Document:

EXHIBIT 4.2

                               RTIN HOLDINGS, INC.
                              (a Texas corporation)

                           SUBSCRIPTION AND INVESTMENT
                            REPRESENTATION AGREEMENT

RTIN Holdings, Inc.
3218 Page Rd.
Longview, TX 76506

Gentlemen:

                                    SECTION 1

1.1 Subscription.  The undersigned  hereby subscribes for and agrees to purchase
the  number of units set forth on the  signature  page,  each unit to consist of
eight (8) shares of the  Common  Stock,  $.01 par value per share  (the  "Common
Stock"),  of the  Company;  five  (5)  Series A 2003  Warrants  (the  "Series  A
Warrants");  five (5) Series B 2003  Warrants  (the  "Series B  Warrants"),  and
twenty-five  (25) Series C 2003  Warrants  (the "Series C Warrants" and together
with the  Series A  Warrants  and the  Series B  Warrants,  the  "Warrants"  and
together with the Common Stock,  the  "Securities")  of RTIN  Holdings,  Inc., a
Texas  corporation  (the  "Company"),  for the amount indicated on the signature
page hereof ("Purchase  Payment"),  on the terms and conditions described herein
in connection with the offering (the "Offering") of the Securities.  This letter
agreement  shall be  referred  to herein  as the  "Subscription  Agreement".  In
connection with this  subscription  and intending that the Company rely thereon,
the  undersigned  also  tenders  herewith  a  completed  and  executed  Investor
Suitability Questionnaire in the form attached hereto as Exhibit A.

1.2 Acceptance or Rejection of  Subscription.  The  undersigned  understands and
agrees that the Company  reserves the right to reject his  subscription  for the
Securities,  in whole or in part,  if in its  judgment,  the Company  deems such
action is in the best interests of the Company.

The undersigned understands and agrees that the Purchase Payment will be will be
paid to the Company  simultaneously  with the delivery of this  subscription  in
exchange for the issuance of Securities. The undersigned will not be entitled to
the  return  of any part of the  Purchase  Payment  after  the  issuance  of the
Securities.

1.3 Escrow  Agreement.  Simultaneously  with the execution of this  Subscription
Agreement,  the parties shall enter an escrow  agreement in the form attached as
Exhibit B hereto (the  "Subscription  Escrow Agreement") and shall (a) deliver a
copy of this Subscription  Agreement and the Subscription  Agreement to Harbour,
Smith,  Harris & Merritt,  PC (the "Escrow  Agent"),  (b) the undersigned  shall
deliver to the Escrow Agent the Purchase Amount in immediately  available funds,

<PAGE>

and  (c) the  Company  shall  deliver  to the  Escrow  Agent  one or  more  duly
authorized,  issued and executed certificates in the name of the undersigned, or
if the Company  otherwise has been  notified,  in the name of the  undersigned's
nominees,  representing the Shares and one or more duly  authorized,  issued and
executed  certificates  in the  name  of  the  undersigned,  or if  the  Company
otherwise  has  been  notified,  in  the  name  of the  undersigned's  nominees,
representing the Warrants.

                                    SECTION 2

2.1  Investor   Representations   and   Warranties.   The   undersigned   hereby
acknowledges,  represents  and  warrants  to, and agrees  with,  the  Company as
follows:

(a)      The  undersigned is acquiring the Securities for this own account,  for
         investment   purposes  only,  and  not  with  a  view  to  the  resale,
         distribution or fractionalization  thereof, in whole or in part, and no
         other person has or is intended to have a direct or indirect beneficial
         interest in the Securities.

(b)      The undersigned  acknowledges his  understanding  that the offering and
         sale of the Securities is intended to be exempt from registration under
         the  Securities  Act of 1933,  as  amended  (the  "Act"),  by virtue of
         Section  4(2) of the  Act.  In  furtherance  thereof,  the  undersigned
         represents  and warrants to and agrees with the Company and the Company
         as follows:

         (i) The undersigned has the financial ability to bear the economic risk
         of his investment in the Company  (including its possible total loss of
         the Purchase  Amount),  has adequate means of providing for his current
         needs and personal  contingencies  and has no need for  liquidity  with
         respect to the investment in the Company.

         (ii) No one has acted as his  purchaser  representative  in  connection
         with evaluating the merits and risks of an investment in the Company in
         general and the  suitability of the  investment for the  undersigned in
         particular.

         (iii) The undersigned has such knowledge and experience in business and
         financial  matters  as to be  capable  of  evaluating  the  risks of an
         investment  in the  Securities  and  has  obtained,  in  his  judgment,
         sufficient  information  from the  Company to  evaluate  the merits and
         risks of an investment in the Securities.

         (iv)  The  undersigned   hereby  reconfirms  as   representations   and
         warranties,  as though fully set forth herein,  each of the  statements
         and answers of the  undersigned  set forth in his Investor  Suitability
         Questionnaire (Exhibit "A").

         (v) The undersigned is not subscribing for Securities as a result of or
         subsequent to any advertisement, article, notice or other communication
         published in a newspaper,  magazine or similar media, or broadcast over
         television  or radio,  or presented  at any seminar or meeting,  or any
         solicitation  of a  purchase  by a person not  previously  known to the

                                       2
<PAGE>

         undersigned in connection with investments in securities generally.  No
         person will be paid any  compensation by the undersigned  (whether as a
         broker,  salesperson,   Purchaser  Representative,   or  in  any  other
         capacity) in connection with the undersigned's purchase of Securities.

(c)      The undersigned:

         (i) has been furnished a copy of or been given an opportunity to review
         the following documents (the "Company Documents"):

         (a)      Articles of Organization; (b) Bylaw;
         (c)      Annual  Report on Form 10-KSB for the year ended  December 31,
                  2001;
         (d)      Quarterly  Reports on Form 10-QSB for the periods  ended March
                  31, 2002, June 30, 2002, and September 30, 2002;
         (e)      Current  Reports on Form 8-K filed since December 31, 2001 (f)
                  Annual  Report on Form 10-KSB for the year ended  December 31,
                  2002.

         (ii) has had the  opportunity  to  obtain  any  additional  information
         relating  to the  Offering  and the Company  Documents,  and such other
         documentation  or  information   regarding  the  company  that  he  has
         requested, and is satisfied with such review. The undersigned agrees to
         hold such  information  in strict  confidence and indemnify the Company
         for any loss, cost or damage incurred by the Company as a result of the
         breach of such agreement.

         (iii) has been given the  opportunity  to ask  questions of and receive
         answers  from,  the Company and the officers of the Company  concerning
         the terms and  conditions of the Offering and other matters  pertaining
         to an investment in the Securities,  and has been given the opportunity
         to  obtain  such  additional   information   necessary  to  verify  the
         information  contained  in the  Offering  Memorandum  or that which was
         otherwise  provided in order for it to evaluate the merits and risks of
         an investment in the Company to the extent the Company and the officers
         of the  Company  possess  such  information  or can  acquire it without
         unreasonable  effort or expense,  and has not been  furnished any other
         Offering literature or prospectus, except as mentioned herein.

         (iv) has  determined  that the Securities are suitable for him and that
         he  understands  and can bear the  risks  of loss  associated  with the
         Company's intended business policies and the implementation thereof.

