Document:

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                                                                     EXHIBIT 4.3

                      AMENDMENT TO STOCK PURCHASE AGREEMENT

         THIS AMENDMENT TO STOCK PURCHASE AGREEMENT, dated June 30, 1998, is
made and entered into between I3S FUNDING I, LLC, a North Carolina limited
liability company (the "Purchaser"); I 3S, INC., a Texas corporation (the
"Company"); JAMES R. PRICE, GARY A. DOBBINS, CLAY C. SCOTT, JR., CHARLES BO
PRICE and GEORGE VENNER (the "Shareholders").

                              W I T N E S S E T H:

         WHEREAS, the parties executed a Stock Purchase Agreement dated as of
March 31, 1998 (the "Stock Purchase Agreement") pursuant to which Purchaser
purchased 134,029 shares of the Company's Class B Common Stock, no par value per
share; and

         WHEREAS, such purchase was pursuant to a plan (the "Plan") that had
been approved by the Company's Board of Directors to issue to Purchaser and
others, for the aggregate amount of $5,000,000, shares of the Company's common
stock representing twenty percent (20%) of all outstanding common stock of the
Company on a fully diluted basis (i.e. calculated as if all outstanding options,
warrants or other rights to acquire or purchase shares of the Company's common
stock, had been exercised); and

         WHEREAS, in issuing 134,029 shares to Purchaser pursuant to the Stock
Purchase Agreement, the parties erroneously failed to take into account the
additional shares that would be issued for the remaining $3,500,000 that would
be paid pursuant to the Plan; and

         WHEREAS, the parties also have been in dispute as to the options,
warrants or other rights to acquire or purchase shares that were to be included
in determining the number of shares that were to be considered in such 20%
calculation; and

         WHEREAS, the parties desire to correct said error and resolve their
dispute so that the aggregate amount of common shares issued to Purchaser for
its $1,500,000 payment on March 31, 1998 represents thirty percent (30%) of the
shares that will have been issued to Purchaser and others in 1998 for the
aggregate amount of $5,000,000.

         WHEREAS, on May 22, 1998 the Company declared a 5 for 1 split of its
outstanding stock (the "Stock Split").

         NOW, THEREFORE, in consideration of the foregoing and the mutual
agreements, representations and warranties contained in this Amendment and in
the Stock Purchase Agreement, and in consideration of the covenants of Purchaser
under the stock purchase agreements and the voting trust agreement to be
executed in connection with the issuance of the Company's Common Stock for the
remaining $3,500,000 that is to be paid by Spotswood Capital, LLC and Blue Ridge
Investors Limited Partnership, the parties hereto agree as follows:

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         1. Replacement Stock Certificate. To correct the error and resolve the
parties' dispute as described above, the Company shall issue to Purchaser an
additional 15,971 (calculated before giving effect to the Stock Split) shares of
the Company's Class B Common Stock. To evidence such issuance, as well as the
Stock Split, Purchaser shall return to the Company its certificate for 134,029
shares of the Company's Class B Common Stock, and the Company shall issue to
Purchaser a replacement certificate representing 750,000 shares of the Company's
Class B Common Stock.

         2. Amendments to Stock Purchase Agreement. To reflect the additional
15,971 shares being issued to Purchaser, as well as the Stock Split, the Stock
Purchase Agreement is hereby amended as follows:

                  (a) The reference to "134,029" in the recital of the Stock
Purchase Agreement, and the reference to "One Hundred Thirty Four Thousand
Twenty Nine (134,029)" in Section 1.a. of the Stock Purchase Agreement, are
hereby deleted and replaced with "750,000"; and

                  (b) The references to "$3.529" in Sections 2.g.i. and 2.g.v.
of the Stock Purchase Agreement are hereby deleted and replaced with
"($0.6927)".

         3. Miscellaneous. Except as expressly amended by this Amendment, all
the terms and provisions of the Stock Purchase Agreement shall remain unmodified
and in full force and effect. This Amendment, together with the Stock Purchase
Agreement, represents the entire agreement of the parties with respect to the
matters addressed herein, and may not be modified or amended except by the
written agreement of all parties. This Amendment may be executed simultaneously
in one or more counterparts, each of which shall be deemed an original, but all
of which together shall constitute one and the same instrument. This Amendment
shall be governed by and construed in accordance with the laws of the State of
North Carolina.

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         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their duly authorized representatives on the date first above
written.

ATTEST:                                     I 3S, INC.

     /s/ illegible                          By:  /s/ James R. Price
-------------------------------                ---------------------------------
                                               James R. Price, President

                                   I3S FUNDING I, L.L.C.

                                   By:  GENEVA ASSOCIATES, L.L.C., Manager

                                   By:  /s/ Tracy Scott Turner
                                      ------------------------------------------
                                      Tracy Scott Turner, Member-Manager

         The Shareholders execute this Amendment solely for the purpose of
consenting to the terms hereof and waiving any and all preemptive rights with
respect to the issuance of the shares of the Company's Class B Common Stock as
contemplated hereunder, which rights are hereby waived.

                                       /s/ James R. Price
                                     ------------------------------------------
                                     James R. Price

                                       /s/ Gary A. Dobbins
                                     ------------------------------------------
                                     Gary A. Dobbins

                                       /s/ Clay C. Scott, Jr.
                                     ------------------------------------------
                                     Clay C. Scott, Jr.

                                       /s/ Charles Bo Price
                                     ------------------------------------------
                                     Charles Bo Price

                                       /s/ George Venner
                                     ------------------------------------------
                                     George Venner

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                                                                     EXHIBIT 4.4

                            STOCK PURCHASE AGREEMENT

     THIS STOCK PURCHASE AGREEMENT (the "Agreement"), dated as of July 10, 1998,
is made and entered into between SPOTSWOOD CAPITAL, LLC, a North Carolina
limited liability company (the "Purchaser"); I 3S, INC., a Texas corporation
(the "Company"); JAMES R. PRICE, GARY A. DOBBINS, CLAY C. SCOTT, JR., CHARLES BO
PRICE, GEORGE VENNER, and I3S FUNDING I, L.L.C. ("Funding") the sole existing
holders of capital stock of the Company (the "Shareholders") who execute this
Agreement solely for the purpose of agreeing to the provisions of Section 2
hereof and waiving any and all preemptive rights with respect to the issuance of
the Class C Shares hereunder.

     Purchaser wishes to purchase from the Company, and the Company wishes to
sell to Purchaser, 183,732 shares of the Company's Class C Common Stock, no par
value per share (the "Class C Shares"), on the terms and conditions set forth
herein.

     NOW, THEREFORE, in consideration of the mutual agreements, representations
and warranties contained in this Agreement, the parties hereto agree as follows:

1. SALE AND PURCHASE OF CLASS C SHARES; THE CLOSING

     a. Sale and Purchase of Class C Shares. Subject to the terms and conditions
set forth in this Agreement, at the Closing provided for in paragraph 1.d.
below, the Company shall sell to Purchaser, and Purchaser shall buy from the
Company, One Hundred Eighty Three Thousand Seven Hundred Thirty Two (183,732)
Class C Common Shares for an aggregate purchase price of One Million Seven
Hundred Fifty Thousand Dollars ($1,750,000). The Class C Shares shall represent
at the time of issuance 7.0% of all outstanding common stock of the Company on a
fully diluted basis

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(i.e. calculated as if all outstanding options, warrants or other rights to
acquire or purchase shares of the Company's common stock, had been exercised).

     b. Payment of Purchase Price. At the Closing, Purchaser shall deliver the
sum of One Million Seven Hundred Fifty Thousand Dollars ($1,750,000) to the
Company by way of a wire transfer in complete payment for the Class C Shares.

     c. Delivery of Stock Certificate. In consideration for Purchaser's payment
for the Class C Shares, at the Closing the Company shall deliver to Purchaser a
stock certificate representing the Class C Shares.

     d. The Closing. The closing of the sale and purchase of the Class C Shares
contemplated hereby (the "Closing"), shall take place at the offices of the
Company, 1330 River Bend, Suite 600, Dallas, Texas, at 10:00 a.m. on June 30,
1998, or such other date and time as Purchaser and the Company shall mutually
agree in writing (the "Closing Date"). At the Closing, the Company
simultaneously shall sell 183,732 shares of Class C Common Stock to Blue Ridge
Investors Limited Partnership ("Blue Ridge") for $1,750,000 on substantially the
same terms and conditions that are set forth herein with respect to the sale of
the Class C Shares to Purchaser.

2. PREFERENCES, LIMITATIONS AND RELATIVE RIGHTS OF THE CLASS C SHARES

     a. Voting. Except as provided in Section 2.i below, the Class C Shares
shall be entitled to vote on all matters voted on at a shareholders' meeting,
with the same voting rights per share as are granted to the Company's Class A
Common Stock and Class B Common Stock. Purchaser acknowledges that 56,079 of the
Class C Shares shall be transferred to a voting trust pursuant to a Voting Trust
Agreement to be executed and delivered at Closing substantially in the form of
Exhibit A attached hereto.

