Asset Value and Agreed
         Spectrum Net Asset Value.

2.       Schedule of Closing Kofile Net Asset Value and Closing Spectrum Net
         Asset Value to be mutually agreed upon and attached as part of
         Supplemental Schedule 5.6 within 45 days after the Closing Date.

3.       Calculation of Net Asset Value Adjustment to be mutually agreed upon
         and attached as part of Supplemental Schedule 5.6 within 45 days after
         the Closing Date.

4.       Calculation of Net Cash Adjustment to be mutually agreed upon and
         attached as part of Supplemental Schedule 5.6 within 45 days after the
         Closing Date.

Asset Purchase Agreement

<PAGE>   43

                                  SCHEDULE 5.7

                          ALLOCATION OF PURCHASE PRICE

         To be mutually agreed upon and attached within 90 days after the
Closing Date.

Asset Purchase Agreement<PAGE>   1
                                                                    EXHIBIT 4.8

                           PURCHASE AND SALE AGREEMENT

         THIS PURCHASE AND SALE AGREEMENT (this "AGREEMENT") is made by and
between Purchaser and Seller as of the Effective Date.

         In consideration of the mutual covenants and representations herein
contained, and other good and valuable consideration the receipt and sufficiency
of which are hereby acknowledged, Seller and Purchaser agree as follows:

                                       1.
                                   DEFINITIONS

         1.1 As used herein, the following terms shall have the meanings set
forth below in this SECTION 1.1:

         "AGREEMENT" has the meaning set forth in the first paragraph of this
Agreement.

         "APPROVAL PERIOD" shall mean the period commencing on the Effective
Date and ending at 5:00 P.M., Dallas, Texas time, on the 20th day thereafter;
provided, however, in no event shall the Approval Period extend beyond September
29, 2000.

         "CLOSING" shall mean the act of settlement of the purchase and sale of
the Properties in accordance with this Agreement at which, among other matters,
title to the Mockingbird Property and the San Antonio Property is conveyed from
Seller to Purchaser and the Purchase Price is paid by Purchaser to Seller.

         "CLOSING DATE" shall mean September 29, 2000.

         "EFFECTIVE DATE" shall mean the first date the Title Company is in
receipt of this Agreement executed by Purchaser and Seller (whether in
counterparts or not).

         "IMPROVEMENTS" shall mean any building, fixtures, fences, plantings and
other improvements and installations located on or beneath the Land.

         "INSPECTION MATERIALS" shall mean the Title Commitment, the Survey, and
to the extent in Seller's possession, any environmental reports, engineering
studies, warranties, and guaranties.

         "LAND" shall mean (i) in the case of the Mockingbird Property, that
certain tract of land located in the City of Dallas, Dallas County, Texas, being
more particularly described on EXHIBIT A-1 attached hereto and made a part
hereof, and (ii) in the case of the San Antonio Property, that certain tract of
land located in the City of San Antonio, Bexar County, Texas, being more
particularly described on EXHIBIT A-2 attached hereto and made a part hereof.

PURCHASE AND SALE AGREEMENT - Page 1

<PAGE>   2

         "MOCKINGBIRD LEASE" shall mean the lease to be executed at Closing
between Tyler Technologies, Inc., as tenant, and Purchaser, as landlord, for the
Mockingbird Property as set forth on EXHIBIT D attached hereto and made a part
hereof.

         "MOCKINGBIRD PROPERTY" shall mean the Property owned by Seller and more
particularly described on EXHIBIT A-1.

         "OWNER'S POLICY" shall mean, except to the extent modified by SECTION
7.5(A), the Owner's Policy of Title Insurance in the standard form in use in the
State, naming Purchaser as insured, insuring that Purchaser owns fee simple
title to the Property, subject only to the Permitted Encumbrances.

         "PROPERTY" shall mean with respect to each of the (i) Mockingbird
Property, and (ii) San Antonio Property, to the extent assignable or
transferable, all right, title and interest to be conveyed by Seller to
Purchaser upon the terms set forth in this Agreement, including the following
described property:

              (a) Land. The Land.

              (b) Easements. All easements, if any, benefiting the Land or the
         Improvements.

              (c) Rights and Appurtenances. All rights and appurtenances
         pertaining to the Land, including any right, title and interest of the
         Seller in and to adjacent streets, alleys or rights-of-way.

              (d) Improvements. The Improvements.

              (e) Fixtures. All fixtures, if any, owned by Seller and located
         on or about the Land and the Improvements.

         Any reference to "PROPERTY" or "PROPERTIES" shall mean individually or
collectively as the context may require (i) the Mockingbird Property, and (ii)
the San Antonio Property.

         "PURCHASE PRICE" shall mean Six Million One Hundred and Fifty Thousand
and no/100 Dollars ($6,150,000.00).

         "PURCHASER" shall mean William D. and Marilyn Oates, whose address
for notice under this Agreement is 4900 Lakeside Drive, Dallas, Texas 75205.

         "SAN ANTONIO PROPERTY" shall mean the Property owned by Seller and more
particularly described on EXHIBIT A-2.

         "SELLER" shall mean, collectively or individually as the context may
require, (i) with respect to the Mockingbird Property, Business Resources
Corporation, a Texas corporation, whose

PURCHASE AND SALE AGREEMENT - Page 2
<PAGE>   3

address for notice under this Agreement is 2800 West Mockingbird Land, Dallas,
Texas 75235, and (ii) with respect to the San Antonio Property, Spectrum Data,
Inc., a Texas corporation, whose address for notice under this Agreement is
10537 Gulfdale Road, San Antonio, Texas 78216.

         "STATE" shall mean the State of Texas.

         "SURVEY" shall mean a current as-built survey of the Property.

         "TITLE COMMITMENT" shall mean a Commitment(s) for Owner's Policy of
Title Insurance with respect to the Property issued by the Title Company
together with legible copies of any restrictive covenants, easements and other
items listed as title exceptions in such Commitment(s).

         "TITLE COMPANY" shall mean American Title Company whose address for
notice under this Agreement is as follows:

                              American Title Company
                              1909 Woodall Rodgers Freeway
                              Suite 4000
                              Attention: Bo Feagin
                              Tel: 214-754-7000
                              Fax: 214-303-0935

                                       2.
                                PURCHASE AND SALE

         2.1 Purchase and Sale. Subject to the terms and conditions of this
Agreement, Seller hereby agrees to sell and convey to Purchaser, and Purchaser
hereby agrees to purchase from Seller, all of the Seller's assignable and
transferable right, title and interest in and to the Mockingbird Property and
the San Antonio Property.

         2.2 Independent Consideration. Upon execution of this Agreement,
Purchaser has delivered to Seller, and Seller acknowledges receipt of, FIFTY AND
NO/100 DOLLARS ($50.00) (the "INDEPENDENT CONSIDERATION"), as consideration for
Purchaser's right to purchase the Property and for Seller's execution, delivery
and performance of this Agreement. The Independent Consideration is in addition
to and independent of any other consideration or payment provided for in this
Agreement, is non-refundable and shall be retained by Seller notwithstanding any
other provision of this Agreement.

PURCHASE AND SALE AGREEMENT - Page 3
<PAGE>   4

                                       3.
                                 PURCHASE PRICE

         3.1 Purchase Price. The Purchase Price shall be paid in cash by
Purchaser to Seller at the Closing by wire transfer in accordance with wire
transfer instructions to be provided by Seller. If Purchaser terminates this
Agreement in accordance with any right to terminate granted to Purchaser by the
terms of this Agreement, Purchaser agrees to return to Seller all Inspection
Materials previously provided at the time such notice to terminate this
Agreement is given, and no party hereto shall have any further obligations under
this Agreement except for such obligations which by their terms expressly
survive the termination of this Agreement (the "SURVIVING OBLIGATIONS"). The
obligations to return the Inspection Materials shall survive the termination of
this Agreement. At the Closing, the Seller shall deliver to Purchaser the Deeds
described in SECTION 7.7.

                                       4.
                                 EARNEST MONEY

         4.1 Earnest Money. Intentionally deleted.

                                       5.
                              CONDITIONS TO CLOSING

         5.1 Seller's Obligations. Seller shall deliver the Inspection Materials
to Purchaser, at Seller's expense, within ten (10) days after the Effective
Date. Purchaser's sole remedy for such failure shall be Purchaser's right to
terminate this Agreement by delivering written notice thereof to Seller prior to
the end of the Approval Period, in which event neither party shall have any
obligation hereunder except for the Surviving Obligations.