(d)      In making his decision to purchase the Securities herein subscribed
         for, the undersigned has relied solely upon independent investigations
         made by him. The undersigned is not relying on the Company with respect
         to the tax and other economic considerations involved in this
         investment.

                                       3
<PAGE>

(e)      The undersigned  represents,  warrants and agrees that he will not sell
         or otherwise transfer the Securities without registration under the Act
         or an exemption therefrom,  and fully understands that he must bear the
         economic  risks of his  investment  for an  indefinite  period  of time
         because,  among other reasons,  the Securities have not been registered
         under the Act or under  securities  laws of any  states  and  therefore
         cannot be resold,  pledged,  assigned  or  otherwise  disposed of until
         subsequently   registered  under  the  Act  and  under  the  applicable
         securities  laws of such states or an exemption  from  registration  is
         available. Except as set forth herein, the undersigned understands that
         the Company is under no  obligation  to register the  Securities on his
         behalf or to  assist  him in  complying  with any  exemption  from such
         registration under the Act.

(f)      If the  undersigned is a company,  partnership,  trust,  joint venture,
         employee benefit plan,  individual  retirement account,  Keogh Plan, or
         other  tax-exempt  entity,  it is  authorized  and qualified to make an
         investment  in the Company,  and the person  signing this  Agreement on
         behalf of such entity has been duly authorized by such entity to do so.

(g)      No representation of warranties have been made to the undersigned by
         the Company, an officer of the Company, or any other persons on behalf
         of such persons, other than as stated in this Agreement, and no oral or
         written information furnished to the undersigned or his advisor(s) in
         connection with the Offering was in any way inconsistent with the
         information stated in this Agreement or the Company Documents.

(h)      Any  information  which the  undersigned  has heretofore  furnished the
         Company with respect to its financial position and business experience,
         including,  without limitation,  responses to the Investor  Suitability
         Questionnaire, is correct and complete as of the date of this Agreement
         and if there should be any material change in such information prior to
         the  acceptance  of this  Agreement by the Company it will  immediately
         furnish such revised or corrected information to the Company.

2.2. Investor Awareness:  Risk Factors.  The undersigned  acknowledges and fully
understands the risks and  uncertainties of an investment in the Securities.  An
investment in the Securities is subject to all the risks inherent in business in
general and companies in  businesses  the same or similar to the business of the
Company and the additional, unique risks listed below:

(a)      No federal or state agency has passed upon the  Securities  or made any
         findings or  determination  as to the fairness of an  investment in the
         Securities.

                                       4
<PAGE>

(b)      The  undersigned  should be fully aware of the long-term  nature of his
         investment in the Company.  The Securities are not readily transferable
         because the Securities have not been registered with the Securities and
         Exchange Commissions or the agencies of any state.  Subscribers may not
         be able to liquidate their investment quickly and may be unable to find
         a buyer for the Securities on any  reasonable  terms.  Each  subscriber
         must  purchase  the  Securities  for his own  account,  for  investment
         purposes  only and not with a view  toward  resale  or  redistribution.
         Investors who need liquidity in their  investment  should not invest in
         the Securities.

(c)      The Articles of  Incorporation  and bylaws of the Company  provide that
         the Company must  indemnify  the  directors and officers of the Company
         against  liabilities  sustained  by them by reason of their  serving as
         directors or officers of the Company or its affiliates.

(d)      The  success  of the  Company  will be  particularly  dependent  on the
         efforts of Curtis A. Swanson.

(e)      The Securities offered hereby have not been registered under the Act or
         any applicable state securities laws, and are being offered and sold in
         reliance of the exemptions  from the  registration  of the Act (and any
         applicable  state  securities  laws).  The  Securities  are  subject to
         restrictions on  transferability  and resale and may not be transferred
         or resold  except as permitted  under the Act and such laws pursuant to
         registration  or  exemption  therefrom.  The Company does not intend to
         register  any of the  Securities  for  resale  under  the  Act  (or any
         applicable  state  securities  laws).  Accordingly,  no investor should
         purchase the Securities with funds which he may need to convert to cash
         in the foreseeable future.

                                    SECTION 3

3.1 Corporate Governance.  The Company agrees that (a) upon ten (10) days notice
from  Investor  subsequent  to the closing of this  Agreement;  the Company will
cause a single board seat to be made  available  to a nominee of  Investor.  The
nominee of the  majority  of the  Investor(s)  to the board will be added to the
vacant board seat within 10 days after  nomination by investor and acceptance of
nomination  by nominee.  The  investor's  nominee will then serve until the next
annual  meeting  of the  shareholders  at which  time  Rule 14-A  Proxy  will be
distributed to the shareholders of record of the Company for the election of the
board of directors for the following  year. At the option of the majority of the
Investor(s)  and acceptance by nominee this board member would serve as Chairman
of the Board during the service period.  In addition,  the Company  warrants and
agrees  that  simultaneously  with the  closing of the  transaction  represented
hereby that (b) the Board of  Directors  of the Company will take such action as
is  necessary  to cause  Larry  Wilson,  esq.  to replace  Carole A.  Swanson as
Secretary  of the  Corporation  and (c) Stanley L.  Swanson will resign as Chief
Executive Officer of the Company and Curtis A. Swanson will assume dual roles as
President / Chief Operating Officer and acting Chief Executive Officer.

                                       5
<PAGE>

3.2 No  Convertibles.  The Company  represents to DCSP and  Investors  that upon
closing of this  transaction  there will be no  Preferred  stock or  Convertible
Equity  securities  outstanding  of any kind  other  than  typical  options  and
Warrants already  disclosed to Investor(s),  nor will the Company issue any such
instruments  in the future  without the written  consent of the  majority of the
Investor(s).

3.3 Representation of Stanley L. Swanson Conversion of Rights to Acquire Shares.
Stanley  L.  Swanson  agrees  that upon the  closing of this  Agreement  he will
convert his existing  rights  granted May 6, 2002 as referenced in the Company's
SEC filings  under  "Related  Party  Transactions"  and through the date of this
Agreement for accrued payroll / compensation into the 1,107,356 shares of Common
Stock granted there under.

3.4  Representation of Curtis a. Swanson Conversion of Rights to Acquire Shares.
Curtis A. Swanson agrees that upon the closing of this Agreement he will convert
his existing  rights  granted May 6, 2002 as  referenced  in the  Company's  SEC
filings  under  "Related  Party  Transactions"  and  through  the  date  of this
Agreement for accrued payroll / compensation into the 1,092,644 shares of Common
Stock granted there under.

                                    SECTION 4

4.1. Indemnity: The undersigned hereby agrees to indemnify and hold harmless the
Company,  and each person, if any, who controls or is controlled by the Company,
within the meaning of Section 15 of the Act, against all loss, liability, claim,
damage,  and  expense  whatsoever  (including,  but not  limited to, any and all
expenses whatsoever reasonably incurred in investigating, preparing or defending
against any litigation  commenced or threatened or any claim whatsoever) arising
out of or based upon any false  representation  or warranty or breach or failure
by the undersigned to any of the foregoing in connection with this transaction.

4.2.  Further  Agreements:  The  undersigned  agrees to execute and deliver such
other documents and instruments as the Company shall reasonably request.

4.3  Modification:  Neither  this  Agreement  nor any  provision  hereof  may be
modified, discharged, or terminated except by an instrument in writing signed by
the party against whom any waiver, change, discharge or termination is sought.