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     b. Preemptive Rights. Until such time as a Purchaser Approved Offering (as
defined below) has been consummated or Purchaser has otherwise sold all of its
Class C Shares or other equity interests in the Company, Purchaser shall have
preemptive rights with regard to any future issuances of common stock of the
Company (other than an issuance of common stock pursuant to currently
outstanding options disclosed hereunder) permitting Purchaser to purchase
additional common shares pro rata at the same price and on the same terms and
conditions of such issuance. For purposes of this Agreement, a Purchaser
Approved Offering shall mean the consummation of an underwritten public offering
of common stock of the Company on the New York Stock Exchange, the American
Stock Exchange, or The Nasdaq Stock Market, Inc. pursuant to a registration
statement filed with the Securities and Exchange Commission under the Securities
Act of 1933, as amended (the "1933 Act"), covering the offer and sale of common
stock of the Company to the public at a price resulting in gross proceeds from
such sale to the Company (before deduction of underwriting discounts and
expenses of sale) of not less than $50,000,000.

     c. Right of First Refusal. Except in the event of and after the
consummation of a Purchaser Approved Offering , and except for gifts, charitable
donations or sales in each case representing less than One Percent (1%) of the
Company's outstanding common stock in the aggregate, no shareholder shall be
permitted to dispose of any shares of the Company's common stock unless such
shares shall have been offered for sale in writing first to the Company and then
to the other shareholders of the Company pro rata. In the event a shareholder
desires to transfer any common shares, the shareholder desiring to make such
transfer (the "Transferring Shareholder") shall deliver written notice (the
"Offer Notice") to the Company and to all other shareholders at least sixty (60)
days prior to the proposed transfer. The Offer Notice will disclose in
reasonable detail the

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proposed number of shares to be transferred, the proposed transferee and the
proposed price, terms and conditions of the transfer.

         i. Upon receipt of the Offer Notice, the Company shall have the option
(the "Company's Option") for a period of thirty (30) days to purchase or
otherwise acquire all or part of the shares described in the Offer Notice for an
aggregate amount (such aggregate amount being hereinafter referred to as the
"Option Price") equal to the bona fide purchase price to be paid by the proposed
purchaser as described in the Offer Notice (which amount shall be zero if the
proposed transfer would take the form of a gift or other gratuitous transfer).
The Company shall notify in writing all then current shareholders as to whether
it will exercise, partially exercise or not exercise the Company's Option before
the expiration of the Company's Option.

         ii. In the event that the Company does not elect to fully exercise the
Company's Option within thirty (30) days after receipt of the Offer Notice, the
remaining shareholders shall have the option (each a "Shareholder's Option") for
a period of ten (10) days from the earlier of (i) their receipt of written
notice from the Company of its decision not to exercise or to only partially
exercise the Company's Option, or (ii) the expiration of the Company's Option
(the "Other Shareholder Election Period"), to purchase or otherwise acquire all
or part of the remaining shares which the Company does not choose to purchase
pursuant to the Company's Option, in proportion to their respective ownership of
shares which, for purposes of such determination, shall include without
duplication all outstanding options, warrants or other rights owned by such
shareholders that are convertible into shares as of the date of such notice from
the Company (or the expiration of the Company's Option), for an amount equal to
the applicable portion of the Option Price. Each shareholder shall notify in
writing all then current shareholders as to whether such shareholder will

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exercise, partially exercise or not exercise the shareholder's option before the
expiration of the Other Shareholder Election Period.

         iii. For a period of ten (10) days from the earlier of (i) the receipt
by the other shareholders of a written notice from a shareholder that it does
not want to exercise its option or will only partially exercise its option, or
(ii) the expiration of the Other Shareholder Election Period, the other
shareholders shall have the right to purchase or otherwise acquire such
shareholder's portion of the shares described in the Offer Notice in proportion
to their respective ownership of shares (determined as described in Section
2.c.ii. above).

         iv. If shares of a Transferring Shareholder remain unsold after
compliance with the procedures set forth in this Section 2.c., the Company shall
have the final option for ten (10) days to purchase or otherwise acquire all of
the remaining shares proposed to be transferred for an amount equal to the
applicable portion of the Option Price. If, however, the Company and the other
shareholders do not individually or collectively elect to purchase all of the
shares being offered, the Transferring Shareholder may, within thirty (30) days
after the expiration of the Other Shareholder Election Period (subject to the
provisions of Section 2.c.vi. below), transfer all of the shares specified in
the Offer Notice to the transferee identified in the notice at the price and
terms stated in the Offer Notice. Any shares so transferred thereupon shall
continue to be subject to this Agreement, and the transferee shall have the
rights and obligations set forth in this Agreement hereunder with respect to
such shares. If the Transferring Shareholder fails to consummate such transfer
within the thirty-day period after the expiration of the Other Shareholder
Election Period, any transfer of the shares thereafter shall again be subject to
the provisions of this Section 2.c.

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         v. Unless otherwise agreed in writing, signed by the person against
whom such writing is sought to be enforced, the closing of any acquisition of
common shares hereunder pursuant to the Company's Option or a Shareholder's
Option shall take place within forty-five (45) days of an applicable option's
exercise. If any such closing does not take place within such forty-five day
period, then the shares that were to be acquired shall be offered in accordance
with this Section 2.c. as though the applicable option had not been exercised.

         vi. Notwithstanding the foregoing provisions of this Section 2.c., the
following shall apply in the event of any Involuntary Transfer of common shares.
An "Involuntary Transfer" shall mean any transfer caused by the death of a
shareholder, as well as any transfer, proceeding or action by, through, as a
consequence of, or in which a shareholder shall be deprived or divested of any
right, title or interest in or to any of the common stock of the Company,
including, without limitation, any seizure under levy, attachment or execution,
any transfer in connection with bankruptcy (whether pursuant to a filing of a
voluntary or an involuntary petition under the United States Bankruptcy Code, or
any amendments, modifications, revisions or successors statutes thereto) or
other court proceeding to a debtor-in-possession, trustee in bankruptcy or
receiver or other officer or agency, any transfer to a state or to a public
officer or agency pursuant to any statute pertaining to escheat or abandoned
property, any transfer pursuant to a separation agreement, equitable
distribution agreement or community property distribution agreement, or the
entry of a final court order in a divorce proceeding from which there is no
further right of appeal.

         In the event of any Involuntary Transfer, the Company shall give
written notice to each shareholder upon the occurrence, or prospective
occurrence, of such Involuntary Transfer within fifteen (15) days of the date on
which the Company is notified of the occurrence or prospective

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occurrence of such Involuntary Transfer. The foregoing provisions of this
Section 2.c. then shall apply, except (i) the Option Price shall be the value of
the Company as determined by a qualified representative of a nationally
recognized investment banking or accounting firm mutually agreeable to the
Company, Purchaser, and the shareholder who made, or may make, the Involuntary
Transfer, multiplied by the percentage of all equity interests in the Company
that is then represented by the shares that are the subject of the Involuntary
Transfer, such independent appraised value to take into account the earnings and
book value of the Company, and (ii) the appraiser shall deliver written notice
of such valuation to the Company and to all other shareholders promptly
following his completion of such valuation, and such written notice shall be
considered the Option Notice for purposes of this Section 2.c. The cost of the
appraisal shall be shared equally by the Company and the shareholder who made,
or may make, the Involuntary Transfer.

         At the closing of any purchase by the Company or any shareholders
pursuant to this Section 2.c.vi., the involuntary transferee shall deliver
certificates representing the common shares being purchased, duly endorsed for
transfer and accompanied by all requisite stock transfer taxes, and such shares
shall be conveyed free and clear of any liens, claims, options, charges,
encumbrances or rights of others arising through the action or inaction of the
involuntary transferee, and the involuntary transferee shall so represent and
warrant. The involuntary transferee shall further represent and warrant that he
is the beneficial owner of such shares.

         In the event the provisions of this Section 2.c.vi. shall be held to be
unenforceable with respect to any particular Involuntary Transfer of common
stock, or if all of the shares subject to the Involuntary Transfer are not
purchased by the Company and/or one or more shareholders, and if the involuntary
transferee subsequently desires to transfer such common stock, the involuntary
transferee

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shall be deemed to be a "Transferring Shareholder" under Section 2.c. and shall
be bound by the other provisions of this Agreement.

         vii. Notwithstanding anything to the contrary contained in this Section
2.c., no shareholder shall transfer any common shares at any time if such action
would constitute a violation of any federal or state securities laws or a breach
of the conditions to any exemption from registration of the shares under any
such laws or a breach of any undertaking or agreement of such shareholder
entered into pursuant to such laws or in connection with obtaining an exemption
thereunder. Each shareholder agrees that any shares purchased or acquired by
such shareholder shall bear appropriate legends restricting the sale or other
transfer of such shares in accordance with applicable federal and state
securities laws, in addition to a legend referring to the restrictions set forth
in this Agreement.

     d. Rights With Regard to Registration of Purchaser's Common Shares.