         5.2 Title Commitment and Survey.

               5.2.1 In the event (i) the Survey shows any easement,
               right-of-way, encroachment, conflict, protrusion or other matter
               affecting the Property that is unacceptable to Purchaser, or (ii)
               any exceptions appear in the Title Commitment other than the
               standard printed exceptions set forth in the standard form of
               Commitment for Title Insurance in use in the State, that are
               unacceptable to Purchaser, Purchaser shall within five (5)
               business days after receipt of the Survey and the Title
               Commitment, notify Seller in writing of such facts and the
               reasons therefor ("PURCHASER'S OBJECTIONS"). Upon the expiration
               of said five (5) business day period, except for Purchaser's
               Objections if same are timely raised, Purchaser shall be deemed
               to have accepted the form and substance of the Survey and the
               Title Commitment. Notwithstanding anything to the contrary
               contained herein and except with respect to liens and security
               interests in the Property which may be released by the payment of
               a liquidated

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<PAGE>   5

               sum of money not to exceed in the aggregate the total proceeds of
               Closing, Seller shall have no obligations to take any steps or
               bring any action or proceeding or otherwise to incur any effort
               or expense whatsoever to eliminate or modify any of the
               Purchaser's Objections. Seller may, within five (5) days after
               receipt of written notice of Purchaser's Objections ("SELLER'S
               CURE PERIOD"), deliver to Purchaser written notice ("SELLER'S
               CURE NOTICE") setting forth which of Purchaser's Objections
               Seller will endeavor to cure prior to the Closing Date and which
               of Purchaser's Objections Seller cannot or does not intend to
               cure. If Seller has not given Seller's Cure Notice by the end of
               Seller's Cure Period, Seller shall be deemed to have given notice
               that it does not intend to cure any of Purchaser's Objections. If
               by the end of the Approval Period, Seller has not cured or
               undertaken to cure all of Purchaser's Objections to the
               reasonable satisfaction of Purchaser, Purchaser may (as its sole
               and exclusive remedy) terminate this Agreement by delivering
               written notice thereof to Seller at or before the expiration of
               the Approval Period. If by the Closing Date, Seller has not cured
               to the reasonable satisfaction of Purchaser all of Purchaser's
               Objections which Seller has in Seller's Cure Notice undertaken to
               cure, Purchaser may (as its sole and exclusive remedy) terminate
               this Agreement by written notice to Seller on the Closing Date.
               In the event of a termination of this Agreement by Purchaser
               under this SECTION 5.2.1, neither party shall have any further
               obligations hereunder other than the Surviving Obligations.

               5.2.2 The term "PERMITTED ENCUMBRANCES" as used herein includes:
               (i) any easement, right of way, encroachment, conflict,
               discrepancy, overlapping of improvements, protrusion,
               encumbrance, restriction, condition, covenant, exception or other
               matter with respect to the Property that is reflected or
               addressed on the Survey or the Title Commitment to which
               Purchaser fails to timely object pursuant to SECTION 5.2.1 of
               this Agreement; (ii) except with respect to liens and security
               interests in the Property which may be released by the payment of
               a liquidated sum of money not to exceed in the aggregate the
               total proceeds of Closing, any Purchaser's Objection which in
               Seller's Cure Notice Seller has undertaken to cure that remains
               uncured, for whatever reason, at the Closing Date; (iii) except
               with respect to liens and security interests which may be
               satisfied by the payment of money, any Purchaser's Objections
               which by the end of the Approval Period Seller has given, or is
               deemed to have given, notice that it cannot or does not intend to
               cure; and (iv) the rights and interests of parties claiming under
               the Mockingbird Lease.

               5.2.3 Limitations of Seller's Obligations. Notwithstanding
               anything contained herein to the contrary, Seller shall have no
               obligation to take any steps, bring any action or proceeding or
               incur any effort or expense whatsoever (except the payment of
               funds required to release any liens or security interests
               affecting the Property as set forth in SECTION 5.2.1 and SECTION
               5.2.2) to eliminate, modify or cure any objection Purchaser may
               have pursuant to SECTION 5.2.1 or SECTION 5.2.2.

PURCHASE AND SALE AGREEMENT - Page 5
<PAGE>   6

         5.3 Purchaser's Representations and Warranties. Purchaser represents
and warrants to Seller that (a) if Purchaser is a partnership or corporation, it
is duly organized and in good standing under the laws of the State of its
organization, is qualified to do business in the State and has the power to
enter into this Agreement and to execute and deliver this Agreement and to
perform all duties and obligations imposed upon it hereunder, and Purchaser has
obtained all necessary partnership and corporate authorizations required in
connection with the execution, delivery and performance contemplated by this
Agreement and has obtained the consent of all entities and parties necessary to
bind Purchaser to this Agreement, and (b) neither the execution nor the delivery
of this Agreement, nor the consummation of the purchase and sale contemplated
hereby, nor the fulfillment of or compliance with the terms and conditions of
this Agreement conflict with or will result in the breach of any of the terms,
conditions, or provisions of any agreement or instrument to which Purchaser, or
any partner or related entity or affiliate of Purchaser, is a party or by which
Purchaser, any partner or related entity or affiliate of Purchaser, or any of
Purchaser's assets is bound. The Purchaser's representations and warranties set
forth in this SECTION 5.3 shall survive the Closing or termination of this
Agreement. Purchaser's representations and warranties contained herein must be
true and correct through the Closing Date, and Purchaser's failure to notify
Seller prior to the Closing Date of any inaccuracies shall be a default by
Purchaser under this Agreement.

         5.4 Seller's Representations and Warranties. Seller represents and
warrants to Purchaser that (a) Seller has the full partnership/corporate right,
power, and authority, without the joinder of any other person or entity, to
enter into, execute and deliver this Agreement, and to perform all duties and
obligations imposed on Seller under this Agreement, and (b) neither the
execution nor the delivery of this Agreement, nor the consummation of the
purchase and sale contemplated hereby, nor the fulfillment of or compliance with
the terms and conditions of this Agreement conflict with or will result in the
breach of any of the terms, conditions, or provisions of any agreement or
instrument to which Seller is a party or by which Seller or any of Seller's
assets is bound, and (c) except as disclosed to Purchaser in writing, Seller has
no actual knowledge that Seller has received from any governmental authority,
holder of any mortgage or board of fire underwriters (or other body performing
similar functions) any written notices (i) requiring any work, repairs,
construction, alterations or installations on or in connection with the Property
in order to comply with any applicable law, regulation or other governmental
requirement, or (ii) asserting any violation of any applicable law, regulation
or other governmental requirement, and (d) to Seller's actual knowledge, Seller
has not received any written notices of condemnation proceedings, zoning change
or special assessments or uncorrected violations of the applicable housing,
building, safety, fire or any other ordinances with respect to the Property. The
Seller's representations and warranties set forth in this SECTION 5.4 shall
survive the Closing for a period of eighteen (18) months, and any action filed
pursuant to a breach of Seller's representations and warranties set forth in
this SECTION 5.4 must be commenced, if at all, within twenty-four (24) months of
the Closing.

         5.5 Defective Condition Extension; Termination. The obligations of
Seller hereunder are subject to and contingent upon the following:

         In the event that subsequent to the execution of this Agreement Seller
obtains knowledge of, or Purchaser's inspection of the Property reveals, either
(i) the presence of any Hazardous Materials (as defined in SECTION 6.2 hereof)
or the violation or potential violation of any

PURCHASE AND SALE AGREEMENT - Page 6
<PAGE>   7

Environmental Requirements (as defined in SECTION 6.3 hereof) or (ii) any
structural or other defect in the Improvements, whether or not in violation of
any applicable law, ordinance, code, regulation or decree of any governmental
authority having jurisdiction over the Property (collectively, a "DEFECTIVE
CONDITION"), which Seller, in its sole judgment, determines could constitute a
potential liability to Seller after the Closing or should be remedied prior to
the sale of the Property, Seller shall have the right upon written notice to
Purchaser on or before the scheduled Closing Date either (i) to extend the
Closing Date for the period of time necessary to complete such remediation at
Seller's sole cost and expense, or (ii) to terminate this Agreement upon written
notice to Purchaser, in which event neither party shall have any further right
or obligation hereunder other than the Surviving Obligations. The terms of this
SECTION 5.5 are solely for the benefit of Seller, and Purchaser shall have no
additional right or remedy hereunder as a result of the exercise by Seller of
its rights under this Section.

                                       6.
                   NO REPRESENTATIONS OR WARRANTIES BY SELLER;
                             ACCEPTANCE OF PROPERTY

         6.1 Disclaimer. PURCHASER ACKNOWLEDGES AND AGREES THAT SELLER HAS NOT
MADE, DOES NOT MAKE AND SPECIFICALLY NEGATES AND DISCLAIMS ANY REPRESENTATIONS,
WARRANTIES (OTHER THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN
THIS AGREEMENT AND THE SPECIAL WARRANTY OF TITLE AS SET OUT IN THE DEEDS, AS
DEFINED BELOW), PROMISES, COVENANTS, AGREEMENTS OR GUARANTIES OF ANY KIND OR
CHARACTER WHATSOEVER, WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, PAST, PRESENT
OR FUTURE, OF, AS TO, CONCERNING OR WITH RESPECT TO (A) THE VALUE, NATURE,
QUALITY OR CONDITION OF THE PROPERTY, INCLUDING, WITHOUT LIMITATION, THE WATER,
SOIL AND GEOLOGY, (B) THE INCOME TO BE DERIVED FROM THE PROPERTY, (C) THE
SUITABILITY OF THE PROPERTY FOR ANY AND ALL ACTIVITIES AND USES WHICH PURCHASER
OR ANY TENANT MAY CONDUCT THEREON, (D) THE COMPLIANCE OF OR BY THE PROPERTY OR
ITS OPERATION WITH ANY LAWS, RULES, ORDINANCES OR REGULATIONS OF ANY APPLICABLE
GOVERNMENTAL AUTHORITY OR BODY, (E) THE HABITABILITY, MERCHANTABILITY,
MARKETABILITY, PROFITABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE
PROPERTY, (F) THE MANNER OR QUALITY OF THE CONSTRUCTION OR MATERIALS, IF ANY,
INCORPORATED INTO THE PROPERTY, (G) THE MANNER, QUALITY, STATE OF REPAIR OR LACK
OF REPAIR OF THE PROPERTY, OR (H) COMPLIANCE WITH ANY ENVIRONMENTAL PROTECTION,
POLLUTION OR LAND USE LAWS, RULES, REGULATIONS, ORDERS OR REQUIREMENTS,
INCLUDING THE EXISTENCE IN OR ON THE PROPERTY OF HAZARDOUS MATERIALS (AS DEFINED
BELOW) OR (I) ANY OTHER MATTER WITH RESPECT TO THE PROPERTY. ADDITIONALLY, NO
PERSON ACTING ON BEHALF OF SELLER IS AUTHORIZED TO MAKE, AND BY EXECUTION HEREOF
PURCHASER ACKNOWLEDGES THAT NO PERSON HAS MADE, ANY REPRESENTATION, AGREEMENT,
STATEMENT, WARRANTY, GUARANTY OR PROMISE REGARDING THE PROPERTY OR THE
TRANSACTION CONTEMPLATED HEREIN; AND NO SUCH REPRESENTATION, WARRANTY,
AGREEMENT, GUARANTY, STATEMENT OR PROMISE