4.4 Notices:  Any notice,  demand or other  communication which any party hereto
may be required,  or may elect, to give to anyone interested  hereunder shall be
sufficiently  given if (a) deposited,  postage prepaid,  in a United States mail
letter box, registered or certified mail, return receipt requested, addressed to
such  address  as may be  given  herein,  or (b)  delivered  personally  at such
address.

4.5 Binding Effect: Except as otherwise provided herein, this Agreement shall be
binding   upon  and  inure  to  the   parties   and  their   heirs,   executors,
administrators,  successors, legal representatives and permitted assigns. If the
undersigned shall be joint and several,  this Agreement and the representations,
warranties  and  acknowledgements  herein  shall be  deemed to be made by and be
binding  upon each such  person and his  heirs,  executors,  administrators  and
successors.

                                       6
<PAGE>

4.6 Entire Agreement:  This Agreement  contains the entire  understanding of the
parties   with   regard  to  the  subject   matter   hereof  and  there  are  no
representations,  covenants  or other  agreements  except as stated or  referred
herein.

4.7  Prohibitions  on  Cancellation:   Assignability:   The  undersigned  hereby
acknowledges and agrees that, except as may be specifically  provided herein, or
by  applicable  law, the  undersigned  is not  entitled to cancel,  terminate or
revoke this Agreement,  and this Agreement shall survive his death or disability
or  any  permitted   assignment  of  his  Securities.   This  Agreement  is  not
transferable or assignable by the undersigned.

4.8  Applicable  Law:  This  Agreement  shall be  governed by and  construed  in
accordance with the laws of the State of Texas  applicable to contracts made and
to be performed entirely within such state.

4.9 Gender:  All pronouns  contained herein and any variations  thereof shall be
deemed to refer to masculine,  feminine,  or neuter,  singular or plural, as the
identity of the parties hereto may require.

4.10  Counterparts:  This Agreement may be executed  through the use of separate
signature pages or in any number of counterparts,  and each of such counterparts
shall,  for all  purposes,  constitute  one  Agreement  binding on all  parties,
notwithstanding that all parties are not signatories to the same counterpart.

4.11 Reliance:  The representations,  warranties,  agreements,  undertakings and
acknowledgements  made by the  undersigned  in this  Agreement are made with the
intent that they be relied  upon by the Company and the  officers of the Company
in determining the  undersigned's  suitability as a purchaser of the Securities,
and shall survive the acceptance of this subscription by the company.

                         [signatures on following page]

                                       7
<PAGE>

IN WITNESS  WHEREOF,  the undersigned has (have) executed this  Subscription and
Investment Representation Agreement on +30.

$
 ---------------------------                         ---------------------------
     (Purchase Payment)                                      (No. of Units)

                        If Subscriber is an Individual:

                                                 -------------------------------
                                                                       Signature

                         If there is a Joint Subscriber
  (Each Joint Subscriber must complete an Investor Suitability Questionnaire)

                                                 -------------------------------
                                                   Signature of Joint Subscriber

                           If Subscriber is an Entity

                                            Name:
                                                 -------------------------------

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

               Subscription accepted as of                         .
                                          -------------------------

                               RTIN HOLDINGS, INC.

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

                                       8
<PAGE>

                                                                       Exhibit A

                               RTIN HOLDINGS, INC.
                              (a Texas corporation)

                       INVESTOR SUITABILITY QUESTIONNAIRE

         This  questionnaire  is  required  to ensure  that the  Offering of the
Company's  Securities  complies with the rules and regulations of the Securities
and Exchange  Commission  ("SEC") and applicable  state  securities  commissions
governing non-public offerings.  Each investor or joint subscriber must complete
an  Investor   Suitability   Questionnaire.   All   information   will  be  kept
confidential.

                                     Part I

1. Name:
         -----------------------------------------------------------------------
         (full legal name of individual,  Company,  trust,  partnership or other
          entity)

2. Residence Address or Principal Business Address:
                                                     ---------------------------
                        (street and number)

--------------------------------------------------------------------------------
(city, state and zip code)                        (area code) (telephone number)

3. Type of Entity:

   ___      Individual                ___      Partnership
   ___      Trust                     ___      Corporation
   ___      Estate                    ___      Limited Liability Company
   ___      Limited Partnership       ___      Other Group

5. Other states where residence or business address is maintained:

6. Social Security Number or Employer EIN:
                                           -------------------------------------

7. If subscriber is a company, partnership, trust or other entity, please attach
a copy of the Articles of Incorporation,  Bylaws,  Partnership Agreement,  Trust
Instrument, or other documents showing:

         a.       that the entity is authorized to make this investment, and

         b.       that  the  individual(s)  signing  the  Subscription  and  the
                  Investment  Representation  Agreement  are  authorized to take
                  such action on behalf of the entity.

                                       9
<PAGE>

                                     Part II

Please acknowledge that you are an accredited investor by placing your initials
on the line(s) next to the descriptions that describe you

____ An  individual  whose net worth  together  with that of his spouse  exceeds
$1,000,000.

____ An individual  who had  individual  income in excess of $200,000 in each of
the two most  recent  years or joint  income  with that  individual's  spouse in
excess of $300,000 in each of those  years who  reasonably  expects to reach the
same income level this year.

____ A bank as defined in Section  3(a)(2) of the  Securities  Act, or a savings
and loan  association or other  institution as defined in Section  3(a)(5)(A) of
the  Securities  Act whether  acting in its  individual  capacity  or  fiduciary
capacity.

____ A broker or dealer registered  pursuant to Section 15 of the Securities Act
of 1934.

____ An insurance company as defined in Section 2(13) of the Securities Act.

____ An investment  company  registered under the Investment Company Act of 1940
or a business development company as defined under Section 2(a)(48) of that Act.

____ A Small  Business  Investment  Company  licensed by the U.S. Small Business
Administration under Section 301(c) or (d) of the Small Business Act of 1958.

____ An employee  benefit  plan  within the  meaning of Title I of the  Employee
Retirement Income Security Act of 1974; if:

         a. The  decision to invest in the Company is made by a plan  fiduciary,
         as  defined  in  Section  3(21) of such  Act,  which is  either a bank,
         savings  and  loan  association,   insurance  company,   or  registered
         investment advisor; or

         b. The plan has total assets in excess of $5,000,000; or

         c. The plan is a  self-directed  plan with  investment  decisions  made
         solely by persons who are accredited investors.

____ A private business  development company as defined as Section 202(a)(22) of
the Investment Advisors Act of 1940.

____ A charitable  organization  described in Section  501(c)(3) of the Internal
Revenue Code, Company, or similar business trust or partnership, not formed with
the specific purpose of acquiring the securities, with total assets in excess of
$5,000,000.

                                       10
<PAGE>

____ A trust,  with  total  assets in excess of  $5,000,000,  not formed for the
specific  purpose of acquiring the  Securities,  whose purchase is directed by a
sophisticated person as described in Rule 506(b)(2)(ii) of the Securities Act.

____ An entity in which all of the equity owners are accredited investors.

                        PART III INVESTOR SOPHISTICATION

Are you are a "sophisticated investor"?

