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                                                                 EXHIBIT 10.23

                                    GUARANTY
                               (this "Guaranty")


1.   Guaranty. The undersigned Guarantors, jointly and severally, agree to
     pay THE CHASE MANHATTAN BANK, herein called "Lender" at 2200 Ross Avenue,
     Dallas, Texas 75201, or such other address as Lender designates, when due
     or declared due, the Guaranteed Indebtedness. This Guaranty is an
     unconditional, absolute and continuing guaranty of payment and performance
     and not of collection. "Guaranteed Indebtedness" means all debts,
     obligations, and liabilities of every kind and character, whether joint or
     several, contingent or otherwise, of UNITED STATES DATA CORPORATION and
     eMAKE CORPORATION (together with their respective successors, "Borrowers")
     now or hereafter existing in favor of Lender, including without limitation
     all liabilities arising under or from any note, open account, overdraft,
     letter of credit application, endorsement, surety agreement, guaranty,
     interest rate swap or other derivative product, acceptance, foreign
     exchange contract, or depository service contract, whether payable to
     Lender or to a third party and subsequently acquired by Lender. Guarantor
     and Lender specifically contemplate that Borrowers may hereafter become
     further indebted to Lender. Guaranteed Indebtedness includes any
     post-petition Interest and expenses (including, but not limited to,
     attorneys' fees) whether or not allowed as a claim against Borrower under
     any bankruptcy, insolvency, or other similar law. All Guaranteed
     Indebtedness is conclusively presumed to have been made or acquired in
     reliance on this Guaranty. This Guaranty does not in any way cancel, amend,
     discharge or limit any other guaranty executed by any Guarantor in favor of
     Lender. "Loan Documents" means any document or instrument evidencing,
     securing or executed in connection with Guaranteed Indebtedness.

2.   Termination of Guaranty. This Guaranty will continue to be in effect until
     final payment in full of the Guaranteed Indebtedness. Any of the Guarantors
     may terminate its liability for Guaranteed Indebtedness not in existence
     (whether by advance, commitment or otherwise) by delivering written notice
     to Lender, to be effective 5 business days after received under written
     receipt by Lender. After termination of this Guaranty, Guarantors will
     continue to be liable for all Guaranteed Indebtedness existing on the
     effective date of termination, and for all Guaranteed Indebtedness arising
     under any written agreement to make loans or extensions of credit entered
     into between Lender and Borrowers prior to the effective date of
     termination (whether or not Lender is contractually obligated to make the
     loans or extensions of credit).

3.   Continuation and Reinstatement of Guaranty. If any petition or other action
     is filed by or against any Borrower under the Bankruptcy Code or any other
     law relating to liquidation, insolvency or reorganization of debtors, or
     any other proceeding involving the estate or assets of the Guarantors, this
     Guaranty will remain effective or be reinstated, as the case may be (even
     if the Guaranteed Indebtedness has been paid in full), with respect to any
     payments or transfer of assets with respect to Guaranteed Indebtedness, to
     the extent such payment or transfers are or may be voidable or otherwise
     subject to rescission or return as preferential transfer, fraudulent
     conveyance or otherwise.

4.   Changes to Guaranteed Indebtedness. Guarantors authorized Lender,
     without notice, consent or demand, before and after termination of this
     Guaranty, without affecting Guarantors' liability hereunder: to take and
     hold security for the payment of this Guaranty and/or the Guaranteed
     Indebtedness, and exchange, enforce, foreclose, waive and release any
     security and to apply the proceeds of such security as Lender in its
     discretion determines; to obtain a guaranty of the indebtedness from any
     one or more other persons or entities whomsoever and at any time or times
     to enforce, waive, rearrange, modify, limit or release such other persons
     or entities from their obligations under such guaranties; and to extend,
     rearrange, supplement, modify, settle, compromise, discharge or subordinate
     any of the Guaranteed Indebtedness.

5.   Unenforceability or Uncollectibility of the Guaranteed Indebtedness.
     Guarantors will remain liable for the Guaranteed Indebtedness even though
     the Guaranteed Indebtedness may be unenforceable against or uncollectible
     from the Borrowers or any other person due to incapacity, lack of power or
     authority, discharge, or for any reason whatsoever.

6.   Guarantors Reporting. Guarantors will furnish to Lender such financial
     statements and other information relating to the financial condition,
     properties and affairs of Guarantors as Lender requests from time to time.