PURCHASE AND SALE AGREEMENT - Page 7
<PAGE>   8

IF ANY, MADE BY ANY PERSON ACTING ON BEHALF OF SELLER SHALL BE VALID OR BINDING
UPON SELLER UNLESS EXPRESSLY SET FORTH HEREIN. PURCHASER FURTHER ACKNOWLEDGES
AND AGREES THAT HAVING BEEN GIVEN THE OPPORTUNITY TO INSPECT THE PROPERTY,
EXCEPT FOR THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THIS
AGREEMENT AND THE SPECIAL WARRANTY OF TITLE AS SET OUT IN THE DEEDS, PURCHASER
IS RELYING SOLELY ON ITS OWN INVESTIGATION OF THE PROPERTY AND NOT ON ANY
INFORMATION PROVIDED OR TO BE PROVIDED BY SELLER AND AGREES TO ACCEPT THE
PROPERTY AT THE CLOSING AND WAIVE ALL OBJECTIONS OR CLAIMS AGAINST SELLER
(INCLUDING, BUT NOT LIMITED TO, ANY RIGHT OR CLAIM OF CONTRIBUTION) ARISING FROM
OR RELATED TO THE PROPERTY OR TO ANY HAZARDOUS MATERIALS ON THE PROPERTY.
PURCHASER FURTHER ACKNOWLEDGES AND AGREES THAT ANY INFORMATION PROVIDED OR TO BE
PROVIDED WITH RESPECT TO THE PROPERTY WAS OBTAINED FROM A VARIETY OF SOURCES AND
THAT SELLER HAS NOT MADE ANY INDEPENDENT INVESTIGATION OR VERIFICATION OF SUCH
INFORMATION AND MAKES NO REPRESENTATIONS AS TO THE ACCURACY, TRUTHFULNESS OR
COMPLETENESS OF SUCH INFORMATION. EXCEPT FOR THE EXPRESS REPRESENTATIONS AND
WARRANTIES SET FORTH IN THIS AGREEMENT AND THE SPECIAL WARRANTY OF TITLE AS SET
OUT IN THE DEEDS, SELLER IS NOT LIABLE OR BOUND IN ANY MANNER BY ANY VERBAL OR
WRITTEN STATEMENT, REPRESENTATION OR INFORMATION PERTAINING TO THE PROPERTY, OR
THE OPERATION THEREOF, FURNISHED BY ANY REAL ESTATE BROKER, CONTRACTOR, AGENT,
EMPLOYEE, SERVANT OR OTHER PERSON. PURCHASER FURTHER ACKNOWLEDGES AND AGREES
THAT (OTHER THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THIS
AGREEMENT AND THE SPECIAL WARRANTY OF TITLE AS SET OUT IN THE DEEDS) TO THE
MAXIMUM EXTENT PERMITTED BY LAW, THE SALE OF THE PROPERTY AS PROVIDED FOR HEREIN
IS MADE ON AN "AS IS" CONDITION AND BASIS WITH ALL FAULTS. THE PROVISIONS OF
THIS SECTION 6 SHALL SURVIVE THE CLOSING OR ANY TERMINATION HEREOF.

         6.2 Hazardous Materials. "Hazardous Materials" shall mean any substance
which is or contains (i) any "hazardous substance" as now or hereafter defined
in Section 101(14) of the Comprehensive Environmental Response, Compensation,
and Liability Act of 1980, as amended (42 U.S.C. Section 9601 et seq.)
("CERCLA") or any regulations promulgated under CERCLA; (ii) any "hazardous
waste" as now or hereafter defined in the Resource Conservation and Recovery Act
(42 U.S.C. Section 6901 et seq.) ("RCRA") or regulations promulgated under RCRA;
(iii) any substance regulated by the Toxic Substances Control Act (15 U.S.C.
Section 2601 et seq.); (iv) gasoline, diesel fuel, or other petroleum
hydrocarbons; (v) asbestos and asbestos containing materials, in any form,
whether friable or non-friable; (vi) polychlorinated biphenyls; (vii) radon gas;
and (viii) any additional substances or materials which are now or hereafter
classified or considered to be hazardous or toxic under Environmental
Requirements (as hereinafter defined) or the common law, or any other applicable
laws relating to the Property. Hazardous Materials shall include, without
limitation, any substance, the presence of which on the Property, (A) requires
reporting, investigation or remediation under Environmental Requirements; (B)
causes or threatens to cause a nuisance on

PURCHASE AND SALE AGREEMENT - Page 8
<PAGE>   9

the Property or adjacent property or poses or threatens to pose a hazard to the
health or safety of persons on the Property or adjacent property; or (C) which,
if it emanated or migrated from the Property, could constitute a trespass.

         6.3 Environmental Requirements. "Environmental Requirements" shall mean
all laws, ordinances, statutes, codes, rules, regulations, agreements,
judgments, orders, and decrees, now or hereafter enacted, promulgated, or
amended, of the United States, the states, the counties, the cities, or any
other political subdivisions in which the Property is located, and any other
political subdivision, agency or instrumentality exercising jurisdiction over
the owner of the Property, the Property, or the use of the Property, relating to
pollution, the protection or regulation of human health, natural resources, or
the environment, or the emission, discharge, release or threatened release of
pollutants, contaminants, chemicals, or industrial, toxic or hazardous
substances or waste or Hazardous Materials into the environment (including,
without limitation, ambient air, surface water, ground water or land or soil).

                                       7.
                                     CLOSING

         7.1 Closing. The Closing shall be held at the offices of the Title
Company on the Closing Date, unless the parties mutually agree in writing upon
another place, time or date.

         7.2 Possession. Except as set forth in SECTION 7.8, possession of the
Property shall be delivered to Purchaser at the Closing, subject to the
Permitted Encumbrances.

         7.3 Proration. In that the Mockingbird Lease is a triple-net lease,
there will not be any prorations or related cash adjustments effected at Closing
with respect to real estate and personal property taxes, utilities and all other
operating expenses with respect to the Mockingbird Property. All real estate and
personal property taxes, utilities and all other operating expenses with respect
to the San Antonio Property shall be prorated as of the Closing Date.

         7.4 Closing Costs. Except as otherwise expressly provided herein,
Seller shall pay, on the Closing Date, the title insurance premium for the
Owner's Policy and one-half (1/2) of the cost to amend the survey exception to
read "any shortages in area," the cost of the Survey, and one-half (1/2) of any
escrow fees and other customary charges of the Title Company, and Purchaser
shall pay, on the Closing Date, all recording costs, the one-half (1/2) of the
cost to amend the survey exception to read "any shortages in area," deed
transfer taxes or documentary stamps, one-half (1/2) of any escrow fees and
other customary charges of the Title Company. Except as otherwise provided
herein, each party shall pay its own attorneys' fees.

         7.5 Seller's Obligations at the Closing. At the Closing, Seller shall
deliver to Purchaser the following:

              (a) Title Policy. Owner's Policy, which upon payment by Seller
         and Purchaser of the sum set forth in SECTION 7.4, shall be amended
         such that the survey exception shall read "any shortages in area."

PURCHASE AND SALE AGREEMENT - Page 9
<PAGE>   10

              (b) Evidence of Authority. Such organizational and authorizing
         documents of Seller as shall be reasonably required by the Title
         Company to evidence Seller's authority to consummate the transactions
         contemplated by this Agreement.

              (c) Foreign Person. An affidavit of Seller certifying that Seller
         is not a "foreign person," as defined in the federal Foreign
         Investment in Real Property Tax Act of 1980, and the 1984 Tax Reform
         Act, as amended.

              (d) Warranties and guaranties. The originals of all warranties
         and guaranties, if any, in the possession of Seller.

              (e) Keys. A complete set of keys and access devices necessary to
         enable Purchaser to obtain access to the Property.

         7.6 Purchaser's Obligations at the Closing. At the Closing, Purchaser
shall deliver to Seller the following:

              (a) Purchase Price. The Purchase Price by wire transfer of
         immediately available funds.

              (b) Evidence of Authority. Such organizational and authorizing
         documents of Purchaser as shall be reasonably required by Seller
         and/or the Title Company authorizing Purchaser's acquisition of the
         Property pursuant to this Agreement and the execution of this
         Agreement and any documents to be executed by Purchaser at the
         Closing.

              (c) The duly executed Mockingbird Lease.

         7.7 Documents to be Executed by Seller and Purchaser. At the Closing,
Seller and Purchaser shall also execute and deliver the following:

              (a) Deed. Special Warranty Deeds (the "DEEDS") conveying the Land
         and the Improvements to Purchaser subject to no exceptions other than
         the Permitted Encumbrances, in the forms attached to this Agreement as
         EXHIBIT B-1 AND B-2.

              (b) Tenant Notices. If applicable, signed statements or notices
         to all tenants of the Property notifying such tenants that the
         Property has been transferred to Purchaser and that Purchaser is
         responsible for security deposits (specifying the amounts of such
         deposits).

              (c) Assignment and Assumption of Fixtures, and Warranties.
         Assignment in the forms attached to this Agreement as EXHIBIT C-1 and
         EXHIBIT C-2.