         i. In the event that the Company registers any of its common stock or
other securities under federal and state securities laws for a primary offering
or a secondary offering by the Company or any of the officers or directors of
the Company who are also shareholders (a "Management Shareholder"), Purchaser
shall have piggy-back registration rights to include all common stock then owned
by Purchaser (collectively, the "Purchaser's Common Shares"), in any such
offering on a pro rata basis. The Company shall give Purchaser notice of such
proposed registration at least thirty (30) days prior to the filing of a
registration statement. Upon the written request of Purchaser delivered to the
Company within twenty (20) days after the receipt of the notice from the
Company, which request shall state the number of Purchaser's Common Shares that
Purchaser wishes to sell or distribute publicly under the registration statement
proposed to be filed by the Company, the Company shall use its best efforts to
register Purchaser's Common Shares, and

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to cause such registration to become and remain effective so long as the Company
keeps such registration effective as to any other common stock of the Company.
Purchaser's Common Shares registered pursuant to this Section 2.d.i. must be
purchased and offered for sale by a bona fide underwriter or underwriters in a
public offering on a firm commitment basis. The Company's managing underwriter
shall have the right to limit in whole or in part the total number of
Purchaser's Common Shares to be sold hereunder, so long as such limitation is
applied on a pro rata basis with respect to all shares proposed or requested to
be registered by the Company and all shareholders. The expenses of any such
offering shall be borne by the Company, except for Purchaser's pro rata share of
any underwriter's discount or sales agent's commission.

         ii. If, in connection with any registration under this Section 2.d, any
of the common shares of Company stock require registration or qualification
under the securities or "blue sky" laws of any state, or the approval of any
state governmental official or authority, the Company shall take all requisite
action and use its best efforts to cause such shares to be duly registered,
qualified or approved as may be required. If any shares meet the criteria for
listing on any exchange on which such stock of the Company is then listed, the
Company shall apply for and use its best efforts to obtain a listing of all such
shares on such exchange.

         iii. Except as provided in Section 2.d.i. above, the Company shall pay
all of the expenses in connection with the registration of any shares of Company
stock, including, without limitation, the costs of preparing, printing and
filing the registration statement in compliance with the 1933 Act, the fees and
expenses of counsel and accountants for the Company, Management Shareholders and
Purchaser for qualifying the offering under the securities or "blue sky" laws
and regulations of the state in which the offering is qualified.

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     e. Sale of the Company.

         i. At any time after April 4, 2000, and before the consummation of a
Purchaser Approved Offering, if a bona fide offer is made by any person (other
than Purchaser, or any person or entity related to or affiliated with
Purchaser), to purchase all or substantially all of the assets or shares of
stock of the Company, and Funding gives the Company written notice that it
desires such offer to be accepted, the Company and its shareholders shall either
accept the offer and consummate the sale on the terms and conditions of the
offer (in which case, if the transaction is a stock sale or merger, Purchaser
also shall sell all of its equity interests in the Company on those terms and
conditions), or the Company shall acquire all the equity interests owned by
Purchaser and Funding in the Company on the same terms and conditions as the
offer; provided, however, that if such offer is made prior to April 4, 2002, the
Company shall have no such obligation unless the total consideration of such
offer is at least $50,000,000.

     In determining the total consideration for purposes of the foregoing, any
deferred payment shall be discounted to present value at a discount rate of
eight percent (8%) per annum. If the total consideration set forth in the offer
includes anything other than cash and/or marketable securities (the "Non-Cash
Consideration") then the Company, at its option, may acquire Purchaser's equity
interests for the product of (a) either (i) the Non-Cash Consideration specified
or (ii) cash in the amount of the fair market value of the total consideration
set forth in the offer, multiplied by (b) the percentage of all outstanding
equity interests of the Company that then is owned by Purchaser. Such fair
market value shall be determined pursuant to the terms of the Stock Purchase
Agreements dated April 4, 1997 and March 31, 1998 by and among the Company,
Funding and the other stockholders of the Company (the "Funding Purchase
Agreements").

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     If the offer contemplates an asset sale, the Company may acquire
Purchaser's equity interests for cash equal to the product of (a) the after-tax
value to the Company of the consideration set forth in the offer multiplied by
(b) the percentage of all outstanding equity interests of the Company that is
then owned by Purchaser. If the Company decides to acquire Purchaser's and
Funding's equity interests, the Company shall acquire Purchaser's and Funding's
equity interests for cash within ninety (90) days from the date of Funding's
written notice.

         ii. At any time before the consummation of a Purchaser Approved
Offering, if any assets or stock of the Company is sold for any reason, or if
the Company is merged or consolidated, then the following payments (the
"Management Shareholder Payments") to the Management Shareholders in connection
with such sale, merger or consolidation shall be deemed, for purposes of this
Agreement, as part of the total consideration to be paid for the Company so that
Purchaser shall be entitled to receive from the Company, pari passu with the
rights of holders of the Company's Class B Common Stock and all other holders of
the Company's Class C Common Stock to be paid with respect to the Management
Shareholder Payments, and before any distribution to shareholders, a priority
distribution equal to the product of (1) the sum of (a) all payments made to a
Management Shareholder in consideration of any covenant not to compete or
consulting agreement, plus (b) the component of any compensation to a Management
Shareholder for employment services that is in excess of the prevailing industry
average compensation, paid by companies that are similar to the company that
will be making the payments to the Management Shareholder, for the management
responsibilities actually to be performed by the Management Shareholder, as such
average compensation is mutually agreed between the Company, the Management
Shareholder and Funding, or if they cannot agree, then as determined by a
current survey of total compensation

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conducted by a qualified representative of a nationally recognized investment
banking or accounting firm mutually agreeable to the Company, the Management
Shareholder, and Funding, multiplied by (2) the percentage of all equity
interests in the Company that is then owned by Purchaser.

     The priority distribution due Purchaser under this Paragraph 2.e.ii. shall
be paid on the same schedule as the Management Shareholder Payments are received
by the Management Shareholder. If the Company has insufficient funds to pay the
portion of the priority distribution that is due at the time a Management
Shareholder receives a Management Shareholder Payment, the Management
Shareholders receiving Management Shareholder Payments shall pay Purchaser the
amount of such insufficiency pro rata in accordance with the proportionate
amounts of each such Management Shareholder's Payments, such amount to be paid
on the same schedule as the payments are received by the Management Shareholder.

     f. Right of Co-Sale. In addition to the rights set forth in Section 2.c, at
any time prior to the consummation of a Purchaser Approved Offering, Purchaser
shall have the right to participate pro rata to the full extent of its equity
interest in the Company in any sale or transfer of stock, other than a gift,
charitable donation or other sale or transfer representing less than One Percent
(1%) of the Company's outstanding common stock, by the Company or any
shareholder of the Company.

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     g. Rights of Class C Shares on Liquidation, Dissolution or Winding Up.

         The following provisions shall apply until the earlier of (i) the
consummation of a Purchaser Approved Offering, or (ii) the redemption or
conversion of all outstanding shares of the Company's Class C Common Stock:

         i. In the event of any liquidation, dissolution or winding up of the
Company (including without limitation a liquidation or reorganization under
Chapter 11 of the United States Bankruptcy Code of 1978, as amended and as may
hereafter be amended), (a "Liquidation"), after payment of any priority
distributions due to Purchaser under Section 2.e.ii. above, the holders of the
Company's Class C Common Stock then outstanding shall be entitled to be paid out
of the assets of the Company available for distribution to its shareholders
(pari passu with the holders of the Company's Class B Common Stock, and before
any payment shall be made to the holders of any shares of the Company's Class A
Common Stock) an amount equal to the stated value of $9.525 (subject to
appropriate adjustment for stock dividends, stock splits, combinations, and
similar recapitalizations affecting the Company's Class C Common Stock) per
share of the Company's Class C Common Stock (the "Stated Value"), with such
amount to be calculated as of the date of such payment.

         ii. If, upon any Liquidation, the assets of the Company available for
distribution to its shareholders shall be insufficient (a "Liquidation
Insufficiency") to pay the holders of the Company's Class C Common Stock and
Class C Common Stock the full amount to which they shall be entitled pursuant to
Section 2.g.i., the holders of the Company's Class B Common Stock and the
holders of the Company's Class C Common Stock shall be entitled to receive, pari
passu, all the assets of the Company available for distribution to its
shareholders.

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         iii. If there is no Liquidation Insufficiency and payment shall have
been made to the holders of the Company's Class B Common Stock and the holders
of the Company's Class C Common Stock of the full amount to which they are
entitled, the holders of the Company's Class B Common Stock and the holders of
the Company's Class C Common Stock shall then be entitled to share in all
remaining assets and funds of the Company ratably in proportion to the number of
shares of Company common stock held by such holder.

         iv. Unless such transaction is approved by the directors elected by the
holders of the Company's Class B Common Stock, the merger or consolidation of
the Company into or with another corporation in which the stockholders of the
Company shall own less than Fifty Percent (50%) of the voting securities of the
surviving corporation or the sale, transfer or lease (but not including a
transfer or lease by pledge or mortgage to a bona fide lender) of all or
substantially all of the assets of the Company shall be deemed to be a
Liquidation as such term is used in this Section 2.g. The amount deemed
distributed to the holders of the Company's Class B Common Stock and the holders
of the Company's Class C Common Stock upon any such merger or consolidation
shall be the cash or the value of the property, rights or securities distributed
to such holder by the acquiring person, firm or other entity. The value of such
property, rights or other securities shall be determined by a competent
independent appraiser mutually agreed upon by the holders of the Company's Class
B Common Stock and the Company. The Company shall, upon receipt of such
appraiser's valuation, give prompt written notice of the appraiser's valuation
to the holders of the Company's Class B Common Stock and the holders of the
Company's Class C Common Stock. The fees of such appraiser shall be shared 50%
by the Company, and 50% (shared pro rata) by the holders of the Company's Class
B Common Stock and the holders of the Company's Class C Common Stock.