7.   Right of Offset. Guarantors grant to Lender a right of setoff against every
     deposit account and all personal property in Lender's possession, whether
     tangible or intangible, and any claim of Guarantors (whether individual,
     joint, several or otherwise) against Lender, now or hereafter existing.
     This right of setoff is not exclusive. In addition to Lender's right of
     setoff and as further security for this Guaranty and the Guaranteed
     Indebtedness, Guarantors hereby grant Lender a security interest in all
     deposits and all other accounts and property of Guarantors now or hereafter
     on deposit with or held by Lender and all other sums at any time credited
     by or owing from Lender to Guarantors. These rights and remedies of Lender
     are in addition to other rights and remedies (including, without
     limitation, other rights of setoff) which Lender may have.

8.   Automatic Acceleration. Guarantors agree that if the maturity of any
     Guaranteed Indebtedness is accelerated by bankruptcy or otherwise, such
     maturity shall also be deemed accelerated for the purpose of this Guaranty
     without demand on or notice to Guarantors.

9.   Waivers of Guarantors. Guarantors waive (i) diligence and promptness in
     preserving liability of any person on Guaranteed Indebtedness, and in
     collecting or bringing suit to collect Guaranteed Indebtedness; (ii) all
     rights of Guarantors under Rule 31, Texas Rules of Civil Procedure, or
     Chapter 34 of the Texas Business and Commerce Code, or Section 17.001 of
     the Texas Civil Practice and Remedies Code; (iii) to the extent each of the
     Guarantors is subject to the Texas Revised Partnership Act ("TRPA"),
     compliance by Lender with Section 3.05(d) of TRPA; (iv) protest; (v) notice
     of extensions, renewals, modifications, rearrangements and substitutions of
     Guaranteed Indebtedness; (vi) notice of acceptance of this agreement,
     creation of Guaranteed Indebtedness, failure to pay Guaranteed Indebtedness
     as it matures, any other default, adverse change in Borrowers' financial
     condition, release of substitution of collateral, subordination of Lender's
     rights in any collateral, and every other notice of every kind. If any part
     of the Guaranteed Indebtedness is secured by an interest in real property
     ("Real Property"), and such interest is foreclosed upon pursuant to a
     judicial or nonjudicial foreclosure sale, each of the Guarantors agrees
     that notwithstanding the provisions of Section 51.003, 51.004, and 51.005
     of the Texas Property Code (as amended from time to time), and to the
     extent permitted by law, Lender may seek a deficiency judgment from each of
     the Guarantors and any other party obligated on the Guaranteed Indebtedness
     equal to the difference between the amount owing the Guaranteed
     Indebtedness and the amount for which the Real Property was sold at
     judicial or nonjudicial foreclosure sale. Guarantors irrevocably waive and
     shall not seek to enforce or collect upon any rights which each of the
     Guarantors now has or may acquire against the Borrowers, either by way of
     subrogation, indemnity, reimbursement or contribution, for any amount paid
     under this Guaranty or by way of any other obligations of the Borrowers to
     Guarantors until 91 days after the Guaranteed Indebtedness is paid in full.

10.  Representations and Agreements. This Guaranty constitutes a legal, valid,
     binding obligation of and is enforceable against Guarantors. Each of the
     Guarantors has filed all federal and state tax returns which are required
     to be filed, and has paid all due and payable taxes and assessments against
     the property and income of Guarantors. Guarantors have determined that this
     Guaranty will benefit each of the Guarantors directly or indirectly. The
     value of the consideration received by Guarantors is reasonably worth at
     least as much as its liability hereunder and is fair and reasonably
     equivalent value for this Guaranty. No material adverse change has occurred
     in Guarantors' financial condition reflected in the last financial
     statement and application for credit provided to Lender. Guarantors have
     not relied and are not relying on Lender to provide to Guarantors
     information regarding Borrowers' assets or financial condition and Lender
     has no duty to provide such information.