         7.8 Leaseback of the Mockingbird Property. At Closing, Tyler
Technologies, Inc., as tenant, and Purchaser, as landlord, shall enter into the
Mockingbird Lease.

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<PAGE>   11

                                       8.
                                  RISK OF LOSS

         8.1 Condemnation. If, prior to the Closing, action is initiated to take
any of the Property by eminent domain proceedings or by deed in lieu thereof,
Purchaser may either at or prior to Closing (a) terminate this Agreement, or (b)
consummate the Closing, in which latter event all of Seller's assignable right,
title and interest in and to the award of the condemning authority shall be
assigned to Purchaser at the Closing and there shall be no reduction in the
Purchase Price.

         8.2 Casualty. Seller assumes all risks and liability for damage to or
injury occurring to the Property by fire, storm, accident, or any other casualty
or cause until the Closing has been consummated. If the Property, or any part
thereof, suffers any damage in excess of thirty percent (30%) of the Purchase
Price prior to the Closing from fire or other casualty, which Seller, at its
sole option, does not elect to repair, Purchaser may either at or prior to
Closing (a) terminate this Agreement, or (b) consummate the Closing, in which
latter event all of Seller's right, title and interest in and to the proceeds of
any insurance covering such damage (less an amount equal to any expenses and
costs incurred by Seller to repair or restore the Property and any portion of
such proceeds paid or to be paid pursuant to rental loss insurance on account of
the loss of rents or other income from the Property for the period prior to and
including the Closing Date, all of which shall be payable to Seller), to the
extent the amount of such insurance does not exceed the Purchase Price, shall be
assigned to Purchaser at the Closing. If the Property, or any part thereof,
suffers any damage less than thirty percent (30%) of the Purchase Price prior to
the Closing, Purchaser agrees that it will consummate the Closing and accept the
assignment of the proceeds of any insurance covering such damage plus Seller
shall pay to Purchaser an amount equal to Seller's deductible under its
insurance policy and there shall be no reduction in the Purchase Price.

                                       9.
                                     DEFAULT

         9.1 Breach by Seller. Except as otherwise provided in SECTION 5.4, in
the event that Seller shall default in any of its obligations hereunder to be
performed prior to closing, for any reason other than Purchaser's default or a
termination of this Agreement by Purchaser or Seller pursuant to a right to do
so under the provisions hereof, Purchaser, as its sole and exclusive remedy may
terminate this Agreement or sue for specific performance.

         9.2 Breach by Purchaser. In the event that Purchaser shall default in
any of its obligations hereunder to be performed prior to or after closing (the
Surviving Obligations), for any reason other than Seller's default or a
termination of this Agreement by Purchaser or Seller pursuant to a right to do
so under the provisions hereof, Seller, as its sole and exclusive remedy may
terminate this Agreement.

         The provisions of this SECTION 9.2 shall not limit or affect any of
Purchaser's indemnities as provided in other Sections of this Agreement.

PURCHASE AND SALE AGREEMENT - Page 11
<PAGE>   12

                                       10.
                                FUTURE OPERATIONS

         10.1 Future Operations.

              (a) From the date of this Agreement until the Closing or earlier
         termination of this Agreement, Seller will keep and maintain the
         Property in substantially its condition as of the date of this
         Agreement;

              (b) From the expiration of the Approval Period until the Closing
         or earlier termination of this Agreement, Seller will not lease any
         space in the Improvements without Purchaser's consent.

                                       11.
                                  MISCELLANEOUS

         11.1 Notices. All notices, demands and requests which may be given or
which are required to be given by either party to the other, and any exercise of
a right of termination provided by this Agreement, shall be in writing and shall
be deemed effective either: (a) on the date personally delivered to the address
below, as evidenced by written receipt therefor, whether or not actually
received by the person to whom addressed; (b) on the third (3rd) business day
after being sent, by certified or registered mail, return receipt requested,
addressed to the intended recipient at the address specified below; or (c) on
the first (1st) business day after being deposited into the custody of a
nationally recognized overnight delivery service such as Federal Express
Corporation, Emery or Purolator, addressed to such party at the address
specified in SECTION 1.1 above (unless changed by similar notice in writing
given by the particular person whose address is to be changed).

         11.2 Real Estate Commissions. Neither Seller nor Purchaser has
authorized any broker or finder to act on Seller's or Purchaser's behalf in
connection with the sale and purchase hereunder and neither Seller nor Purchaser
has dealt with any broker or finder purporting to act on behalf of any other
party. Purchaser agrees to indemnify and hold harmless Seller from and against
any and all claims, losses, damages, costs or expenses of any kind or character
arising out of or resulting from any agreement, arrangement or understanding
alleged to have been made by Purchaser or on Purchaser's behalf with any broker
or finder in connection with this Agreement or the transaction contemplated
hereby. Seller agrees to indemnify and hold harmless Purchaser from and against
any and all claims, losses, damages, costs or expenses of any kind or character
arising out of or resulting from any agreement, arrangement or understanding
alleged to have been made by Seller or on Seller's behalf with any broker or
finder in connection with this Agreement or the transaction contemplated hereby.
Notwithstanding anything to the contrary contained herein, this SECTION 11.2
shall survive the Closing or any earlier termination of this Agreement.

         11.3 Entire Agreement. This Agreement embodies the entire agreement
between the parties relative to the subject matter hereof, and there are no oral
or written agreements between the parties, nor any representations made by
either party relative to the subject matter hereof, which are not expressly set
forth herein.

PURCHASE AND SALE AGREEMENT - Page 12
<PAGE>   13

         11.4 Amendment. This Agreement may be amended only by a written
instrument executed by the party or parties to be bound thereby.

         11.5 Headings. The captions and headings used in this Agreement are for
convenience only and do not in any way limit, amplify, or otherwise modify the
provisions of this Agreement.

         11.6 Time of Essence. Time is of the essence of this Agreement;
however, if the final date of any period which is set out in any provision of
this Agreement falls on a Saturday, Sunday or legal holiday under the laws of
the United States, the State of Texas or the State, then, in such event, the
time of such period shall be extended to the next day which is not a Saturday,
Sunday or legal holiday.

         11.7 Governing Law. This Agreement shall be governed by the laws of the
State and the laws of the United States pertaining to transactions in the State.

         11.8 Successors and Assigns; Assignment. This Agreement shall bind and
inure to the benefit of Seller and Purchaser and their respective heirs,
executors, administrators, personal and legal representatives, successors and
permitted assigns. Purchaser shall not assign Purchaser's rights under this
Agreement without the prior written consent of Seller, which consent may be
withheld absolutely; provided, however, notwithstanding the foregoing, Purchaser
may assign Purchaser's rights under this Agreement to any person, firm,
corporation or other entity related to or affiliated with Purchaser or in which
Purchaser is a partner or member. Any such assignment shall be expressly
contingent upon Seller being provided prior written notice of any such
assignment. Any assignment of this Agreement in violation of the foregoing
provisions shall be null and void.

         11.9 Invalid Provision. If any provision of this Agreement is held to
be illegal, invalid or unenforceable under present or future laws, such
provision shall be fully severable; this Agreement shall be construed and
enforced as if such illegal, invalid or unenforceable provision had never
comprised a part of this Agreement; and, the remaining provisions of this
Agreement shall remain in full force and effect and shall not be affected by
such illegal, invalid, or unenforceable provision or by its severance from this
Agreement.

         11.10 Attorneys' Fees. In the event it becomes necessary for either
party hereto to file suit to enforce this Agreement or any provision contained
herein, the party prevailing in such suit shall be entitled to recover, in
addition to all other remedies or damages, as provided herein, reasonable
attorneys' fees incurred in such suit.

         11.11 Multiple Counterparts. This Agreement may be executed in a number
of identical counterparts which, taken together, shall constitute collectively
one (1) agreement; in making proof of this Agreement, it shall not be necessary
to produce or account for more than one such counterpart with each party's
signature.

PURCHASE AND SALE AGREEMENT - Page 13
<PAGE>   14

         11.12 Exhibits. The following exhibits are attached to this Agreement
and are incorporated into this Agreement by this reference and made a part
hereof for all purposes:

               (a)  EXHIBIT A, the legal description of the Land.
               (b)  EXHIBIT B, the form of the Deed.
               (c)  EXHIBIT C, the form of the Assignment and Assumption of
                    Warranties.
               (d)  EXHIBIT D, the form of the Mockingbird Lease.

         11.13 No Recordation. Seller and Purchaser hereby acknowledge that
neither this Agreement nor any memorandum or affidavit thereof shall be recorded
of public record. Should Purchaser ever record or attempt to record this
Agreement, or a memorandum or affidavit thereof, or any other similar document,
then, notwithstanding anything herein to the contrary, said recordation or
attempt at recordation shall constitute a default by Purchaser hereunder, and,
in addition to the other remedies provided for herein, Seller shall have the
express right to terminate this Agreement by filing a notice of said termination
in the county in which the Land is located.