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<PAGE>   15

         v. The Company's Articles of Incorporation shall contain provisions
consistent with this Section 2.g. until the earlier of (i) the consummation of a
Purchaser Approved Offering, or (ii) the redemption or conversion of all
outstanding shares of the Company's Class C Common Stock.

     i. Representation on the Board of Directors; Visitation Rights. Until a
Purchaser Approved Offering has been consummated or Purchaser no longer owns any
equity interest in the Company, there shall be, and the Company's Articles of
Incorporation shall provide for, at least five (5) members on the Company's
Board of Directors, two (2) of whom shall be elected by the holders of the
Company's Class B Common Stock voting as a class, and the remainder of whom
shall be elected by the holders of the Company's Class A Common Stock voting as
a class. The holders of the Company's Class B Common Stock shall have the right
to remove and replace two (2) members of the Board at any time, and the holders
of the Company's Class A Common Stock shall have the right to remove and replace
the remaining members of the Board at any time. The Company shall pay each
director elected by the holders of the Company's Class B Common Stock a fee of
Two Thousand Five Hundred Dollars ($2,500.00) for attendance at each meeting of
the Board of Directors. Board meetings will occur at least quarterly. The
holders of the Company's Class C Common Stock shall have the right to appoint a
representative who shall have the right to attend meetings of the Company's
Board of Directors as a visitor.

3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     In connection with the purchase of the Class C Shares hereunder, the
Company hereby represents and warrants to Purchaser as follows:

     a. Organization. The Company is a corporation duly organized, validly
existing and in good standing under the laws of the State of Texas. The Company
has the requisite corporate power

                                       15

<PAGE>   16

and authority to own or lease its properties and to carry on its business as now
conducted. The Company is duly qualified and in good standing as a foreign
corporation authorized to do business in each of the jurisdictions in which the
failure to be so qualified would have a material adverse effect on the Company
and has delivered to Purchaser a good standing certificate for each such
jurisdiction.

     The Company has delivered to Purchaser true and complete copies of the
Company's Articles of Incorporation and Bylaws (the "Organizational Documents"),
in each case as amended to the date hereof, and such Organizational Documents
are in full force and effect on the date hereof. The Company has delivered to
Purchaser a true and complete list of all officers and directors of the Company.
The Company has no Affiliates (as defined in Rule 12b-2 of Regulation 12B
promulgated under the Securities Exchange Act of 1934, as amended), except for
officers, directors and shareholders disclosed to Purchaser pursuant to this
Agreement.

         b. Capital Stock. The authorized capital stock of the Company consists
of Five Million (5,000,000) shares of Class A Common Stock, no par value per
share, of which Nine Hundred Twenty Five Thousand (925,000) shares are duly and
validly issued and outstanding, fully paid and non-assessable, Five Million
(5,000,000) shares of Class B Common Stock, no par value per share, of which
Eight Hundred Seventy Three Thousand Six Hundred Fifty Five (873,655) shares
will be duly and validly issued and outstanding, fully paid and non-assessable
upon Closing, and (_____) shares of Class C Common Stock, no par value per
share, of which Three Hundred Sixty Seven Thousand Four Hundred Sixty Four
(367,464) shares will be duly and validly issued and outstanding, fully paid and
non-assessable upon Closing (One Hundred Eighty Three Thousand Seven Hundred
Thirty Two (183,732)shares to Purchaser, and One Hundred Eighty Three Thousand
Seven Hundred Thirty Two (183,732) shares to Blue Ridge).

                                       16

<PAGE>   17

     All of the outstanding Class A Common Stock of the Company is owned by the
Shareholders other than Funding, and all of the outstanding Class B Common Stock
of the Company is owned by Funding. The Company does not have any other shares,
classes of shares or other debt or equity securities which are authorized,
issued or outstanding. None of the stock has been issued in violation of any
preemptive rights.

     The Class C Shares are duly authorized and upon issuance to the Purchaser
shall be validly issued to Purchaser, free and clear of all liens or rights of
any nature whatsoever, and without violation of any preemptive rights but
subject, as to 56,079 of the Class C Shares, to the Voting Trust Agreement.
Except for the options described on Schedule 3.b., there are no outstanding
subscriptions, options, rights, warrants, calls, convertible securities or other
rights, agreements or commitments which obligate the Company to issue, call,
repurchase, redeem or transfer any of its capital stock, or that restrict the
transfer of or otherwise relate to the Company's capital stock.

     c. Business. The Company is engaged primarily in the business of hardware
and service sales, Internet access, communications networking and related
consulting.

     d. Investments. The Company does not own or have, directly or indirectly,
any material interest or investment (whether as equity or debt) in, or own any
of the capital stock of, any corporation, partnership, joint venture, business,
trust or other entity.

     e. Authority. The Company has all requisite power and authority to execute
and deliver this Agreement and to perform all of its obligations hereunder. The
execution, delivery and performance of this Agreement and the transactions
contemplated hereby have been duly authorized by all necessary corporate actions
of the Board of Directors and shareholders of the Company. This

                                       17

<PAGE>   18

Agreement is a valid and binding obligation of the Company, enforceable against
it in accordance with their respective terms and conditions.

     f. No Consents. No consent, waiver, approval, license or authorization of,
or designation, declaration or filing with, any person or governmental or
regulatory authority on the part of the Company is required in connection with
the execution or delivery by the Company of this Agreement, nor the consummation
by the Company of the transactions contemplated hereby.

     g. No Violation. Neither the execution and delivery of this Agreement, nor
the consummation by the Company of the transactions contemplated hereby, shall
(a) conflict with the Organizational Documents of the Company, (b) violate or
constitute a default under any contract or other agreement to which the Company
is a party or by which the Company is bound, (c) violate any law, rule or
regulation of any state or of the United States or any judgment, decree, order,
regulation or rule of any court or any governmental or regulatory authority, or
(d) result in or require the creation of any lien or other encumbrance upon or
with respect to the Class C Shares or any of the assets or other securities of
the Company.

     h. Financial Statements. Attached hereto as Schedule 3.h. are unaudited
financial statements, balance sheets, income statements and cash flow statements
of the Company for the years ended December 31, 1996 and December 31, 1997 (the
"Financial Statements"). To the best knowledge of the Company, the Financial
Statements have been prepared in conformity with GAAP, and fairly and accurately
reflect the financial condition of the Company as of the respective dates
thereof in conformity with GAAP. To the best knowledge of the Company, all
interim financial statements for periods after December 31, 1997 that have been,
or pursuant to Section 5.c below will be, delivered to Purchaser, have been and
will be prepared in conformity with GAAP, and fairly and

                                       18

<PAGE>   19

accurately reflect the financial condition of the Company as of the respective
dates thereof in conformity with GAAP.

     The Company does not have any debts, liabilities or other obligations of
any nature (whether contingent or fixed, accrued or not accrued, liquidated or
not liquidated, known or unknown, asserted or not asserted, and including
without limitation any direct or indirect obligation to provide funds in respect
of, or to guarantee, act as surety for, or assume, any debt, liability or other
obligation of any nature of any individual, corporation, joint venture,
partnership or other entity) except (i) liabilities specifically disclosed or
reserved against on the Financial Statements, (ii) liabilities which in the
aggregate are not material, (iii) ordinary business expenses incurred in the
ordinary course of business since the date of the last Financial Statements, or
(iv) liabilities disclosed on Schedule 3.h. Except as disclosed on Schedule
3.h., the Company is current on all debts, accounts payable and lease payments
as of the date hereof.

     i. No Material Adverse Change. Since the date of the most recent Financial
Statements there has been no material adverse change in the condition, financial
or otherwise, assets, liabilities or business of the Company, nor has there been
any event or condition of any character that has or may in the future materially
and adversely affect the business or prospects of the Company. Since the date of
the most recent Financial Statements there has been no dividend or other
distribution or payment in respect of the stock of the Company.

     j. Taxes. The Company has paid or made adequate provision for payment of
all federal, state and local income, payroll, sales, property and other taxes,
assessments, liabilities, fees and other governmental charges (including
interest and penalties) whether or not in dispute, which have or may become due
with respect to any period ending on or prior to the Closing Date, and has filed
all

                                       19

<PAGE>   20

required tax returns and reports which are required to be filed. No tax
deficiency has been asserted, proposed or threatened against the Company for
taxes for the current year or for any prior period which has not been fully
settled or paid, nor has any issue been raised by the Internal Revenue Service
or any other taxing authority which reasonably can be expected to result in a
deficiency for any period. The Company's tax returns have never been audited,
nor has the Company received any notice of a planned audit or any communication
that would lead a reasonable person to believe that an audit is currently being
considered by a tax authority.