               ___      YES                       ___      NO

A subscriber may qualify as a  sophisticated  investor if he is a person who has
such  knowledge  of finance,  securities  and  investments  generally,  and such
experience  and skill in  investments  based on actual  participation,  as to be
aware of and  appreciate the risks of investing in the Company and the financial
capacity such that an investment in the Company is not material when compared to
his total financial capacity. Even though a person lacks the requisite knowledge
or experience,  he may be eligible to invest in the Company if he is represented
by a  representative  with such  knowledge and  experience  who has not business
relationship with the Company and is compensated only by such investor.

If you answered "yes", please provide a personal balance sheet and a description
of your personal investments.

If you are  represented by a  representative  on whom you are relying to provide
substantial  knowledge  and  experience  in  connection  with this  purchase  or
investment please provide the following information:

         Name:
         Company Name:
         Address:

         Telephone:

         Qualifications:

                                       11
<PAGE>

                                PART IV SIGNATURE

--------------------------------------------------------------------------------
               If Subscriber is an Individual or Joint Subscriber:

---------------------------                    ---------------------------------
      Print Name                                           Signature

--------------------------------------------------------------------------------
                           If Subscriber is an Entity

                                           By:
---------------------------                    ---------------------------------
  Print Name of Entity                                Authorized Signatory

---------------------------                    ---------------------------------
     Print Name of                                          Title
  Authorized Signatory
--------------------------------------------------------------------------------
             If Subscriber is Represented by an Investment Advisor:

                                           By:
---------------------------                    ---------------------------------
  Print Name of Entity                                Authorized Signatory

---------------------------                    ---------------------------------
     Print Name of                                          Title
  Authorized Signatory
--------------------------------------------------------------------------------

                                       12EXHIBIT 4.3

THE SECURITIES  REPRESENTED BY THIS WARRANT HAVE NOT BEEN  REGISTERED  UNDER THE
SECURITIES ACT OF 1933, AS AMENDED,  OR APPLICABLE  STATE  SECURITIES  LAWS. THE
SECURITIES  HAVE BEEN ACQUIRED FOR  INVESTMENT  AND MAY NOT BE OFFERED FOR SALE,
SOLD,  TRANSFERRED  OR  ASSIGNED  IN THE  ABSENCE OF AN  EFFECTIVE  REGISTRATION
STATEMENT FOR THE SECURITIES  UNDER THE  SECURITIES ACT OF 1933, AS AMENDED,  OR
APPLICABLE STATE SECURITIES LAWS, OR AN OPINION OF COUNSEL IN FORM AND SUBSTANCE
REASONABLY ACCEPTABLE TO THE ISSUER THAT REGISTRATION IS NOT REQUIRED UNDER SAID
ACT OR  APPLICABLE  STATE  SECURITIES  LAWS OR UNLESS SOLD  PURSUANT TO RULE 144
UNDER SAID ACT. ANY SUCH OFFER,  SALE,  ASSIGNMENT  OR TRANSFER MUST ALSO COMPLY
WITH THE APPLICABLE STATE SECURITIES LAWS.  NOTWITHSTANDING THE FOREGOING,  THIS
SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT.

                              RTIN HOLDINGS, INC.

                 SERIES A 2003 WARRANT TO PURCHASE COMMON STOCK

Warrant No.: SAW______________                  Number of Shares: ______________

                 Date of Original Issuance: ______________, 2003

RTIN Holdings, Inc., a Texas corporation (the "Company"), hereby certifies that,
for good and valuable  consideration,  the receipt and  sufficiency of which are
hereby  acknowledged,  _________________________________,  the registered holder
hereof or its  permitted  assigns,  is entitled,  subject to the terms set forth
below, to purchase from the Company upon surrender of this Warrant,  at any time
or times on or after the Vesting  Date (as defined  below),  but not after 11:59
P.M.    Central   Time   on   the   Expiration    Date   (as   defined   herein)
________________________  (___________________) fully paid non-assessable shares
of Common Stock (as defined herein) of the Company (the "Warrant Shares") at the
purchase price as defined in Section 1(b)(xi)).

         Section 1.

                  (a) Definitions. The following words and terms as used in this
Warrant shall have the following meanings:

                  (i) "Common Stock" means (i) the Company's  common stock,  par
value $.01 per share,  and (ii) any capital  stock into which such Common  Stock
shall have been changed or any capital stock  resulting from a  reclassification
of such Common Stock.

<PAGE>

                  (ii)  "Convertible  Securities"  means any stock or securities
(other than Options) directly or indirectly convertible into or exchangeable for
Common Stock.

                  (iii)  "Expiration  Date"  means the date three (3) years from
the Vesting  Date or, if such date falls on a  Saturday,  Sunday or other day on
which banks are required or  authorized to be closed in the State of Texas or on
which  trading  does  not take  place on the  principal  exchange  or  automated
quotation  system on which the Common  Stock is traded (a  "Holiday"),  the next
date that is not a Holiday.

                  (iv)  "Options"  means any  rights,  warrants  or  options  to
subscribe for or purchase Common Stock or Convertible Securities.

                  (v) "Other  Securities"  means  those  warrants of the Company
issued prior to, and outstanding on, the date of issuance of this Warrant.

                  (vi)  "Person"  means  a  natural  person,  a  partnership,  a
corporation,  a limited  liability  company,  an  association  or a joint  stock
company,  a  trust,  a  joint  venture,  an  unincorporated  organization  or  a
governmental  agency  or any  department,  or agency  or  political  subdivision
thereof.

                  (vii)  "Securities  Act" means the  Securities Act of 1933, as
amended and the rules and regulations promulgated thereunder.

                  (viii)  "Vesting  Date"  means the date on which this  Warrant
becomes exercisable, if at all, as set forth in Section 9.

                  (x)  "Warrant"  means this Warrant and all Warrants  issued in
exchange, transfer or replacement of any thereof.

                  (ixi) "Warrant Exercise Price" means $1.50 per share,  subject
to adjustment as provided in Section 8.

         Section 2. Exercise of Warrant.

         (a) Subject to the terms and  conditions  hereof,  this  Warrant may be
exercised by the holder hereof then  registered on the books of the Company,  in
whole  or in part,  at any time on any  business  day on or after  the  close of
business  on the  Vesting  Date  and  prior to 11:59  P.M.  Central  Time on the
Expiration  Date  by (i)  delivery  of a  written  notice,  in the  form  of the
subscription  notice  attached as Exhibit A hereto (the "Exercise  Notice"),  of
such holder's election to exercise this Warrant,  which notice shall specify the
number of Warrant Shares to be purchased,  (ii) (A) payment to the Company of an
amount equal to the Warrant  Exercise Price  multiplied by the number of Warrant
Shares as to which this Warrant is being exercised (plus any applicable issue or
transfer  taxes) (the  "Aggregate  Exercise  Price") in cash or by check or wire
transfer or (B) by notifying  the Company  that this Warrant is being  exercised

                                       2
<PAGE>

pursuant  to a Cashless  Exercise  (as defined in Section  2(e)),  and (iii) the
surrender to a common carrier for delivery to the Company as soon as practicable
following  such date,  this  Warrant  (or an  indemnification  undertaking  with
respect  to  this  Warrant  in the  case of its  loss,  theft  or  destruction);
provided,  that if such  Warrant  Shares are to be issued in any name other than
that of the registered  holder of this Warrant,  such issuance shall be deemed a
transfer and the  provisions of Section 7 shall be  applicable.  In the event of
any exercise of the rights  represented by this Warrant in compliance  with this
Section 2(a), a certificate or certificates for the Warrant Shares so purchased,
in such denominations as may be requested by the holder hereof and registered in
the name of, or as directed by, the holder,  shall be delivered at the Company's
expense to, or as directed  by,  such holder as soon as  practicable,  and in no
event later than two business days, after the Company's  receipt of the Exercise
Notice,  the Aggregate  Exercise  Price and this Warrant (or an  indemnification
undertaking  with  respect  to this  Warrant  in the case of its loss,  theft or
destruction).  Upon delivery of the Exercise Notice and Aggregate Exercise Price
referred to in clause (ii)(A) above or notification to the Company of a Cashless
Exercise referred to in Section 2(d), the holder of this Warrant shall be deemed
for all  corporate  purposes  to have become the holder of record of the Warrant
Shares with respect to which this Warrant has been  exercised,  irrespective  of
the date of  delivery of this  Warrant as required by clause  (iii) above or the
certificates evidencing such Warrant Shares.