         11.14 DTPA WAIVER. PURCHASER HEREBY REPRESENTS AND WARRANTS TO SELLER
THAT (A) PURCHASER IS NOT IN A SIGNIFICANTLY DISPARATE BARGAINING POSITION, (B)
PURCHASER IS REPRESENTED BY LEGAL COUNSEL, AND (C) PURCHASER IS SEEKING TO
ACQUIRE THE PROPERTY, WHICH WILL NOT BE USED AS A FAMILY RESIDENCE, FOR A
CONSIDERATION THAT EXCEEDS $500,000, OR (D) (i) PURCHASER IS A BUSINESS ENTITY
THAT EITHER HAS ASSETS OF $5,000,000 OR MORE OR IS OWNED OR CONTROLLED BY A
CORPORATION OR ENTITY WITH ASSETS OF $5,000,000 OR MORE, OR (ii) PURCHASER IS A
SOPHISTICATED REAL ESTATE INVESTOR AND HAS KNOWLEDGE AND EXPERIENCE IN FINANCIAL
AND BUSINESS MATTERS THAT ENABLE IT TO EVALUATE THE MERITS AND RISKS OF THIS
TRANSACTION. PURCHASER HEREBY WAIVES TO THE FULLEST EXTENT PERMITTED BY LAW ANY
RIGHTS, REMEDIES AND BENEFITS UNDER THE TEXAS DECEPTIVE TRADE PRACTICES-CONSUMER
PROTECTION ACT (SECTIONS 17.41 AND FOLLOWING OF THE TEXAS BUSINESS AND COMMERCE
CODE) (THE "DTPA") AND ANY OTHER SIMILAR CONSUMER PROTECTION LAW, WHETHER
FEDERAL, STATE OR LOCAL. PURCHASER COVENANTS NOT TO SUE SELLER UNDER THE DTPA OR
ANY SUCH SIMILAR CONSUMER PROTECTION LAW.

         11.15 JURY WAIVER. PURCHASER AND SELLER DO HEREBY KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVE THEIR RIGHT TO A TRIAL BY JURY IN RESPECT OF
ANY LITIGATION BASED HEREON, OR ARISING OUT OF, OR UNDER OR IN CONNECTION WITH
THIS AGREEMENT, THE DOCUMENTS DELIVERED BY PURCHASER AT CLOSING OR SELLER AT
CLOSING, OR ANY COURSE OF CONDUCT, COURSE OF DEALINGS, STATEMENTS (WHETHER
VERBAL OR WRITTEN) OR ANY ACTIONS OF EITHER PARTY ARISING OUT OF OR RELATED IN
ANY MANNER WITH THIS AGREEMENT OR THE PROPERTY (INCLUDING WITHOUT LIMITATION,
ANY ACTION TO RESCIND OR CANCEL THIS AGREEMENT AND ANY CLAIMS OR DEFENSES
ASSERTING THAT THIS

PURCHASE AND SALE AGREEMENT - Page 14
<PAGE>   15

AGREEMENT WAS FRAUDULENTLY INDUCED OR IS OTHERWISE VOID OR VOIDABLE). THIS
WAIVER IS A MATERIAL INDUCEMENT FOR SELLER TO ENTER INTO AND ACCEPT THIS
AGREEMENT AND THE DOCUMENTS DELIVERED BY PURCHASER AT CLOSING AND SHALL SURVIVE
THE CLOSING OF TERMINATION OF THIS AGREEMENT.

         11.16 1031 Exchange. Purchaser and/or Seller (and/or their assigns) may
desire to have their portion of the transaction described in this Agreement
qualify as a Like-Kind Exchange of property pursuant to and in accordance with
Section 1031 of the Internal Revenue Code of 1986, as amended and the
Regulations thereunder. In this regard, Purchaser and/or Seller shall have the
option to assign this Agreement to a qualified intermediary. Purchaser and/or
Seller represent and warrant that they will use their best efforts to assist the
other party in structuring the other party's portion of the contemplated
transaction as a Like-Kind Exchange and will use reasonable efforts to cooperate
with the other party and/or its intermediary or escrow agent so long as the (i)
closing date, (ii) the representations, warranties and parties liable therefor,
and (iii) the other material terms and conditions of this Agreement are not
modified by any such assignment. Purchaser and/or Seller will indemnify, defend
and hold the other party harmless from any costs or liabilities relating to the
Like-Kind Exchange in excess of the costs or liabilities required to be paid by
the other party as set out elsewhere in this Agreement.

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

PURCHASE AND SALE AGREEMENT - Page 15
<PAGE>   16

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date set forth below.

PURCHASER:

Date of Execution
by Purchaser:

--------------------------------

---------------------------------         --------------------------------
Social Security No.                       WILLIAM D. OATES

---------------------------------         --------------------------------
Social Security No.                       MARILYN OATES

SELLER:
                                          BUSINESS RESOURCES CORPORATION,
                                          a Texas corporation
Date of Execution
by Seller:

                                          By:
---------------------------------             ----------------------------
                                          Name:
                                                --------------------------
                                          Title:
                                                 -------------------------

                                          SPECTRUM DATA, INC.,
                                          a Texas corporation
Date of Execution
by Seller:

                                          By:
---------------------------------             ----------------------------
                                          Name:
                                                --------------------------
                                          Title:
                                                 -------------------------

PURCHASE AND SALE AGREEMENT - Page 16
<PAGE>   17

The undersigned Title Company hereby acknowledges receipt of a copy of this
Agreement.

                                          AMERICAN TITLE COMPANY
Date of Execution by
Title Company:

                                          By:
---------------------------------             ----------------------------
                                          Name:
                                                --------------------------
                                          Title:  Authorized Officer

PURCHASE AND SALE AGREEMENT - Page 17
<PAGE>   18

                                   EXHIBIT A-1
                         TO PURCHASE AND SALE AGREEMENT

                    LEGAL DESCRIPTION OF MOCKINGBIRD PROPERTY

                  [SEE ATTACHED]

EXHIBIT A-1
LEGAL DESCRIPTION OF MOCKINGBIRD PROPERTY - Page 1
<PAGE>   19

                                   EXHIBIT A-2
                         TO PURCHASE AND SALE AGREEMENT

                    LEGAL DESCRIPTION OF SAN ANTONIO PROPERTY

                  Lot 7, Block 2, New City Block 14892, VIEWPOINT PARK
                  SUBDIVISION, UNIT 2, City of San Antonio, Bexar County, Texas
                  according to plat recorded in Volume 6800, Page(s) 110-111,
                  Deed and Plat Records, Bexar County, Texas.

EXHIBIT A-2
LEGAL DESCRIPTION OF SAN ANTONIO PROPERTY - Page 1

<PAGE>   20

                                   EXHIBIT B-1
                         TO PURCHASE AND SALE AGREEMENT
                              MOCKINGBIRD PROPERTY
                              SPECIAL WARRANTY DEED

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         Business Resources Corporation, a Texas corporation ("GRANTOR"), for
and in consideration of the sum of Ten and No/100 Dollars ($10.00) and other
valuable consideration, the receipt and sufficiency of which consideration are
hereby acknowledged, has Granted, Sold, and Conveyed, and by these presents does
Grant, Sell, and Convey, unto William D. Oates and Marilyn Oates ("Grantee"),
having an address of 4900 Lakeside Drive, Dallas, Texas 75205, (i) all that real
property situated in the County of Dallas, State of Texas, and more particularly
described on EXHIBIT A attached hereto and made a part hereof for all purposes,
and (ii) together with all improvements now or hereafter situated thereon, and
the lessor's or landlord's interest in all space leases or occupancy agreements
covering all or any portion of such real property and the improvements situated
thereon (collectively, the "Property").

         This Deed is made and accepted expressly subject to the matters set
forth in EXHIBIT B attached hereto and made a part hereof for all purposes.

         TO HAVE AND TO HOLD the Property, together with all and singular the
rights and appurtenances belonging in any way to the Property, unto the said
Grantee, its successors and assigns forever, and Grantor binds itself and its
successors and assigns to warrant and forever defend all and singular the
Property to Grantee, its successors and assigns against every person lawfully
claiming or to claim all or any part of the Property, by, through, or under
Grantor, but not otherwise.

         GRANTEE ACKNOWLEDGES AND AGREES THAT GRANTOR HAS NOT MADE, DOES NOT
MAKE AND SPECIFICALLY NEGATES AND DISCLAIMS ANY REPRESENTATIONS, WARRANTIES
(OTHER THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS DEED), PROMISES,
COVENANTS, AGREEMENTS OR GUARANTIES OF ANY KIND OR CHARACTER WHATSOEVER, WHETHER
EXPRESS OR IMPLIED, ORAL OR WRITTEN, PAST, PRESENT OR FUTURE, OF, AS TO,
CONCERNING OR WITH RESPECT TO (A) THE VALUE, NATURE, QUALITY OR CONDITION OF THE
PROPERTY, INCLUDING, WITHOUT LIMITATION, THE WATER, SOIL AND GEOLOGY, (B) THE
INCOME TO BE DERIVED FROM THE PROPERTY, (C) THE SUITABILITY OF THE PROPERTY FOR
ANY AND ALL ACTIVITIES AND USES WHICH GRANTEE MAY CONDUCT THEREON, (D) THE
COMPLIANCE OF OR BY THE PROPERTY OR ITS OPERATION WITH ANY