     k. Contracts. The Company is not in material breach of or in material
default under any contract, commitment, agreement, loan, lease or other
instrument (the "Contracts") which materially and adversely affects the Company,
and the Company is not aware of any breach by any other party to any of the
Contracts. The terms of all Contracts are in all material respects arm's length
terms.

     l. Property. Except for the property leased pursuant to the leases listed
on Schedule 3.l. (copies of which have been provided to Purchaser), and the
liens described on Schedule 3.1, the Company has good and marketable title to
all real and personal property reflected on the Financial Statements, and to all
assets acquired since the date of the most recent Financial Statements, free and
clear of any material liens, claims or encumbrances, except for liens for taxes
not yet due and payable and inventory which has either been used or consumed or
has been sold in the ordinary course of business. To the best of the Company's
knowledge, there are no material assets used by the Company in the conduct of
its business which are not either owned by the Company or leased to the Company
under one of the leases described in Schedule 3.l.

     m. Lawsuits. Except as set forth in Schedule 3.m., there is no pending
claim, suit or action, or legal, administrative, arbitration or other proceeding
or governmental investigation, nor is

                                       20

<PAGE>   21

there any basis for any such action, before any federal, state, local, or other
court or governmental authority, nor to the best of the knowledge of the
Company, has any such action been threatened, (i) against the Company or (ii)
against any of the officers or directors of the Company. The Company has
delivered to Purchaser a true and correct copy of the pleadings in all lawsuits
in which the Company is a party. The Company does not know of any judgment,
order, writ, injunction, decree or award that has been issued by, or requested
of, any court, administrative or governmental agency, arbitrator or other
authority which does or may result in any material adverse change in the
business, properties, assets or financial condition of the Company.

     n. Compliance with Laws. The Company is in substantial compliance, and at
all times the Company has conducted its business and affairs in substantial
compliance, with all federal, state and local statutes, laws, ordinances,
requirements, rules, regulations or orders applicable to its business, including
without limitation the Occupational Safety Health Act of 1970, as amended; the
Equal Employment Opportunity Act of 1972, as amended; federal, state and local
laws, rules and regulations of the Federal Trade Commission and other
governmental authorities relating to franchising; state and federal securities
laws; and laws and regulations requiring licenses or permits (including, without
limitation, permits relating to the handling or discharge of Hazardous
Materials) or the payments of taxes. The Company has not received any notice
asserting any noncompliance. The Company has all licenses, permits and approvals
necessary for the conduct of its business. The Company has not granted a license
or other right to use any tangible or intangible assets used in or related to
the business. From the Company's inception, none of the Company's directors or
officers have been arrested or convicted of any material crime, nor have any of
them been bankrupt or served as an officer or director of a bankrupt company.

                                       21

<PAGE>   22

     o. Environmental Matters.

         i. To the best of the Company's knowledge, neither the Company nor any
property owned or operated by the Company has been or is in violation of, nor
does the Company have any liabilities under, any Environmental Law (as defined
in Section 3.o.iii.). To the best of the Company's knowledge, there are no
actions, suits or proceedings, demands, claims, notices, or investigations
(including, without limitation, notices, demand letters or requests for
information from any Environmental Agency (as defined in Section 3.o.v.),
instituted, pending, or threatened, relating to any liability under any
Environmental Law of the Company or respecting any property owned or operated by
the Company.

         ii. To the best of the Company's knowledge, no Hazardous Materials (as
defined in Section 3.o.iv.) have been generated, treated, stored or disposed of
at, or transported to or from, any properties owned or operated by the Company
at any time, except in compliance with applicable Environmental Laws. To the
best of the Company's knowledge, no friable asbestos containing material is in
use, or is or has been stored or disposed of, on or upon any properties owned or
operated by the Company. To the best of the Company's knowledge, no
polychlorinated biphenyls ("PCBs") are located on or in any properties owned or
operated by the Company in any form or device, including, without limitation, in
the form of electrical transformers, fluorescent light fixtures with ballasts,
or cooling oils, except in compliance with applicable Environmental Laws. To the
best of the Company's knowledge, no underground storage tanks are located on any
properties owned or operated by the Company or were located on any properties
owned or operated by the Company and subsequently removed or filled.

                                       22

<PAGE>   23

         iii. "Environmental Law" means any federal, state, local or foreign
law, statute, ordinance, rule, regulation, code, license, permit, authorization,
approval, consent, order, judgment, decree, injunction or agreement with any
Environmental Agency relating to (i) the protection, preservation or restoration
of the environment (including, without limitation, air water vapor, surface
water, groundwater, drinking water supply, surface soil, subsurface soil, plant
and animal life or any other natural resource), and/or (ii) the usage, storage,
recycling, treatment, generation, transportation, processing, handling,
labeling, production, release, or disposal of any substance presently listed,
defined, designated or classified as hazardous, toxic, radioactive or dangerous,
or otherwise regulated, whether by type or by quantity, including any material
containing any such substance as a component.

         iv. "Hazardous Materials" means solid waste (as that term is defined
under the Resource Conservation and Recovery Act, 42 U.S.C.A. Section 6901 et
seq. ("RCRA"), and the regulations adopted pursuant to RCRA), hazardous waste
(as that term is defined under RCRA and the regulations adopted pursuant to
RCRA), hazardous substances (as that term is defined in the Comprehensive
Environmental Response, Compensation and Liability Act, 42 U.S.C.A. Section 9601
et seq. ("CERCLA"), and the regulations adopted pursuant to CERCLA), and other
pollutants, including, without limitation, any solid, liquid, gaseous or thermal
irritant or contaminant, such as smoke, vapor, soot, fumes, acids, alkalis or
chemicals.

         v. "Environmental Agency" means the United States Environmental
Protection Agency, any state agency in a state where the Company owns or
operates properties which is similar in jurisdiction to the United States
Environmental Protection Agency, or any other federal, state or local agency
responsible for regulating or enforcing laws, rules, regulations and ordinances
relating

                                       23

<PAGE>   24

to (i) the protection, preservation or restoration of the environment
(including, without limitation, air, water vapor, surface water, groundwater,
drinking water supply, surface soil, subsurface soil, plant and animal life or
any other natural resource), and/or (ii) the use, storage, recycling, treatment,
generation, transportation, processing, handling, labeling, production, release,
or disposal of any substance presently listed, defined, designated or classified
as hazardous, toxic, radioactive, or dangerous, or otherwise regulated, whether
by type or by quantity, including any material containing any such substance as
a component.

     p. Intellectual Property. The Company is the sole and exclusive owner of,
or has the valid and continuous right to use, free and clear of all liens,
claims, and encumbrances, all trademarks, service marks, trade names, trade
secrets, copyrights, patents, franchises and applications therefor, or other
intangible property, owned by, licensed to or otherwise used by the Company. The
Company also is the sole and exclusive owner of, or has the valid and continuous
right to use, free and clear of all liens, claims and encumbrances, all
background technologies and manufacturing procedures used by it in providing
services or products to its customers. The Company has not infringed or
otherwise violated any trademark, service mark, trade name, trade secret,
copyright, patent, franchise or other intangible property right of another.
Except as set forth on Schedule 3.p., the Company is not required to pay any
royalty, license fee, commission or other payment to any person or entity with
respect to any trademark, service mark, trade name, trade secret, copyright,
patent, franchise or other intangible property. The Company has not granted any
person or entity the right to use any of the Company's trademarks, service
marks, trade names, trade secrets, copyrights, patents, technology or other
intangible property, nor is it aware of any such use by another person or
entity.

                                       24

<PAGE>   25

     q. Insurance. Schedule 3.q. contains a true and correct list, together with
copies of certificates or cover pages, of all policies of insurance owned and/or
maintained by the Company. All physical properties and assets of the Company are
covered by fire and other insurance against casualty loss customarily covering
properties and assets of comparable businesses in this region, in amounts which
are reasonable in light of existing replacement costs. The Company maintains
general liability, workers' compensation and other usual types of insurance in
reasonable amounts. The Company is not now in default regarding the provisions
of any policy of insurance, and has not and shall not have failed to give any
notice or present any claim thereunder in due and timely fashion.

     r. Books and Records. To the best of the Company's knowledge, the books and
accounts and other corporate records of the Company are complete and correct in
all material respects.

     s. Employee Relations. Since the date of the most recent Financial
Statements, there has been no material adverse change in the relationship
between the Company and its employees nor any strike or labor disturbance by
such employees and, to the best of the Company's knowledge, such a change,
strike or labor disturbance is not likely. The Company is in substantial
compliance with all applicable laws relating to the employment of labor,
including without limitation any provisions thereof relating to wages and hours,
discrimination due to age, religion, sex, national origin, disability or
immigration status.