         (b) Unless the rights represented by this Warrant shall have expired or
shall have been fully  exercised,  the Company shall, as soon as practicable and
in no event  later than five  business  days after any  exercise  and at its own
expense, issue a new Warrant identical in all respects to this Warrant exercised
except it shall  represent  rights to  purchase  the  number of  Warrant  Shares
purchasable  immediately  prior to such exercise  under this Warrant  exercised,
less the  number of  Warrant  Shares  with  respect  to which  such  Warrant  is
exercised.

         (c) No  fractional  shares  of Common  Stock are to be issued  upon the
exercise of this Warrant, but rather the number of shares of Common Stock issued
upon  exercise of this Warrant  shall be rounded up or down to the nearest whole
number.

         (d)  Notwithstanding  anything  contained  herein to the contrary,  the
holder of this Warrant may, at its  election  exercised in its sole  discretion,
exercise  this  Warrant  in whole or in part  and,  in lieu of  making  the cash
payment  otherwise  contemplated to be made to the Company upon such exercise in
payment of the  Aggregate  Exercise  Price,  elect  instead to receive upon such
exercise the "Net Number" of shares of Common Stock determined  according to the
following formula (a "Cashless Exercise"):

         Net Number = (A x B) - (A x C)
                      -----------------
                              B
             For purposes of the foregoing formula:

                                       3
<PAGE>

                           A= the total number shares with respect to which this
                           Warrant is then being exercised.

                           B= the last  reported  sale  price  (as  reported  by
                           Bloomberg)   of  the   Common   Stock   on  the  date
                           immediately   preceding  the  date  of  the  Exercise
                           Notice.

                           C= the Warrant  Exercise  Price then in effect at the
                           time of such exercise.

         Section 3. Covenants as to Common Stock.  The Company hereby  covenants
and agrees as follows:

         (a) This Warrant is, and any  Warrants  issued in  substitution  for or
replacement  of this Warrant will upon issuance be, duly  authorized and validly
issued.

         (b) All Warrant  Shares  which may be issued  upon the  exercise of the
rights represented by this Warrant will, upon issuance, be validly issued, fully
paid and  non-assessable and free from all taxes, liens and charges with respect
to the issue thereof.

         (c) During  the period  within  which the  rights  represented  by this
Warrant may be  exercised,  the Company  will at all times have  authorized  and
reserved at least 100% of the number of shares of Common Stock needed to provide
for the  exercise of the rights  then  represented  by this  Warrant and the par
value of said shares  will at all times be less than or equal to the  applicable
Warrant Exercise Price.

         (d) The  Company  shall  promptly  secure the  listing of the shares of
Common  Stock  issuable  upon  exercise  of  this  Warrant  upon  each  national
securities  exchange or automated quotation system, if any, upon which shares of
Common  Stock are then  listed  (subject to  official  notice of  issuance  upon
exercise of this  Warrant)  and shall  maintain,  so long as any other shares of
Common Stock shall be so listed, such listing of all shares of Common Stock from
time to time issuable  upon the exercise of this Warrant;  and the Company shall
so list on each national  securities  exchange or automated quotation system, as
the case may be, and shall maintain such listing of, any other shares of capital
stock of the Company  issuable  upon the exercise of this Warrant if and so long
as any  shares of the same  class  shall be listed on such  national  securities
exchange or automated quotation system.

         (e) The Company will not, by amendment of its Articles of Incorporation
or  through  any  reorganization,  transfer  of assets,  consolidation,  merger,
dissolution,  issue or sale of securities,  or any other voluntary action, avoid
or seek to  avoid  the  observance  or  performance  of any of the  terms  to be
observed  or  performed  by it  hereunder,  but will at all times in good  faith
assist in the  carrying  out of all the  provisions  of this  Warrant and in the
taking of all such action as may  reasonably  be requested by the holder of this

                                       4
<PAGE>

Warrant in order to protect the exercise privilege of the holder of this Warrant
against dilution or other  impairment,  consistent with the tenor and purpose of
this  Warrant.  The Company (i) will not increase the par value of any shares of
Common Stock  receivable  upon the  exercise of this  Warrant  above the Warrant
Exercise  Price  then in effect,  and (ii) will take all such  actions as may be
necessary or appropriate in order that the Company may validly and legally issue
fully paid and  nonassessable  shares of Common  Stock upon the exercise of this
Warrant.

         (f) This  Warrant  will be binding  upon any entity  succeeding  to the
Company by merger,  consolidation or acquisition of all or substantially  all of
the Company's assets.

         Section 4. Taxes.  The Company shall pay any and all taxes which may be
payable with  respect to ----- the issuance and delivery of Warrant  Shares upon
exercise of this Warrant.

         Section 5. Warrant Holder Not Deemed a Stockholder. Except as otherwise
specifically  provided  herein,  no holder,  as such,  of this Warrant  shall be
entitled to vote or receive  dividends  or be deemed the holder of shares of the
Company  for any  purpose,  nor shall  anything  contained  in this  Warrant  be
construed  to confer  upon the holder  hereof,  as such,  any of the rights of a
stockholder of the Company or any right to vote, give or withhold consent to any
corporate action (whether any reorganization,  issue of stock,  reclassification
of stock,  consolidation,  merger,  conveyance or otherwise),  receive notice of
meetings,  receive dividends or subscription rights, or otherwise,  prior to the
issuance to the holder of this Warrant of the Warrant  Shares which he or she is
then  entitled to receive  upon the due exercise of this  Warrant.  In addition,
nothing contained in this Warrant shall be construed as imposing any liabilities
on such holder to purchase  any  securities  (upon  exercise of this  Warrant or
otherwise)  or as a stockholder  of the Company,  whether such  liabilities  are
asserted by the Company or by  creditors of the  Company.  Notwithstanding  this
Section 5, the Company  will  provide the holder of this  Warrant with copies of
the same notices and other  information given to the stockholders of the Company
generally, contemporaneously with the giving thereof to the stockholders.