EXHIBIT B-1
SPECIAL WARRANTY DEED - Page 1
<PAGE>   21

LAWS, RULES, ORDINANCES OR REGULATIONS OF ANY APPLICABLE GOVERNMENTAL AUTHORITY
OR BODY, (E) THE HABITABILITY, MERCHANTABILITY, MARKETABILITY, PROFITABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OF THE PROPERTY, (F) THE MANNER OR QUALITY OF
THE CONSTRUCTION OR MATERIALS, IF ANY, INCORPORATED INTO THE PROPERTY, (G) THE
MANNER, QUALITY, STATE OF REPAIR OR LACK OF REPAIR OF THE PROPERTY, OR (H) ANY
OTHER MATTER WITH RESPECT TO THE PROPERTY, AND SPECIFICALLY, THAT GRANTOR HAS
NOT MADE, DOES NOT MAKE AND SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS REGARDING
COMPLIANCE WITH ANY ENVIRONMENTAL PROTECTION, POLLUTION OR LAND USE LAWS, RULES,
REGULATIONS, ORDERS OR REQUIREMENTS, INCLUDING THE EXISTENCE IN OR ON THE
PROPERTY OF HAZARDOUS MATERIALS OR SUBSTANCES. GRANTEE FURTHER ACKNOWLEDGES AND
AGREES THAT HAVING BEEN GIVEN THE OPPORTUNITY TO INSPECT THE PROPERTY, OTHER
THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS DEED, GRANTEE IS RELYING
SOLELY ON ITS OWN INVESTIGATION OF THE PROPERTY AND NOT ON ANY INFORMATION
PROVIDED OR TO BE PROVIDED BY GRANTOR AND ACCEPTS THE PROPERTY AND WAIVES ALL
OBJECTIONS OR CLAIMS AGAINST GRANTOR (INCLUDING, BUT NOT LIMITED TO, ANY RIGHT
OR CLAIM OF CONTRIBUTION) ARISING FROM OR RELATED TO THE PROPERTY OR TO ANY
HAZARDOUS MATERIALS ON THE PROPERTY. GRANTEE FURTHER ACKNOWLEDGES AND AGREES
THAT ANY INFORMATION PROVIDED OR TO BE PROVIDED WITH RESPECT TO THE PROPERTY WAS
OBTAINED FROM A VARIETY OF SOURCES AND THAT GRANTOR HAS NOT MADE ANY INDEPENDENT
INVESTIGATION OR VERIFICATION OF SUCH INFORMATION AND MAKES NO REPRESENTATIONS
AS TO THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION. OTHER THAN THE EXPRESS
REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN PURCHASE AND SALE
AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER 29, 2000 AND THE
WARRANTY OF TITLE AS SET OUT IN THIS DEED, GRANTOR IS NOT LIABLE OR BOUND IN ANY
MANNER BY ANY VERBAL OR WRITTEN STATEMENTS, REPRESENTATIONS OR INFORMATION
PERTAINING TO THE PROPERTY, OR THE OPERATION THEREOF, FURNISHED BY ANY REAL
ESTATE BROKER, AGENT, EMPLOYEE, SERVANT OR OTHER PERSON. GRANTEE FURTHER
ACKNOWLEDGES AND AGREES THAT OTHER THAN THE EXPRESS REPRESENTATIONS AND
WARRANTIES SET FORTH IN THAT CERTAIN PURCHASE AND SALE AGREEMENT BY AND BETWEEN
GRANTOR AND GRANTEE DATED SEPTEMBER 29, 2000 AND THE WARRANTY OF TITLE AS SET
OUT IN THIS DEED TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SALE OF THE
PROPERTY AS PROVIDED FOR HEREIN IS MADE ON AN "AS IS" CONDITION AND BASIS WITH
ALL FAULTS. IT IS UNDERSTOOD AND AGREED THAT THE PURCHASE PRICE FOR THE PROPERTY
HAS BEEN ADJUSTED BY PRIOR NEGOTIATION TO REFLECT THAT ALL OF THE

EXHIBIT B-1
SPECIAL WARRANTY DEED - Page 2
<PAGE>   22

PROPERTY IS SOLD BY GRANTOR AND PURCHASED BY GRANTEE SUBJECT TO THE FOREGOING.

         IN WITNESS WHEREOF, Grantor has executed this Deed as of this ______
day of ______________, 2000.

GRANTOR:                            BUSINESS RESOURCES CORPORATION,
                                    a Texas corporation

                                    By:
                                        ---------------------------------------
                                            Name:
                                                 ------------------------------
                                            Title:
                                                  -----------------------------

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         This instrument was acknowledged before me this _____ day of
______________, 2000, by _______________, _____________________ of Business
Resources Corporation, a Texas corporation, on behalf of said corporation.

(SEAL)
                                        ---------------------------------------
                                        Notary Public in and for
                                        the State of Texas

                                        ---------------------------------------
                                        Print name of notary

                                        My Commission Expires:
                                                               ----------------

EXHIBIT B-1
SPECIAL WARRANTY DEED - Page 3
<PAGE>   23

                                   EXHIBIT B-2
                         TO PURCHASE AND SALE AGREEMENT
                              SAN ANTONIO PROPERTY
                              SPECIAL WARRANTY DEED

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         Spectrum Data, Inc., a Texas corporation ("GRANTOR"), for and in
consideration of the sum of Ten and No/100 Dollars ($10.00) and other valuable
consideration, the receipt and sufficiency of which consideration are hereby
acknowledged, has Granted, Sold, and Conveyed, and by these presents does Grant,
Sell, and Convey, unto William D. Oates and Marilyn Oates ("Grantee"), having an
address of 4900 Lakeside Drive, Dallas, Texas 75205, (i) all that real property
situated in the County of Bexar, State of Texas, and more particularly described
on EXHIBIT A attached hereto and made a part hereof for all purposes, and (ii)
together with all improvements now or hereafter situated thereon, and the
lessor's or landlord's interest in all space leases or occupancy agreements
covering all or any portion of such real property and the improvements situated
thereon (collectively, the "Property").

         This Deed is made and accepted expressly subject to the matters set
forth in EXHIBIT B attached hereto and made a part hereof for all purposes.

         TO HAVE AND TO HOLD the Property, together with all and singular the
rights and appurtenances belonging in any way to the Property, unto the said
Grantee, its successors and assigns forever, and Grantor binds itself and its
successors and assigns to warrant and forever defend all and singular the
Property to Grantee, its successors and assigns against every person lawfully
claiming or to claim all or any part of the Property, by, through, or under
Grantor, but not otherwise.

         GRANTEE ACKNOWLEDGES AND AGREES THAT GRANTOR HAS NOT MADE, DOES NOT
MAKE AND SPECIFICALLY NEGATES AND DISCLAIMS ANY REPRESENTATIONS, WARRANTIES
(OTHER THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS DEED), PROMISES,
COVENANTS, AGREEMENTS OR GUARANTIES OF ANY KIND OR CHARACTER WHATSOEVER, WHETHER
EXPRESS OR IMPLIED, ORAL OR WRITTEN, PAST, PRESENT OR FUTURE, OF, AS TO,
CONCERNING OR WITH RESPECT TO (A) THE VALUE, NATURE, QUALITY OR CONDITION OF THE
PROPERTY, INCLUDING, WITHOUT LIMITATION, THE WATER, SOIL AND GEOLOGY, (B) THE
INCOME TO BE DERIVED FROM THE PROPERTY, (C) THE SUITABILITY OF THE PROPERTY FOR
ANY AND ALL ACTIVITIES AND USES WHICH GRANTEE MAY CONDUCT THEREON, (D) THE
COMPLIANCE OF OR BY THE PROPERTY OR ITS OPERATION WITH ANY

EXHIBIT B-2
SPECIAL WARRANTY DEED - Page 1

<PAGE>   24

LAWS, RULES, ORDINANCES OR REGULATIONS OF ANY APPLICABLE GOVERNMENTAL AUTHORITY
OR BODY, (E) THE HABITABILITY, MERCHANTABILITY, MARKETABILITY, PROFITABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OF THE PROPERTY, (F) THE MANNER OR QUALITY OF
THE CONSTRUCTION OR MATERIALS, IF ANY, INCORPORATED INTO THE PROPERTY, (G) THE
MANNER, QUALITY, STATE OF REPAIR OR LACK OF REPAIR OF THE PROPERTY, OR (H) ANY
OTHER MATTER WITH RESPECT TO THE PROPERTY, AND SPECIFICALLY, THAT GRANTOR HAS
NOT MADE, DOES NOT MAKE AND SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS REGARDING
COMPLIANCE WITH ANY ENVIRONMENTAL PROTECTION, POLLUTION OR LAND USE LAWS, RULES,
REGULATIONS, ORDERS OR REQUIREMENTS, INCLUDING THE EXISTENCE IN OR ON THE
PROPERTY OF HAZARDOUS MATERIALS OR SUBSTANCES. GRANTEE FURTHER ACKNOWLEDGES AND
AGREES THAT HAVING BEEN GIVEN THE OPPORTUNITY TO INSPECT THE PROPERTY, OTHER
THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS DEED, GRANTEE IS RELYING
SOLELY ON ITS OWN INVESTIGATION OF THE PROPERTY AND NOT ON ANY INFORMATION
PROVIDED OR TO BE PROVIDED BY GRANTOR AND ACCEPTS THE PROPERTY AND WAIVES ALL
OBJECTIONS OR CLAIMS AGAINST GRANTOR (INCLUDING, BUT NOT LIMITED TO, ANY RIGHT
OR CLAIM OF CONTRIBUTION) ARISING FROM OR RELATED TO THE PROPERTY OR TO ANY
HAZARDOUS MATERIALS ON THE PROPERTY. GRANTEE FURTHER ACKNOWLEDGES AND AGREES
THAT ANY INFORMATION PROVIDED OR TO BE PROVIDED WITH RESPECT TO THE PROPERTY WAS
OBTAINED FROM A VARIETY OF SOURCES AND THAT GRANTOR HAS NOT MADE ANY INDEPENDENT
INVESTIGATION OR VERIFICATION OF SUCH INFORMATION AND MAKES NO REPRESENTATIONS
AS TO THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION. OTHER THAN THE EXPRESS
REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN PURCHASE AND SALE
AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER 29, 2000 AND THE
WARRANTY OF TITLE AS SET OUT IN THIS DEED, GRANTOR IS NOT LIABLE OR BOUND IN ANY
MANNER BY ANY VERBAL OR WRITTEN STATEMENTS, REPRESENTATIONS OR INFORMATION
PERTAINING TO THE PROPERTY, OR THE OPERATION THEREOF, FURNISHED BY ANY REAL
ESTATE BROKER, AGENT, EMPLOYEE, SERVANT OR OTHER PERSON. GRANTEE FURTHER
ACKNOWLEDGES AND AGREES THAT OTHER THAN THE EXPRESS REPRESENTATIONS AND
WARRANTIES SET FORTH IN THAT CERTAIN PURCHASE AND SALE AGREEMENT BY AND BETWEEN
GRANTOR AND GRANTEE DATED SEPTEMBER 29, 2000 AND THE WARRANTY OF TITLE AS SET
OUT IN THIS DEED TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SALE OF THE
PROPERTY AS PROVIDED FOR HEREIN IS MADE ON AN "AS IS" CONDITION AND BASIS WITH
ALL FAULTS. IT IS UNDERSTOOD AND AGREED THAT THE PURCHASE PRICE FOR THE PROPERTY
HAS BEEN ADJUSTED BY PRIOR NEGOTIATION TO REFLECT THAT ALL OF THE

EXHIBIT B-2
SPECIAL WARRANTY DEED - Page 2
<PAGE>   25

PROPERTY IS SOLD BY GRANTOR AND PURCHASED BY GRANTEE SUBJECT TO THE FOREGOING.