     Schedule 3.s. contains true, complete and correct information as to the
names and rates of compensation (regardless of form) of all current employees of
the Company, together with information as to any bonus, incentive, insurance,
compensation plan, welfare, retirement, defined benefit, 401(k), pension, profit
sharing, salary reduction, deferred compensation, stock purchase,

                                       25

<PAGE>   26

stock option, vacation, holiday and sick pay or other similar benefit plans
(said plans being referred to as the "Plans") in which any such employees of the
Company participate. All obligations of the Company, whether arising by
operation of law, by contract or by past custom, for payment by it to trusts,
retirement plans or other funds or any governmental agency with respect to
unemployment compensation benefits, social security benefits or any other
benefits for employees of the Company have been paid or shall be paid by the
Company at the time the Company is obligated to make such payments. All benefits
payable directly to the Company's employees have been paid or shall be paid by
the Company at the time the Company is obligated to make such payments. All
reasonably anticipated obligations of the Company, whether arising by operation
of law, by contract or by past custom, for vacation and holiday pay, bonuses and
other forms of compensation or benefits which are or may become payable to
employees or any of them have been paid, or shall be paid, in accordance with
the provisions of applicable laws, regulations, benefit plans or policies.

     t. Broker Fee. All broker, finder or professional fees associated with the
transactions contemplated by this Agreement have been disclosed in this
Agreement or on Schedule 3.t, and shall be paid by the Company as and when due.

     u. Customers and Suppliers. The Company does not know of any customer or
supplier of the Company who intends to terminate or reduce its business with the
Company, whether as a result of this Agreement or otherwise. The Company is not
bound by any concession or arrangement with any customer or supplier which is
outside the ordinary course of the Company's business or not made generally
available to other customers or suppliers of the Company.

     v. Employee Benefit Plans. True, complete and correct copies of all
relevant documents

                                       26

<PAGE>   27

with respect to the Plans, including, but not limited to, each of the following
documents: (i) a copy of the Plan and each related trust or other funding
agreement, including insurance contracts (and all amendments thereto) (ii) the
last filed Form 5500; (iii) the most recent determination letter received from
the United States Internal Revenue Service with respect to each Plan that is
intended to be qualified under Section 401 of the Internal Revenue Code of 1986,
as amended (the "Code"); and (iv) the summary plan descriptions and all material
modifications thereto, have been delivered to Purchaser.

     All Plans comply in all substantial respects and the Company has
administered and operated each such Plan in substantial compliance with the
requirements of applicable law, including, without limitation, the Employee
Retirement Income Security Act of 1974 as amended ("ERISA"), and the Code, and
no such Plan that is subject to Part 3 of Subtitle B of Title I of ERISA has
incurred any "accumulated funding deficiency" within the meaning of Section 302
of ERISA or Section 412 of the Code, whether or not waived.

     The Company does not maintain and is not required to contribute to any
multi employer plan (as defined in Section 3(37) of ERISA) for the benefit of
employees or former employees of the Company.

         The Pension Benefit Guaranty Corporation ("PBGC") has not instituted
proceedings to terminate any of the Company's defined benefit plans and no
condition exists that presents a risk that such proceedings shall be instituted.
There has been no "reportable event" within the meaning of Section 4043(b) of
ERISA with respect to any defined benefit plan and no defined benefit plan has
been terminated within the preceding six years or is expected to be terminated.
No liability (other than for the payment of premiums) to the PBGC has been or is
expected to be incurred by the

                                       27

<PAGE>   28

Company or any officer, director, shareholder or employee of the Company with
respect to any defined benefit plan.

     w. Unlawful Payments. Neither the Company nor any shareholder, director,
officer, agent, employee or other person associated with or acting on the
Company's behalf has directly or indirectly, used any corporate funds for
unlawful contributions, gifts, entertainment or for other unlawful expenses
relating to political activity; made any unlawful payment to foreign or domestic
governmental officials or employees or to foreign or domestic political parties
or campaigns from corporate funds; established or maintained any unlawful or
unrecorded fund of corporate monies or other assets; made any false or
fictitious entry on the books or records of the Company; or made any bribe,
rebate payoff, influence payment, kickback or other unlawful payment to any
person or entity, private or public, regardless of form, whether in money,
property, or services, to obtain favorable treatment in securing business or to
obtain special concessions or to pay for favorable treatment for business
secured or for special concessions already obtained.

     x. No Omission. The Company has not intentionally omitted to state to
Purchaser any material fact relating to the Company that is necessary in order
to make the statements made to Purchaser in this Agreement, in the light of the
circumstances under which they were made, not misleading.

                                       28

<PAGE>   29

4. REPRESENTATIONS AND WARRANTIES OF PURCHASER

     In connection with the sale of the Class C Shares hereunder, Purchaser
hereby represents and warrants to the Company that:

     a. Organization. Purchaser is a limited liability company duly organized,
validly existing and in good standing under the laws of North Carolina.

     b. Authority. Purchaser has all requisite power and authority to execute
and deliver this Agreement and to perform all of its obligations hereunder. The
execution, delivery and performance of this Agreement and the transactions
contemplated hereby have been duly authorized by all necessary action of
Purchaser. This Agreement is a valid and binding obligation of Purchaser,
enforceable against it in accordance with its terms and conditions.

     c. No Violation. Neither the execution and delivery of this Agreement, nor
the consummation by Purchaser of the transactions contemplated hereby, shall (i)
conflict with the Articles of Organization or Operating Agreement of Purchaser,
(ii) violate or constitute a default under any contract or other agreement to
which Purchaser is a party or by which Purchaser is bound, or (iii) violate any
law, rule or regulation of any state or of the United States or any judgment,
decree, order, regulation or rule of any court or any governmental or regulatory
authority, which would have a material adverse effect on the Company or the
transactions contemplated herein.

     d. No Consents. No consent, waiver, approval, license or authorization of,
or designation, declaration or filing with, any person or governmental or
regulatory authority on the part of Purchaser is required in connection with the
execution or delivery by Purchaser of this Agreement or the consummation by
Purchaser of the transactions contemplated hereby or thereby, except to the

                                       29

<PAGE>   30

extent obtained by Purchaser prior to Closing or to the extent that their
failure to be obtained would not have a material adverse effect on the Company
or the transactions contemplated hereby.

5. AFFIRMATIVE COVENANTS AND AGREEMENTS

     From the date hereof, until the consummation of a Purchaser Approved
Offering or the sale by Purchaser of all of its equity interests in the Company,
the Company shall comply with the following:

     a. Conduct of Business. The Company (a) shall conduct its business in the
ordinary course and, without the prior written consent of Funding, except in the
ordinary course of business, shall not enter into, or permit the Company or any
assets of the Company to become bound by or subject to, any Contract, and (b)
shall continue to manage the inventories, accounts receivable, accounts payable
and payroll of the Company in accordance with past practice in the ordinary
course of business. The Company shall promptly notify Purchaser of any actions
or proceedings of the type described in Section 3.m.

     b. Corporate Examination and Investigations. Purchaser, shall be entitled,
through its employees and representatives, including, without limitation,
Purchaser's counsel and accountants, on a reasonable basis, to make such
investigation of the assets, properties, business and operations of the Company
and such examination of its books, records and financial condition, as Purchaser
wishes. Any such investigation and examination shall be conducted at reasonable
times and under reasonable circumstances and the Company shall cooperate fully
therein. No such investigation undertaken by Purchaser shall relieve the Company
of any liability hereunder. In order that Purchaser may have full opportunity to
make such business, accounting and legal review, examination or investigation,
the Company shall make available at its principal office to the representatives
of

                                       30

<PAGE>   31

Purchaser during such period all such information and copies of such documents
concerning the affairs of the Company as such representatives may reasonably
request and shall cause the officers, employees, consultants, agents,
accountants and attorneys of the Company to cooperate fully with such
representatives in connection with such review and examination. The information
obtained by Purchaser shall remain confidential and shall be disclosed only to
the officers, employees managers, members, prospective members and
representatives of Purchaser.

     c. Delivery of Financial Materials. The Company shall deliver to Purchaser
(i) within thirty (30) days of the end of each month, monthly year-to-date
financial statements prepared in accordance with GAAP (including profit and
loss, cash flow, and balance sheet) and certified by the Company's chief
financial officer, a backlog report, customer contract job status report,
accounts receivable, accounts payable agings and a monthly one-page management
summary of operations; and (ii) within ninety (90) days after the fiscal year
end, (a) an annual independent certified audit from an outside accounting firm
designated by the Company and reasonably acceptable to Funding and (b)
projections for the next year in the same format as the financial statements.

     d. Other Deliveries. The Company shall deliver to Purchaser the following
documents or information as applicable: (i) within thirty (30) days after
filing, a copy of all material documents filed with government agencies,
including without limitation, the Internal Revenue Service, the Environmental
Protection Agency and the Securities Exchange Commission; (ii) within thirty
(30) days after filing, a copy of any pleadings of any lawsuits filed by or
against the Company; (iii) within ten (10) days after receipt, a copy of any
notification received by the Company of any defaults under any Contracts to
which the Company is a party, and (iv) within ten (10) days after delivery to
the

                                       31

<PAGE>   32

Company's senior lender, a copy of any reports, certificates or information
provided to the Company's senior lender.

     e. Insurance. The Company shall carry and maintain in effect insurance
coverage with reputable insurers, which coverage in respective amounts, types
and risks insured is adequate for the business conducted by the Company as
reasonably determined by Funding. Such insurance coverage shall include, without
limitation, directors' and officers' liability insurance.

     f. Use of Proceeds. The Company will use the proceeds from the issuance of
the Class C Shares hereunder to refinance the Company's existing bank
indebtedness, and to provide working capital to develop existing and future
projects.