         Section 6.  Representations of Holder.  The holder of this Warrant,  by
the  acceptance  hereof,  represents  that it is acquiring  this Warrant and the
Warrant  Shares  for its own  account  for  investment  only and not with a view
towards,  or for resale in connection  with, the public sale or  distribution of
this  Warrant or the Warrant  Shares,  except  pursuant to sales  registered  or
exempted  under the  Securities  Act;  provided,  however,  that by  making  the
representations herein, the holder does not agree to hold this Warrant or any of
the Warrant Shares for any minimum or other specific term and reserves the right
to dispose of this Warrant and the Warrant Shares at any time in accordance with
or pursuant to a  registration  statement or an exemption  under the  Securities
Act. The holder of this Warrant further represents,  by acceptance hereof, that,
as of this date, such holder is an "accredited investor" as such term is defined
in Rule 501(a) of  Regulation  D  promulgated  by the  Securities  and  Exchange
Commission under the Securities Act (an "Accredited Investor"). Upon exercise of

                                       5
<PAGE>

this Warrant, the holder shall, if requested by the Company, confirm in writing,
in a form satisfactory to the Company,  that the Warrant Shares so purchased are
being acquired  solely for the holder's own account and not as a nominee for any
other party, for investment,  and not with a view toward  distribution or resale
and that such holder is an Accredited Investor.  If such holder cannot make such
representations  because  they  would  be  factually  incorrect,  it  shall be a
condition to such  holder's  exercise of this  Warrant that the Company  receive
such other  representations  as the Company  considers  reasonably  necessary to
assure the Company that the  issuance of its  securities  upon  exercise of this
Warrant shall not violate any United States or state securities laws.

         Section 7. Ownership and Transfer.

         (a) The Company shall maintain at its principal  executive  offices (or
such other office or agency of the Company as it may  designate by notice to the
holder hereof),  a register for this Warrant,  in which the Company shall record
the name and address of the person in whose name this  Warrant has been  issued,
as well as the name and  address of each  transferee.  The Company may treat the
person in whose name any Warrant is  registered on the register as the owner and
holder thereof for all purposes, notwithstanding any notice to the contrary, but
in all events  recognizing  any transfers  made in accordance  with the terms of
this Warrant.

         (b) This  Warrant  and the  rights  granted  to the  holder  hereof are
transferable, in whole or in part, upon surrender of this Warrant, together with
a properly  executed  warrant  power in the form of  Exhibit B attached  hereto;
provided,  however,  that any  transfer  or  assignment  shall be subject to the
conditions set forth in Section 7(c) below.

         (c) The holder of this  Warrant  understands  that this Warrant has not
been and is not expected to be, registered under the Securities Act or any state
securities laws, and may not be offered for sale, sold,  assigned or transferred
unless (a)  subsequently  registered  thereunder,  or (b) such holder shall have
delivered to the Company an opinion of counsel, in generally acceptable form, to
the effect that the securities to be sold,  assigned or transferred may be sold,
assigned  or  transferred  pursuant  to an  exemption  from  such  registration;
provided  that  (i) any sale of such  securities  made in  reliance  on Rule 144
promulgated  under the  Securities  Act may be made only in accordance  with the
terms of said Rule and further,  if said Rule is not  applicable,  any resale of
such securities  under  circumstances in which the seller (or the person through
whom the sale is made)  may be  deemed  to be an  underwriter  (as that  term is
defined in the Securities Act) may require  compliance with some other exemption
under the  Securities  Act or the rules and  regulations  of the  Securities and
Exchange  Commission  thereunder;  and (ii)  neither  the  Company nor any other
person is under any obligation to register the Warrants under the Securities Act
or any state  securities  laws or to comply with the terms and conditions of any
exemption thereunder.

         Section 8.  Adjustment of Warrant  Exercise Price and Number of Shares.
                     ----------------------------------------------------------

         (a) The Warrant Exercise Price and the number of shares of Common Stock
issuable  upon  exercise of this Warrant  shall be adjusted from time to time as
follows:

                                       6
<PAGE>

                  (i) Adjustment of Warrant  Exercise Price upon  Subdivision or
Combination  of  Common  Stock.  If the  Company  at any time  after the date of
issuance  of this  Warrant  subdivides  (by any  stock  split,  stock  dividend,
recapitalization  or otherwise) one or more classes of its outstanding shares of
Common  Stock into a greater  number of shares,  the Warrant  Exercise  Price in
effect immediately prior to such subdivision will be proportionately reduced and
the number of shares of Common Stock  obtainable  upon  exercise of this Warrant
will be proportionately  increased. If the Company at any time after the date of
issuance  of this  Warrant  combines  (by  combination,  reverse  stock split or
otherwise) one or more classes of its outstanding  shares of Common Stock into a
smaller number of shares, the Warrant Exercise Price in effect immediately prior
to such combination will be  proportionately  increased and the number of shares
of Common Stock obtainable upon exercise of this Warrant will be proportionately
decreased.

                  (ii) Adjustment for Common Stock Dividends and  Distributions.
If the  Company at any time or from time to time after the date of  issuance  of
this Warrant makes, or fixes a record date for the  determination  of holders of
Common Stock entitled to receive,  a dividend or other  distribution  payable in
additional shares of Common Stock, in each such event the Warrant Exercise Price
in effect  immediately  prior to such issuance or, in the event such record date
is fixed as of the close of business on such record date will be proportionately
decreased and the number of shares of Common Stock  obtainable  upon exercise of
this Warrant will be  proportionately  increased as of the time of such issuance
or, in the event such record date is fixed,  as of the close of business on such
record date.

                  (iii)   Adjustment   for   Reclassification,    Exchange   and
Substitution.  If at any time or from time to time after the date of issuance of
this Warrant, the Common Stock is changed into the same or a different number of
shares  of  any  class  or  classes  of  stock,   whether  by  recapitalization,
reclassification  or  otherwise  (other  than an  acquisition,  asset  transfer,
subdivision or combination of shares,  stock dividend,  reorganization,  merger,
consolidation,  or sale of assets  provided for elsewhere in this Section 8(a)),
in any such event the holder  hereof shall have the right  thereafter to convert
such stock into the kind and amount of stock and other  securities  and property
receivable  upon  such  recapitalization,  reclassification  or other  change by
holders of the maximum  number of shares of Common  Stock into which such shares
of  Common  Stock  could  have  been   converted   immediately   prior  to  such
recapitalization,  reclassification or change, all subject to further adjustment
as provided  herein or with respect to such other  securities or property by the
terms thereof.

                  (iv)  Reorganizations,  Mergers,  Consolidations  or  Sales of
Assets.  If at any time or from time to time after the date of  issuance of this
Warrant,  there is a capital  reorganization  of the Common Stock (other than an
acquisition,  asset transfer,  recapitalization,  or  subdivision,  combination,
reclassification,  exchange, or substitution of shares provided for elsewhere in
this Section 8(a)), as a part of such capital reorganization, provision shall be
made so that the holder of this Warrant shall  thereafter be entitled to receive
upon  exercise  hereof  the  number of shares  of stock or other  securities  or
property  of the  Company  to which a holder  of the  number of shares of Common

                                       7
<PAGE>

Stock deliverable upon exercise  immediately prior to such event would have been
entitled as a result of such capital  reorganization,  subject to  adjustment in
respect  of such stock or  securities  by the terms  thereof.  In any such case,
appropriate  adjustment  shall be made in the  application  of the provisions of
this  Section  8(a) with  respect to the rights of the holder  hereof  after the
capital reorganization to the end that the provisions of this Section 8 shall be
applicable after that event and be as nearly equivalent as practical.