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11. Applicable Law and Venue. This Guaranty is governed by Texas law. If any
    provision of this Guaranty is illegal or unenforceable, that illegality or
    unenforceability will not affect the remaining provisions of the Guaranty.
    GUARANTORS AND LENDER AGREE THAT THIS GUARANTY WILL BE PERFORMED IN THE
    COUNTY IN WHICH LENDER'S PRINCIPAL OFFICE IN TEXAS IS LOCATED, AND THAT SUCH
    COUNTY IS PROPER VENUE FOR ANY ACTION OR PROCEEDING BROUGHT BY THE GUARANTOR
    OR LENDER, WHETHER IN CONTRACT, TORT, OR OTHERWISE. ANY ACTION OR PROCEEDING
    AGAINST GUARANTORS MAY BE BROUGHT IN ANY STATE OR FEDERAL COURT IN SUCH
    COUNTY TO THE EXTENT NOT PROHIBITED BY APPLICABLE LAW. TO THE EXTENT
    PERMITTED BY APPLICABLE LAW GUARANTORS HEREBY IRREVOCABLY (A) SUBMIT TO THE
    NONEXCLUSIVE JURISDICTION OF SUCH COURTS, AND (B) WAIVE ANY OBJECTION MAY
    NOW OR HEREAFTER HAVE AS TO THE VENUE OF ANY SUCH ACTION OR PROCEEDING
    BROUGHT IN ANY SUCH COURT OR THAT ANY SUCH COURT IS AN INCONVENIENT FORUM.
    EACH OF THE GUARANTORS AGREES THAT SERVICE OR PROCESS UPON HE/SHE MAY BE
    MADE BY CERTIFIED OR REGISTERED MAIL, RETURN RECEIPT REQUESTED, AT HIS/HER
    ADDRESS SPECIFIED BELOW. LENDER MAY SERVE PROCESS IN ANY OTHER MANNER
    PERMITTED BY LAW AND MAY BRING ANY ACTION OR PROCEEDING AGAINST GUARANTORS
    OR WITH RESPECT TO ANY OF HIS PROPERTY IN COURTS IN OTHER PROPER
    JURISDICTIONS OR VENUES.

12. Notice. Any notice required or permitted under this Guaranty must be given
    in writing by United States mail, by hand delivery service, or by
    telegraphic, telex, telecopy or cable communications, sent to the intended
    addressee at the address shown in this Guaranty, or to such different
    address as the addressee designates by 10 days notice. Notice by United
    States mail will be effective when mailed. All other notices will be
    effective when received. Written confirmation of receipt will be conclusive.
    Notice of termination, as provided in Section 2, will not be deemed given
    until actually received by a commercial lending officer with the rank of
    Vice President or above at the address of Lender shown in this Guaranty.

13. Costs and Expenses. To the extent permitted by applicable law, Guarantors
    will pay on demand all attorney's fees and all other costs and expenses
    incurred by Leader in connection with the preparation, administration,
    enforcement, or collection of this Guaranty including but not limited to
    Lender's standard Documentation Preparation and Processing fees.

14. Miscellaneous. This Guaranty binds each of the Guarantors and their
    respective successors and assigns and benefits Lender. The term "Lender"
    also includes all successors and assigns of Lender. Guarantors may not
    assign their obligations under this Guaranty without the prior written
    consent of Lender. This Guaranty may be executed in multiple counterparts,
    and each counterpart will be deemed an original, without the need to produce
    any counterpart other than the one to be enforced. Any gender designation
    used herein includes all genders and the singular number includes the
    plural. Lender's delay or failure to exercise its rights is not a waiver of
    those rights. This Guaranty may not be amended except in writing signed by
    an authorized officer of Lender and no waiver will be effective unless it is
    in writing. Any waiver is applicable only for the specific situation for
    which it is given.


THIS GUARANTY IS executed as of December 15, 2000.

THIS GUARANTY REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES WITH
RESPECT TO GUARANTORS' GUARANTY OF GUARANTEED INDEBTEDNESS AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES. NO COURSE OF DEALING BETWEEN GUARANTORS AND LENDER,
NO COURSE OF PERFORMANCE, NO TRADE PRACTICES, AND NO EXTRINSIC EVIDENCE OF ANY
NATURE MAY BE USED TO CONTRADICT OR MODIFY ANY TERM OF THIS GUARANTY.

THERE ARE NO ORAL AGREEMENTS BETWEEN GUARANTORS AND LENDER.

GUARANTORS:

US DATA CORPORATION                           EMAKE SOLUTIONS INC.


By:    /s/ ROBERT A. MERRY                    By:    /s/ ROBERT A. MERRY
      -----------------------                       -----------------------
Name:  Robert A. Merry                        Name:  Robert A. Merry
      -----------------------                       -----------------------
Title: President and CEO                      Title: Chairman
      -----------------------                       -----------------------


ADDRESS OF GUARANTORS:

2435 North Central Expressway
Richardson, Texas 75080


LENDER: (Lender's signature is provided as its acknowledgement of the above as
the final written agreement between the parties.)

THE CHASE MANHATTAN BANK


By:    /s/ MAE REEVES
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Name:  Mae Reeves
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Title: Vice President
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