6. FOREBEARANCES OF THE COMPANY

     Except with the prior written consent of Funding, or the affirmative vote
of the directors elected by the holder of the Class B Shares, until the
consummation of a Purchaser Approved Offering or sale by Purchaser of all of its
equity interests in the Company, the Company shall not:

     a. carry on its business other than in the usual, regular and ordinary
course in substantially the same manner as heretofore conducted, change its
corporate structure or establish or acquire any new subsidiary or invest in any
Affiliates;

     b. enter into (i) any material agreement, arrangement , lease or commitment
not made in the ordinary course of business;

     c. issue or sell any shares of capital stock representing in excess of One
Percent (1%) of the outstanding shares of the Company (except pursuant to the
exercise of options described on Schedule 3.b., or options issued to employees
pursuant to the terms of the Company's Stock Option Plan as in effect on the
date hereof), or create any new class or series of securities;

                                       32

<PAGE>   33

     d. issue, grant or authorize any options (except options described on
Schedule 3.b., or options issued to employees pursuant to the terms of the
Company's Stock Option Plan as in effect on the date hereof), convertible debt
or preferred stock representing, in the aggregate, in excess of One Percent (1%)
of the outstanding shares of the Company, or redeem any outstanding shares of
the Company representing, in the aggregate, in excess of One Percent (1%) of the
outstanding shares of the Company.

     e. amend or repeal its Organizational Documents;

     f. merge with any other corporation or permit any other corporation to
merge into it or consolidate with any other corporation; acquire control over
any other corporation or organization or create any subsidiary; or liquidate,
sell or otherwise dispose of any assets or acquire any assets, other than in the
ordinary course of its business consistent with past practice;

     g. fail to maintain its corporate existence in good standing or fail to
comply in any material respect with any laws, regulations, ordinances or
governmental actions applicable to it and to the conduct of its business;

     h. transact any business or enter any agreement with the Company's Board of
Directors, any shareholder, or any other individual officer of the Company,
unless such transaction is negotiated and consummated at arm's length;

     i. increase the rate of compensation of, pay or agree to pay any bonus to,
or provide any other employee benefit or incentive to, any of its directors,
officers or employees, except in a manner consistent with past practice and
approved by the Compensation Committee of the Company's Board of Directors;

                                       33

<PAGE>   34

     j. change the location or nature of its business operations or invest any
funds in any entity not strictly related to its business;

     k. file any bankruptcy or receivership petition or make an assignment for
the benefit of creditors;

     l. agree to do any of the foregoing.

7. CONDITIONS PRECEDENT TO THE OBLIGATIONS OF PURCHASER

     The obligation of Purchaser to enter into and complete the Closing is
subject, at its option, to the fulfillment on or prior to the Closing Date of
the following conditions, the imposition of which is solely for the benefit of
Purchaser, any one or more of which may be waived by Purchaser:

     a. The representations and warranties of the Company contained in this
Agreement shall be true, correct and complete in all material respects on and as
of the Closing Date with the same force and effect as though made on and as of
the Closing Date.

     b. The Company shall have performed in all material respects all
obligations and complied with all covenants or forebearances required by this
Agreement to be performed or complied with by the Company on or prior to the
Closing Date.

     c. The Company shall have delivered a certificate to Purchaser, dated the
Closing Date and signed by the President and the Secretary or Treasurer of the
Company, to the effect that the applicable conditions set forth in this Section
have been satisfied.

     d. The Company shall have delivered a certificate to Purchaser, dated the
Closing Date and signed by the Secretary or an Assistant Secretary of the
Company, certifying and attaching a copy of the Company's Organizational
Documents as in effect as of the Closing Date.

                                       34

<PAGE>   35

     e. Purchaser shall have received an opinion of counsel to the Company,
dated the Closing Date, as to such matters as Purchaser may reasonably request
with respect to the transactions contemplated hereby.

     f. Purchaser shall have received all such certified resolutions,
certificates, documents or instruments with respect to the Company as Purchaser
may reasonably require to carry out the intent and purpose of this Agreement.

     g. No action, suit or proceeding shall have been instituted before any
court, governmental or regulatory body or arbitral tribunal, or instituted or
threatened by any governmental or regulatory body, which has or may have, in the
opinion of Purchaser, a materially adverse effect on the assets, properties,
business, operations or condition (financial or otherwise) of the Company.

     h. No action, suit or proceeding shall have been instituted before any
court, governmental or regulatory body or arbitral tribunal, or instituted or
threatened by any governmental or regulatory body, to restrain, modify or
prevent the carrying out of the transactions contemplated hereby or to seek
damages or a discovery order in connection with such transactions.

8. CONDITIONS PRECEDENT TO OBLIGATIONS OF THE COMPANY

     The obligation of the Company to enter into and complete the Closing is
subject, at its option, to the fulfillment on or prior to the Closing Date of
the following conditions, the imposition of which is solely for the benefit of
the Company, any one or more of which may be waived by the Company:

     a. The representations and warranties of Purchaser contained in this
Agreement shall be true, correct and complete in all material respects on and as
of the Closing Date with the same force and effect as though made on and as of
the Closing Date.

                                       35

<PAGE>   36

     b. Purchaser shall have performed in all material respects all obligations
and complied with all covenants required by this Agreement to be performed or
complied with by Purchaser on or prior to the Closing Date.

     c. Purchaser shall have delivered a certificate to the Company, dated the
Closing Date and signed by the President and the Secretary or Treasurer of the
general partner of Purchaser, to the effect that the applicable conditions set
forth in this Section have been satisfied.

     d. The Company shall have received all such certified resolutions,
certificates, documents or instruments with respect to Purchaser as the Company
may reasonably require to carry out the intent and purpose of this Agreement.

     e. No action, suit or proceeding shall have been instituted before any
court, governmental or regulatory body or arbitral tribunal, or instituted or
threatened by any governmental or regulatory body, to restrain, modify or
prevent the carrying out of the transactions contemplated hereby or to seek
damages or a discovery order in connection with such transactions.

9. EXPENSES

     At Closing, the Company shall (i) pay Geneva Associates, LLC an advisory
fee of $87,000 for its services in connection with the transactions contemplated
hereunder, and (ii) pay all reasonable out-of-pocket costs and expenses
(including, without limitation, legal, accounting and consulting fees) incurred
by Purchaser in connection with its due diligence and the negotiation,
preparation, execution and performance of this Agreement and the transactions
contemplated hereby. Amounts to be paid by the Company at Closing under this
Section 9 shall be paid directly out of the payment of the purchase price for
the Class C Shares at Closing.

                                       36

<PAGE>   37

10. INDEMNIFICATION

     a. Obligation of the Company to Indemnify. The Company agrees to indemnify,
defend and hold harmless Purchaser against and in respect of any and all claims,
demands, costs, expenses, obligations, liabilities, damages, recoveries and
deficiencies, including, without limitation, interest, penalties and reasonable
attorneys' fees ("Losses"), which directly or indirectly arise, result from or
relate to the breach by the Company of, or the failure by the Company to comply
with or perform, the Company's representations, warranties, covenants or
agreements contained in this Agreement. To compensate Purchaser for the
reduction in the capitalization of the Company as the result of any
indemnification payment by the Company hereunder, the amount of any
indemnification payment hereunder shall be equal to the sum of (i) the amount of
Purchaser's Losses plus (ii) an amount such that, following the indemnification
payment, Purchaser would be in the same position as if the shareholders of the
Company (other than Purchaser) had made such indemnification payment to
Purchaser directly.

     b. Obligation of Purchaser to Indemnify. Purchaser agrees to indemnify,
defend and hold harmless the Company against and in respect of any and all
Losses which directly or indirectly arise, result from or relate to the breach
by Purchaser of, or the failure by Purchaser to comply with or perform, any of
its representations, warranties, covenants or agreements contained in this
Agreement.

11. TERMINATION

     a. This Agreement may be terminated subject to this Section 11, as follows:

         i. At any time on or prior to the Closing Date, by the mutual written
consent of the Company and Purchaser;

                                       37

<PAGE>   38

         ii. At any time on or prior to the Closing Date, by Purchaser in
writing, if the Company has, or by the Company in writing if Purchaser has, in
any material respect, breached (i) any covenant or undertaking contained herein
or (ii) any representation or warranty contained herein, and in the case of (i)
and (ii) if such breach has not been cured by the earlier of ten (10) days after
the date on which written notice of such breach is given to the party committing
such breach or the Closing Date;

         iii. On the Closing Date, by either Purchaser or the Company in
writing, if any of the conditions precedent to the obligations of such party to
consummate the transactions contemplated hereby have not been satisfied or
fulfilled; or

         iv. By either Purchaser or the Company in writing, if the Closing Date
has not occurred by the close of business on July 15, 1998.

     b. Effect of Termination. In the event of a termination of this Agreement
for any reason, each party may seek any remedies available to it, including
claims for damages, specific performance or injunctive relief.