                  (v) Sale of Common Stock Below Current Market Value. If at any
time or from time to time on or after the date of issuance of this Warrant,  the
Company  shall sell,  issue or dispose of any shares of Common  Stock at a price
per share that is less than 95% of the  Current  Market  Value  thereof or shall
issue or  distribute  any options,  warrants,  or other  Convertible  Securities
providing for the issuance of Common Stock at a price per share less than 95% of
the Current Market Value,  the Warrant  Exercise Price shall be  proportionately
decreased  and the number of shares of Common Stock  issuable  upon  exercise of
this Warrant shall be proportionately increased as of the date of such offering.

                  (vi)  Rounding  of  Calculations;   Minimum  Adjustment.   All
calculations  under this  Section  8(a) shall be made to the nearest  cent.  Any
provision of this Section 8 to the contrary  notwithstanding,  no  adjustment in
the Warrant  Exercise Price shall be made if the amount of such adjustment would
be less than one percent,  but any such amount  shall be carried  forward and an
adjustment  with respect  thereto shall be made at the time of and together with
any subsequent  adjustment which, together with such amount and any other amount
or amounts so carried forward, shall aggregate one percent or more.

                  (vii)  Timing of  Issuance  of  Additional  Common  Stock Upon
Certain  Adjustments.  In any case in which the  provisions of this Section 8(a)
shall  require that an adjustment  shall become  effective  immediately  after a
record date for an event,  the Company  may defer until the  occurrence  of such
event  issuing to the holder of this  Warrant  after such record date and before
the  occurrence  of such event the  additional  shares of Common  Stock or other
property  issuable or  deliverable  upon  exercise  by reason of the  adjustment
required  by such  event  over and  above the  shares  of Common  Stock or other
property issuable or deliverable upon such exercise before giving effect to such
adjustment;  provided,  however,  that the Company upon request shall deliver to
such holder a due bill or other appropriate  instrument evidencing such holder's
right to receive such additional  shares or other property,  and such cash, upon
the occurrence of the event requiring such adjustment.

         (b)  Statement  Regarding  Adjustments.  Whenever the Warrant  Exercise
Price shall be adjusted as provided in Section 8(a), and upon each change in the
number of shares of the Common Stock issuable upon exercise of this Warrant, the
Company  shall  forthwith  file,  at the office of any  transfer  agent for this
Warrant and at the  principal  office of the  Company,  a  statement  showing in
detail the facts  requiring such  adjustment and the Warrant  Exercise Price and
new number of shares issuable that shall be in effect after such adjustment, and
the Company shall also cause a copy of such  statement to be given to the holder
of this Warrant.  Each such  statement  shall be signed by the  Company's  chief
financial or accounting  officer.  Where appropriate,  such copy may be given in
advance and may be included as part of a notice  required to be mailed under the
provisions of Section 8(c).

                                        8

<PAGE>

         (c) Notice to Holders.  In the event the Company  shall propose to take
any action of the type  described in clause (iii) or (iv) of Section  8(a),  the
Company shall give notice to the holder of this Warrant, in the manner set forth
in Section 11, which notice shall  specify the record date, if any, with respect
to any such  action and the  approximate  date on which  such  action is to take
place. Such notice shall also set forth such facts with respect thereto as shall
be  reasonably  necessary  to indicate  the effect of such action (to the extent
such  effect may be known at the date of such  notice) on the  Warrant  Exercise
Price and the number,  kind or class of shares or other  securities  or property
which shall be  deliverable  upon exercise of this  Warrant.  In the case of any
action  which would  require the fixing of a record  date,  such notice shall be
given at least 10 days  prior  to the date so  fixed,  and in case of all  other
action,  such notice shall be given at least 15 days prior to the taking of such
proposed action.  Failure to give such notice, or any defect therein,  shall not
affect the legality or validity of any such action.

         (d) Current Market Price.  The "Current Market Price" shall mean, as of
any date, the average,  for each of the 20 consecutive  Trading Days immediately
prior to such date,  of either:  (i) the high and low sales prices of the Common
Stock on such Trading Day as reported on the  composite  tape for the  principal
national  securities  exchange on which the Common Stock may then be listed,  or
(ii) if the Common  Stock shall not be so listed on any such  Trading  Day,  the
high and low  sales  prices of Common  Stock in the  over-the-counter  market as
reported by the Nasdaq Stock Market for National Market Securities,  or (iii) if
the Common Shares shall not be included in the Nasdaq Stock Market as a National
Market Security on any such Trading Day, the representative bid and asked prices
at the end of such  Trading Day in such  market as reported by the Nasdaq  Stock
Market or (iv) if there be no such representative  prices reported by the Nasdaq
Stock Market, the lowest bid and highest asked prices at the end of such Trading
Day in the  over-the-counter  market as reported by the OTC Electronic  Bulletin
Board or National  Quotation Bureau,  Inc., or any successor  organization.  For
purposes of determining  Current Market Price, the term "Trading Day" shall mean
a day on which an amount greater than zero can be calculated with respect to the
Common Stock under any one or more of the foregoing  categories (i), (ii), (iii)
and (iv), and the "end" thereof,  for the purposes of categories (iii) and (iv),
shall  mean the exact  time at which  trading  shall  end on the New York  Stock
Exchange.  If the Current  Market  Price cannot be  determined  under any of the
foregoing  methods,  Current Market Price shall mean the fair value per share of
Common Stock on such date as determined by the Board of Directors in good faith,
irrespective of any accounting treatment.

         (e) Treasury  Stock.  For the purposes of this Section 3.1, the sale or
other  disposition  of any Common Stock of the Company  theretofore  held in its
treasury shall be deemed to be an issuance thereof.

         Section 9. Vesting, Termination Without Vesting. This Warrant shall not
be  exercisable  until the date (the  "Vesting  Date") on which the  Company has
completed  an audit of the books and records as of December 31, 2002 and for the

                                       9
<PAGE>

twelve months then ended and received an opinion of Heard, McElroy & Vestal, LLP
regarding the preparation of such financial statements, and shall be exercisable
from and after the Vesting Date only with respect to the following percentage of
the total Warrants represented hereby:

                        Percentage of Total = ($4,497,058- A) - $400,000 x 100
                                              --------------------------------
                                                   $500,000

                        Where:A  =  the  consolidated net pre-tax earning of the
                                    Company for the 12 months ended December 31,
                                    2002,   as   reported  on  the  date  hereof
                                    pursuant  to the audit  performed  by Heard,
                                    McElroy & Vestal LLP

In Example: If the audited  consolidated net pre-tax earnings of the Company for
the 12 months ended December 31, 2002,  were adjusted to $3,997,059 the warrants
shall be exercisable as follows:

Percentage  of Total =  ($4,497,058-$3,997,059)-400,000  x 100 =  19.99%  of the
Warrants issued hereunder $500,000

Provided,  however,  that in no event shall the percentage of the total pursuant
to the forgoing  formula exceed 100%. Any Warrants that do not vest as set forth
in this Section on the Vesting Date shall be deemed to be void and of no further
force or effect.

         Section 10.  Lost,  Stolen,  Mutilated or  Destroyed  Warrant.  If this
Warrant is lost, stolen,  mutilated or destroyed,  the Company shall, on receipt
of an indemnification undertaking,  issue a new Warrant of like denomination and
tenor as this Warrant so lost, stolen, mutilated or destroyed.