         IN WITNESS WHEREOF, Grantor has executed this Deed as of this ______
day of ______________, 2000.

GRANTOR:                            SPECTRUM DATA, INC.,
                                    a Texas corporation

                                    By:
                                        ---------------------------------------
                                            Name:
                                                 ------------------------------
                                            Title:
                                                  -----------------------------

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         This instrument was acknowledged before me this _____ day of
______________, 2000, by _______________, _____________________ of Spectrum
Data, Inc., a Texas corporation, on behalf of said corporation.

(SEAL)
                                        ---------------------------------------
                                        Notary Public in and for
                                        the State of Texas

                                        ---------------------------------------
                                        Print name of notary

                                        My Commission Expires:
                                                               ----------------

EXHIBIT B-2
SPECIAL WARRANTY DEED - Page 3

<PAGE>   26

                                   EXHIBIT C-1
                         TO PURCHASE AND SALE AGREEMENT

                      ASSIGNMENT AND ASSUMPTION OF FIXTURES
                                 AND WARRANTIES

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         Business Resources Corporation, a Texas corporation ("GRANTOR"), for
and in consideration of the sum of Ten and No/100 Dollars ($10.00) and other
valuable consideration, to it in hand paid by William D. Oates and Marilyn Oates
("GRANTEE"), having an address of 4900 Lakeside Drive, Dallas, Texas 75205,
("GRANTEE"), the receipt and sufficiency of which are hereby acknowledged, has
Granted, Sold, Assigned, Transferred, Conveyed, and Delivered and does by these
presents Grant, Sell, Assign, Transfer, Convey and Deliver unto Grantee, all of
Grantor's rights, titles, and interests in and to the following described
properties located in, affixed to, and/or arising or used in connection with the
improved property with parking and other amenities (the "PROJECT") situated on
the land in the County of Dallas, State of Texas, more particularly described on
EXHIBIT A attached hereto and made a part hereof for all purposes (the "LAND,"
which together with the Project is sometimes hereinafter called the "PROPERTY"):

         (a) All fixtures owned by Grantor (the "FIXTURES"), and located on,
attached to, or used in connection with the operation and maintenance of the
Property; and

         (b) Any assignable warranties and guaranties relating to the Property
or any portion thereof (collectively, the "WARRANTIES").

         Grantor and Grantee hereby covenant and agree that neither this
Agreement nor any term, provision, or condition hereof may be changed, amended
or modified, and no obligation, duty or liability or any party hereby may be
released, discharged or waived, except in a writing signed by all parties
hereto.

         GRANTEE ACKNOWLEDGES AND AGREES THAT GRANTOR HAS NOT MADE, DOES NOT
MAKE AND SPECIFICALLY NEGATES AND DISCLAIMS ANY REPRESENTATIONS, WARRANTIES
(OTHER THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT), PROMISES,
COVENANTS, AGREEMENTS OR GUARANTIES OF ANY KIND OR CHARACTER WHATSOEVER, WHETHER
EXPRESS OR IMPLIED, ORAL OR WRITTEN, PAST, PRESENT OR FUTURE, OF, AS TO,
CONCERNING OR WITH RESPECT TO (A) THE VALUE, NATURE, QUALITY OR CONDITION OF THE

EXHIBIT C-1
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 1

<PAGE>   27

PROPERTY, INCLUDING, WITHOUT LIMITATION, THE WATER, SOIL AND GEOLOGY, (B) THE
INCOME TO BE DERIVED FROM THE PROPERTY, (C) THE SUITABILITY OF THE PROPERTY FOR
ANY AND ALL ACTIVITIES AND USES WHICH GRANTEE MAY CONDUCT THEREON, (D) THE
COMPLIANCE OF OR BY THE PROPERTY OR ITS OPERATION WITH ANY LAWS, RULES,
ORDINANCES OR REGULATIONS OF ANY APPLICABLE GOVERNMENTAL AUTHORITY OR BODY, (E)
THE HABITABILITY, MERCHANTABILITY, MARKETABILITY, PROFITABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OF THE PROPERTY, (F) THE MANNER OR QUALITY OF THE
CONSTRUCTION OR MATERIALS, IF ANY, INCORPORATED INTO THE PROPERTY, (G) THE
MANNER, QUALITY, STATE OF REPAIR OR LACK OF REPAIR OF THE PROPERTY, OR (H) ANY
OTHER MATTER WITH RESPECT TO THE PROPERTY, AND SPECIFICALLY, THAT GRANTOR HAS
NOT MADE, DOES NOT MAKE AND SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS REGARDING
COMPLIANCE WITH ANY ENVIRONMENTAL PROTECTION, POLLUTION OR LAND USE LAWS, RULES,
REGULATIONS, ORDERS OR REQUIREMENTS, INCLUDING THE EXISTENCE IN OR ON THE
PROPERTY OF HAZARDOUS MATERIALS OR SUBSTANCES. GRANTEE FURTHER ACKNOWLEDGES AND
AGREES THAT HAVING BEEN GIVEN THE OPPORTUNITY TO INSPECT THE PROPERTY, OTHER
THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT, GRANTEE IS
RELYING SOLELY ON ITS OWN INVESTIGATION OF THE PROPERTY AND NOT ON ANY
INFORMATION PROVIDED OR TO BE PROVIDED BY GRANTOR AND ACCEPTS THE PROPERTY AND
WAIVES ALL OBJECTIONS OR CLAIMS AGAINST GRANTOR (INCLUDING, BUT NOT LIMITED TO,
ANY RIGHT OR CLAIM OF CONTRIBUTION) ARISING FROM OR RELATED TO THE PROPERTY OR
TO ANY HAZARDOUS MATERIALS ON THE PROPERTY. GRANTEE FURTHER ACKNOWLEDGES AND
AGREES THAT ANY INFORMATION PROVIDED OR TO BE PROVIDED WITH RESPECT TO THE
PROPERTY WAS OBTAINED FROM A VARIETY OF SOURCES AND THAT GRANTOR HAS NOT MADE
ANY INDEPENDENT INVESTIGATION OR VERIFICATION OF SUCH INFORMATION AND MAKES NO
REPRESENTATIONS AS TO THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION. OTHER
THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT, GRANTOR IS NOT
LIABLE OR BOUND IN ANY MANNER BY ANY VERBAL OR WRITTEN STATEMENTS,
REPRESENTATIONS OR INFORMATION PERTAINING TO THE PROPERTY, OR THE OPERATION
THEREOF, FURNISHED BY ANY REAL ESTATE BROKER, AGENT, EMPLOYEE, SERVANT OR OTHER
PERSON. GRANTEE FURTHER ACKNOWLEDGES AND AGREES THAT OTHER THAN THE EXPRESS
REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN PURCHASE AND SALE
AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER 29, 2000 AND THE
WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT TO THE MAXIMUM

EXHIBIT C-1
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 2

<PAGE>   28

EXTENT PERMITTED BY LAW, THE SALE OF THE PROPERTY AS PROVIDED FOR HEREIN IS MADE
ON AN "AS IS" CONDITION AND BASIS WITH ALL FAULTS. IT IS UNDERSTOOD AND AGREED
THAT THE PURCHASE PRICE FOR THE PROPERTY HAS BEEN ADJUSTED BY PRIOR NEGOTIATION
TO REFLECT THAT ALL OF THE PROPERTY IS SOLD BY GRANTOR AND PURCHASED BY GRANTEE
SUBJECT TO THE FOREGOING.

                  [REMAINDER OF PAGE LEFT INTENTIONALLY BLANK]

EXHIBIT C-1
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 3

<PAGE>   29

         IN WITNESS WHEREOF, Grantor and Grantee have executed this Assignment
of Fixtures and Warranties on _____________, 2000 to be effective as of the
_____ day of __________________, 2000.

GRANTOR:                            BUSINESS RESOURCES CORPORATION,
                                    a Texas corporation

                                    By:
                                        ---------------------------------------
                                            Name:
                                                 ------------------------------
                                            Title:
                                                  -----------------------------

GRANTEE:

                                    -------------------------------------------
                                    WILLIAM D. OATES

                                    -------------------------------------------
                                    MARILYN OATES

EXHIBIT C-1
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 4

<PAGE>   30

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         This instrument was acknowledged before me this _____ day of
______________, 2000, by _______________, _____________________ of Business
Resources Corporation, a Texas corporation, on behalf of said corporation.