12. CLAIMS FOR INDEMNIFICATION

     Any claim for indemnification which is based upon a final judgment, decree
or award of a court of competent jurisdiction requiring the payment of money by
any party to this Agreement or any of its officers, directors or controlling
persons, shall be conclusive as to the amount of such claim, provided a
certified copy of such judgment, decree or award accompanies the notice relating
to such claim and provided further that the party seeking indemnification shall
have complied with Section 14 of this Agreement.

                                       38

<PAGE>   39

     Any claim for indemnification shall be conclusive in all respects thirty
(30) days after receipt by the other party of notice thereof, unless within such
period the indemnifying party shall have sent to the party seeking
indemnification, and the party seeking indemnification shall have received,
notice questioning the propriety of the claim, in which case such claim, unless
settled by agreement of the parties, shall be promptly referred to arbitration
as provided in Section 13. In the event that a party makes a claim for
indemnification, and the indemnifying party contests that claim but the claim is
not settled or referred to arbitration within sixty (60) days after receipt by
the indemnifying party of notice of the claim from the party seeking
indemnification, such claim shall be regarded as conclusive in all respects.

13. DISPUTE RESOLUTION

     All disputes arising hereunder between the parties shall be referred to
arbitration under the Uniform Arbitration Act as adopted in Delaware, according
to the rules of the American Arbitration Association. Judgment upon the award by
the arbitrator may be entered in any court having jurisdiction thereof. As part
of such award, the arbitrator shall be promptly paid by the party that initiates
the proceeding, but the portion of each such fee and expenses which represents
the same percentage thereof as the percentage of the amount of the claim
represented by the amount awarded shall be added to the amount of the award and
shall be borne by the indemnifying party. Any award shall be a conclusive
determination of the matter and shall be binding upon Purchaser and the Company
and shall not be contested by either of them. Arbitration proceedings shall be
held in the city of Dover, Delaware unless the parties agree upon another
location. In any such action the prevailing party, in the judgment of the
arbitrator, shall be entitled to an award of its costs and attorneys' fees
incurred in the action.

                                       39

<PAGE>   40

14. THIRD PARTY CLAIMS

     In the event that any legal proceeding shall be instituted, or any claim or
demand shall be asserted, by any third party in respect of which indemnity may
be sought by Purchaser or the Company pursuant to the provisions of this
Agreement, the party seeking indemnification, with reasonable promptness after
obtaining knowledge of such proceeding, claim or demand shall give written
notice thereof to the other party, who shall then have the right, at its option
and expense, to be represented by counsel of its choice in connection with such
matter, which counsel shall be reasonably satisfactory to the party seeking
indemnification, and to defend against, negotiate, settle or otherwise deal with
any such proceeding, claim or demand; provided, however, that without the prior
written consent of the party seeking indemnification, which consent shall not be
unreasonably withheld, the indemnifying party shall not consent to the entry of
any judgment in or agree to any settlement of any such matters; and provided
further that the party seeking indemnification may retain counsel, at its own
expense, to represent it and participate in connection with any such proceeding
or claim or demand. Failure by the indemnifying party to notify the party
seeking indemnification of the indemnifying party's election to defend any
proceeding, claim or demand with respect to which indemnity is sought within
thirty (30) days after notice thereof shall have been given by the party seeking
indemnification shall be deemed a waiver by the indemnifying party of its right
to defend against such matter. If the indemnifying party assumes defense of any
such proceeding, claim or demand, it shall take or cause to be taken all steps
necessary in connection with such defense, and the party seeking indemnification
shall in all events be entitled to indemnity with respect to such matter, as
provided in this Agreement. In the event that the indemnifying party does not
elect to defend any proceeding, claim or demand with respect to which indemnity
is sought, the party seeking

                                       40

<PAGE>   41

indemnification may defend against, settle or otherwise deal with any such
proceeding, claim or demand in such matter as it may in its good faith
discretion deem appropriate and the indemnifying party shall be liable for
indemnification with respect to such matter, including without limitation the
reasonable costs of such defense, as provided in this Agreement. In the event of
any proceeding, claim or demand by a third party with respect to which a claim
for indemnification is made hereunder, the parties hereto agree that they will
cooperate fully with each other in connection with the defense or settlement of
such matter.

15. MISCELLANEOUS.

     a. Counterparts. This Agreement may be executed simultaneously in one or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     b. Waiver of Compliance. Any failure of Purchaser or of the Company to
comply with any obligation, agreement or condition contained herein may be
expressly waived in writing by the Company or Purchaser, respectively, but such
waiver or failure to insist upon strict compliance with such obligation,
agreement or condition shall not operate as a waiver of, or estoppel with
respect to, any subsequent or other failure. No waiver shall be binding unless
executed in writing by the party or parties making such waiver.

     c. Assignment; Binding on Successors. This Agreement may not be assigned by
any party hereto without the written consent of the other parties hereto,
provided, however, that Purchaser may assign any or all of its rights and
obligations hereunder to any person or entity to whom Purchaser transfers any of
the Class C Shares; provided, however, that the Purchaser shall be the sole
representative of any such transferee in dealing with all matters pertaining to
this Agreement.

                                       41

<PAGE>   42

This Agreement shall be binding on, and inure to the benefit of, the parties to
it and their respective legal representatives, successors and permitted assigns.

     d. Representations and Warranties. All representations, warranties and
agreements of the parties contained in this Agreement, or in any Schedule,
instrument, certificate or other writing provided for herein, shall survive the
Closing.

     e. Notices. Except as provided in this Section 15.e., all notices or other
communications hereunder shall be in writing and shall be effective (a) when
personally delivered by courier or otherwise to the party to be given such
notice or other communication, or (b) on the business day following the day such
notice or other communication is sent by telex, facsimile or similar electronic
device, fully prepaid, which telex, facsimile or similar electronic
communication shall promptly be confirmed by written notice or (c) on the fifth
day following the date of deposit in the United States mail if such notice or
other communication is sent by certified or registered air mail (or its
equivalent) with return receipt requested and postage thereon fully prepaid. The
addresses for such notices shall be as follows:

         If to Purchaser:

                  Spotswood Capital, LLC
                  Suite ____, First Union Tower
                  300 N. Greene Street
                  Greensboro, North Carolina 27401
                  Attention: William J. Armfield IV
                  Facsimile: (336) _________

                                       42

<PAGE>   43

         If to the Company:

                  I 3S, Inc.
                  1330 River Bend, Suite 600
                  Dallas, Texas 75247
                  Attention: President
                  Facsimile: (214) 631-5480

         With a copy to:

                  Clay C. Scott, Jr.
                  7501 Inwood Road
                  Post Office Box 7569
                  Dallas, Texas 75209
                  Facsimile: (214) 358-2851

Any party hereto may, by notice to the other parties hereto, change its address
for receipt of notices hereunder.

     f. Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of North Carolina.

     g. Entire Agreement. This Agreement, including the Schedules, Exhibits and
other documents referred to herein which form a part hereof, embodies the entire
agreement and understanding of the parties hereto in respect of the subject
matter contained herein. There are no restrictions, promises, warranties,
covenants or understandings, other than those expressly set forth or referred to
herein. This Agreement supersedes all prior agreements and understandings
between the parties with respect to such subject matter. No supplement,
modification or amendment of this Agreement shall be binding unless executed in
writing by all of the parties hereto.

     h. Headings; References. The headings appearing in this Agreement are for
convenience of reference only and shall not affect the interpretation of this
Agreement. All references herein to Sections, Exhibits and Schedules refer to
the Sections contained in, and the Exhibits and Schedules attached to, this
Agreement.

                                       43

<PAGE>   44

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their duly authorized representatives on the day and year first
above written.

ATTEST:                               I 3S, INC.

         /s/ [ILLEGIBLE]              By:         /s/ James R. Price
-----------------------------------       -------------------------------------
                                          James R. Price, President

(CORPORATE SEAL)
                                      SPOTSWOOD CAPITAL, LLC

                                      By:      /s/ William J. Armfield IV
                                          --------------------------------------
                                          William J. Armfield IV, Member-Manager

     The Shareholders execute this Agreement solely for the purpose of agreeing
to the provisions of Section 2 hereof and waiving any and all preemptive rights
with respect to the issuance of the Class C Shares hereunder, which rights are
hereby waived.

                                                 /s/ James R. Price
                                       -----------------------------------------
                                       James R. Price

                                                 /s/ Gary A. Dobbins
                                       -----------------------------------------
                                       Gary A. Dobbins

                                                /s/ Clay C. Scott, Jr.
                                       -----------------------------------------
                                       Clay C. Scott, Jr.

                                                 /s/ Charles Bo Price
                                       -----------------------------------------
                                       Charles Bo Price

                                                   /s/ George Venner
                                       -----------------------------------------
                                       George Venner

                                       44

<PAGE>   45

                                       I(3)S FUNDING I, L.L.C.

                                       By: GENEVA ASSOCIATES, L.L.C., Manager

                                       By:         /s/ Russ R. Myers
                                           -------------------------------------
                                           Russ R. Myers, Member-Manager

                                       45

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