         Section  11.   Notice.   Any  notices,   consents,   waivers  or  other
communications required or permitted to be given under the terms of this Warrant
must be in writing and will be deemed to have been delivered:  (i) upon receipt,
when delivered  personally;  (ii) upon receipt, when sent by facsimile (provided
confirmation of transmission  is  mechanically or  electronically  generated and
kept on file by the sending party); or (iii) one business day after deposit with
a  nationally  recognized  overnight  delivery  service,  in each case  properly
addressed to the party to receive the same. The addresses and facsimile  numbers
for such communications shall be:

                                       10
<PAGE>

                  If to the Company:

                  RTIN Holdings, Inc.
                  3218 Page Rd.
                  Longview, Texas 75605
                  Telephone:        903-295-6800
                  Facsimile:        903-234-9777
                  Attention:        Curtis A. Swanson

                  If to the holder of this Warrant:  at the address on the books
                  and records of the Company.

or to such other address and/or facsimile number and/or to the attention of such
other person as the recipient  party has specified by prior written notice given
to each  other  party  five days  prior to the  effective  date of such  change.
Written  confirmation  of receipt  (A) given by the  recipient  of such  notice,
consent,  waiver or other  communication,  (B)  mechanically  or  electronically
generated by the sender's facsimile machine containing the time, date, recipient
facsimile  number  and an image of the first  page of such  transmission  or (C)
provided  by  a  nationally  recognized  overnight  delivery  service  shall  be
rebuttable evidence of personal service,  receipt by facsimile or receipt from a
nationally  recognized overnight delivery service in accordance with clause (i),
(ii) or (iii) above, respectively.

         Section  12.  Amendments.  This  Warrant  and any  term  hereof  may be
changed,  waived,  discharged,  or  terminated  only by an instrument in writing
signed by the party or holder hereof  against which  enforcement of such change,
waiver, discharge or termination is sought.

         Section 13.  Limitation on Number of Warrant Shares.  The Company shall
not be  obligated to issue any Warrant  Shares upon  exercise of this Warrant if
the  issuance of such  shares of Common  Stock would cause the Company to exceed
that number of shares of Common Stock which the Company may issue upon  exercise
of this Warrant (the "Exchange Cap") without breaching the Company's obligations
under the rules or regulations of Principal Market,  except that such limitation
shall  not apply in the event  that the  Company  obtains  the  approval  of its
stockholders  as  required by the  Principal  Market (or any  successor  rule or
regulation) for issuances of Common Stock in excess of such amount. In the event
the  Company  is  prohibited  from  issuing  Warrant  Shares  as a result of the
operation  of this Section 13, the Company  shall redeem for cash those  Warrant
Shares which can not be issued,  at a price equal to the difference  between the
Market Price and the Exercise Price of such Warrant Shares as of the date of the
attempted exercise.

         Section 14. Date. This Warrant, in all events, shall be wholly void and
of no effect after 11:59 PM Central  Time on the  Expiration  Date,  except that
notwithstanding  any other provisions  hereof, the provisions of Section 7 shall
continue in full force and effect  after such date as to any  Warrant  Shares or
other securities issued upon the exercise of this Warrant.

                                       11
<PAGE>

         Section 15.  Amendment and Waiver.  The  provisions of this Warrant may
only be  amended  upon a written  instrument  executed  by the  Company  and the
holders hereof.

         Section  16.  Descriptive  Headings;  Governing  Law.  The  descriptive
headings of the several Sections and paragraphs of this Warrant are inserted for
convenience  only and do not  constitute a part of this  Warrant.  The corporate
laws of the State of Texas  shall  govern all  issues  concerning  the  relative
rights of the Company and its stockholders.  All other questions  concerning the
construction,  validity, enforcement and interpretation of this Warrant shall be
governed by the internal  laws of the State of Texas,  without  giving effect to
any choice of law or conflict of law  provision or rule (whether of the State of
Texas or any other  jurisdictions)  that would cause the application of the laws
of any jurisdictions other than the State of Texas.

         Section 17. Successors and Assigns.  This Warrant shall be binding upon
and inure to the  benefit of the  parties and their  respective  successors  and
assigns,  including any purchasers of this Warrant. The Company shall not assign
this Warrant or any rights or  obligations  hereunder  without the prior written
consent of the holder of this  Warrant,  including by merger,  consolidation  or
reorganization.  The holder of this Warrant may assign some or all of its rights
hereunder to (i) without the consent of the  Company,  any person or entity who,
immediately  prior  to  such  assignment,  is an  affiliate  of such  holder  (a
"Permitted  Assignee")  and (ii) with the prior written  consent of the Company,
which consent shall not be unreasonably  withheld, to any person or entity which
is not a Permitted Assignee;  provided,  however, that any such assignment shall
not release the holder of this Warrant  from its  obligations  hereunder  unless
such  obligations  are assumed by such assignee and the Company has consented to
such  assignment  and  assumption,  which  consent  shall  not  be  unreasonably
withheld.  Notwithstanding anything to the contrary contained herein, the holder
of this  Warrant  shall be entitled to pledge the this Warrant and the shares of
Common Stock  issuable upon  exercise of this Warrant in connection  with a bona
fide margin account.

                               RTIN HOLDINGS, INC.

                               By:
                                  ----------------------------------------------
                                        Name:    Curtis A. Swanson
                                        Title:   President

                                       12
<PAGE>

                              EXHIBIT A TO WARRANT
                              --------------------

                                SUBSCRIPTION FORM

        TO BE EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS WARRANT

                               RTIN HOLDINGS, INC.

         The  undersigned   holder  hereby   exercises  the  right  to  purchase
_________________  of the  shares of Common  Stock  ("Warrant  Shares")  of RTIN
Holdings,  Inc., a Texas corporation (the "Company"),  evidenced by the attached
Warrant (the "Warrant"). Capitalized terms used herein and not otherwise defined
shall have the respective meanings set forth in the Warrant.

         1. Form of Warrant  Exercise Price.  The Holder intends that payment of
the Warrant Exercise Price shall be made as:

                  ____________    a    CASH    EXERCISE    with    respect    to
                                  _______________________ Warrant Shares; and/or

                  ____________    a    CASH    EXERCISE    with    respect    to
                                  _______________________ Warrant Shares (to the
                                  extent permitted by the terms of the Warrant).

         2. Payment of Warrant  Exercise Price. In the event that the holder has
elected a Cash Exercise with respect to some or all of the Warrant  Shares to be
issued pursuant hereto, the holder shall pay the sum of  $___________________ to
the Company in accordance with the terms of the Warrant.

         3. Delivery of Warrant Shares.  The Company shall deliver to the holder
__________ Warrant Shares in accordance with the terms of the Warrant.

Dated:  _________, ____

Printed Name:     ___________________________________

         By:      ___________________________________
                  Name:
                  Title:

                                       13
<PAGE>

                              EXHIBIT B TO WARRANT

                              FORM OF WARRANT POWER

FOR  VALUE  RECEIVED,  the  undersigned  does  hereby  assign  and  transfer  to
________________,  Federal Identification No. __________,  a warrant to purchase
____________  shares  of the  capital  stock  of RTIN  Holdings,  Inc.,  a Texas
corporation,  represented by warrant certificate no. _____, standing in the name
of the undersigned on the books of said corporation. The undersigned does hereby
irrevocably  constitute  and appoint  ______________,  attorney to transfer  the
warrants of said corporation, with full power of substitution in the premises.

Dated:  _________, ____

                                            Name:

                                            ____________________________________

                                            By: ________________________________

                                       14

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