(SEAL)
                                        ---------------------------------------
                                        Notary Public in and for
                                        the State of Texas

                                        ---------------------------------------
                                        Print name of notary

                                        My Commission Expires:
                                                               ----------------

EXHIBIT C-1
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 5

<PAGE>   31

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         This instrument was acknowledged before me this _____ day of
______________, 2000, by William D. Oates and Marilyn Oates.

(SEAL)
                                        ---------------------------------------
                                        Notary Public in and for
                                        the State of Texas

                                        ---------------------------------------
                                        Print name of notary

                                        My Commission Expires:
                                                               ----------------

EXHIBIT C-1
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 6

<PAGE>   32

                                   EXHIBIT C-2
                         TO PURCHASE AND SALE AGREEMENT

                      ASSIGNMENT AND ASSUMPTION OF FIXTURES
                                 AND WARRANTIES

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         Spectrum Data, Inc., a Texas corporation ("GRANTOR"), for and in
consideration of the sum of Ten and No/100 Dollars ($10.00) and other valuable
consideration, to it in hand paid by William D. Oates and Marilyn Oates
("Grantee"), having an address of 4900 Lakeside Drive, Dallas, Texas 75205,
("GRANTEE"), the receipt and sufficiency of which are hereby acknowledged, has
Granted, Sold, Assigned, Transferred, Conveyed, and Delivered and does by these
presents Grant, Sell, Assign, Transfer, Convey and Deliver unto Grantee, all of
Grantor's rights, titles, and interests in and to the following described
properties located in, affixed to, and/or arising or used in connection with the
improved property with parking and other amenities (the "PROJECT") situated on
the land in the County of Dallas, State of Texas, more particularly described on
EXHIBIT A attached hereto and made a part hereof for all purposes (the "LAND,"
which together with the Project is sometimes hereinafter called the "PROPERTY"):

         (a) All fixtures owned by Grantor (the "FIXTURES"), and located on,
attached to, or used in connection with the operation and maintenance of the
Property; and

         (b) Any assignable warranties and guaranties relating to the Property
or any portion thereof (collectively, the "WARRANTIES").

         Grantor and Grantee hereby covenant and agree that neither this
Agreement nor any term, provision, or condition hereof may be changed, amended
or modified, and no obligation, duty or liability or any party hereby may be
released, discharged or waived, except in a writing signed by all parties
hereto.

         GRANTEE ACKNOWLEDGES AND AGREES THAT GRANTOR HAS NOT MADE, DOES NOT
MAKE AND SPECIFICALLY NEGATES AND DISCLAIMS ANY REPRESENTATIONS, WARRANTIES
(OTHER THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT), PROMISES,
COVENANTS, AGREEMENTS OR GUARANTIES OF ANY KIND OR CHARACTER WHATSOEVER, WHETHER
EXPRESS OR IMPLIED, ORAL OR WRITTEN, PAST, PRESENT OR FUTURE, OF, AS TO,
CONCERNING OR WITH RESPECT TO (A) THE VALUE, NATURE, QUALITY OR CONDITION OF THE

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 1

<PAGE>   33

PROPERTY, INCLUDING, WITHOUT LIMITATION, THE WATER, SOIL AND GEOLOGY, (B) THE
INCOME TO BE DERIVED FROM THE PROPERTY, (C) THE SUITABILITY OF THE PROPERTY FOR
ANY AND ALL ACTIVITIES AND USES WHICH GRANTEE MAY CONDUCT THEREON, (D) THE
COMPLIANCE OF OR BY THE PROPERTY OR ITS OPERATION WITH ANY LAWS, RULES,
ORDINANCES OR REGULATIONS OF ANY APPLICABLE GOVERNMENTAL AUTHORITY OR BODY, (E)
THE HABITABILITY, MERCHANTABILITY, MARKETABILITY, PROFITABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OF THE PROPERTY, (F) THE MANNER OR QUALITY OF THE
CONSTRUCTION OR MATERIALS, IF ANY, INCORPORATED INTO THE PROPERTY, (G) THE
MANNER, QUALITY, STATE OF REPAIR OR LACK OF REPAIR OF THE PROPERTY, OR (H) ANY
OTHER MATTER WITH RESPECT TO THE PROPERTY, AND SPECIFICALLY, THAT GRANTOR HAS
NOT MADE, DOES NOT MAKE AND SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS REGARDING
COMPLIANCE WITH ANY ENVIRONMENTAL PROTECTION, POLLUTION OR LAND USE LAWS, RULES,
REGULATIONS, ORDERS OR REQUIREMENTS, INCLUDING THE EXISTENCE IN OR ON THE
PROPERTY OF HAZARDOUS MATERIALS OR SUBSTANCES. GRANTEE FURTHER ACKNOWLEDGES AND
AGREES THAT HAVING BEEN GIVEN THE OPPORTUNITY TO INSPECT THE PROPERTY, OTHER
THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT, GRANTEE IS
RELYING SOLELY ON ITS OWN INVESTIGATION OF THE PROPERTY AND NOT ON ANY
INFORMATION PROVIDED OR TO BE PROVIDED BY GRANTOR AND ACCEPTS THE PROPERTY AND
WAIVES ALL OBJECTIONS OR CLAIMS AGAINST GRANTOR (INCLUDING, BUT NOT LIMITED TO,
ANY RIGHT OR CLAIM OF CONTRIBUTION) ARISING FROM OR RELATED TO THE PROPERTY OR
TO ANY HAZARDOUS MATERIALS ON THE PROPERTY. GRANTEE FURTHER ACKNOWLEDGES AND
AGREES THAT ANY INFORMATION PROVIDED OR TO BE PROVIDED WITH RESPECT TO THE
PROPERTY WAS OBTAINED FROM A VARIETY OF SOURCES AND THAT GRANTOR HAS NOT MADE
ANY INDEPENDENT INVESTIGATION OR VERIFICATION OF SUCH INFORMATION AND MAKES NO
REPRESENTATIONS AS TO THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION. OTHER
THAN THE EXPRESS REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN
PURCHASE AND SALE AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER
29, 2000 AND THE WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT, GRANTOR IS NOT
LIABLE OR BOUND IN ANY MANNER BY ANY VERBAL OR WRITTEN STATEMENTS,
REPRESENTATIONS OR INFORMATION PERTAINING TO THE PROPERTY, OR THE OPERATION
THEREOF, FURNISHED BY ANY REAL ESTATE BROKER, AGENT, EMPLOYEE, SERVANT OR OTHER
PERSON. GRANTEE FURTHER ACKNOWLEDGES AND AGREES THAT OTHER THAN THE EXPRESS
REPRESENTATIONS AND WARRANTIES SET FORTH IN THAT CERTAIN PURCHASE AND SALE
AGREEMENT BY AND BETWEEN GRANTOR AND GRANTEE DATED SEPTEMBER 29, 2000 AND THE
WARRANTY OF TITLE AS SET OUT IN THIS ASSIGNMENT TO THE MAXIMUM

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 2

<PAGE>   34

EXTENT PERMITTED BY LAW, THE SALE OF THE PROPERTY AS PROVIDED FOR HEREIN IS MADE
ON AN "AS IS" CONDITION AND BASIS WITH ALL FAULTS. IT IS UNDERSTOOD AND AGREED
THAT THE PURCHASE PRICE FOR THE PROPERTY HAS BEEN ADJUSTED BY PRIOR NEGOTIATION
TO REFLECT THAT ALL OF THE PROPERTY IS SOLD BY GRANTOR AND PURCHASED BY GRANTEE
SUBJECT TO THE FOREGOING.

                  [REMAINDER OF PAGE LEFT INTENTIONALLY BLANK]

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 3

<PAGE>   35

         IN WITNESS WHEREOF, Grantor and Grantee have executed this Assignment
of Fixtures and Warranties on _____________, 2000 to be effective as of the
_____ day of __________________, 2000.

GRANTOR:                            SPECTRUM DATA, INC.,
                                    a Texas corporation

                                    By:
                                        ---------------------------------------
                                            Name:
                                                 ------------------------------
                                            Title:
                                                  -----------------------------

GRANTEE:

                                    -------------------------------------------
                                    WILLIAM D. OATES

                                    -------------------------------------------
                                    MARILYN OATES

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 4
<PAGE>   36

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         This instrument was acknowledged before me this _____ day of
______________, 2000, by _______________, _____________________ of Spectrum
Data, Inc., a Texas corporation, on behalf of said corporation.

(SEAL)
                                        ---------------------------------------
                                        Notary Public in and for
                                        the State of Texas

                                        ---------------------------------------
                                        Print name of notary

                                        My Commission Expires:
                                                               ----------------

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 5

<PAGE>   37

STATE OF TEXAS              )
                            )
COUNTY OF DALLAS            )

         This instrument was acknowledged before me this _____ day of
______________, 2000, by William D. Oates and Marilyn Oates.

(SEAL)
                                        ---------------------------------------
                                        Notary Public in and for
                                        the State of Texas

                                        ---------------------------------------
                                        Print name of notary

                                        My Commission Expires:
                                                               ----------------

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 6

<PAGE>   38

EXHIBIT C-2
ASSIGNMENT OF FIXTURES
AND WARRANTIES - Page 7

<PAGE>   39

                                    EXHIBIT D

                     LEASE AGREEMENT - MOCKINGBIRD PROPERTY
                   BETWEEN WILLIAM D. OATES AND MARILYN OATES
                                       AND
                          AND TYLER TECHNOLOGIES, INC.

EXHIBIT D
LEASE AGREEMENT - MOCKINGBIRD PROPERTY - Page 1

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