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                                                                   EXHIBIT 10.19

                       SENIOR SUBORDINATED PROMISSORY NOTE

$500,000.00                                                      AUGUST 13, 2002
                                                          OWINGS MILLS, MARYLAND

     FOR VALUE RECEIVED, Avatech Solutions, Inc., a Delaware corporation
("BORROWER"), hereby unconditionally promises to pay to the order of W. James
Hindman, a Maryland resident ("LENDER"), in lawful money of the United States of
America and in immediately available funds, the principal sum of $500,000.00 and
any unpaid accrued interest thereon, as set forth below.

     The following is a statement of the rights of Lender under this Senior
Subordinated Promissory Note (this "NOTE") and the conditions to which this Note
is subject, and to which Lender, by the acceptance of this Note, agrees:

     1.   PRINCIPAL REPAYMENT. This Note shall mature, and the entire unpaid
principal balance of this Note, together with all accrued and unpaid interest,
late charges and other fees hereon, shall be due and payable on July 1, 2003
(the "MATURITY DATE"), if not paid earlier as hereinafter provided. At any time
upon prior written notice to Lender, the Borrower may prepay without penalty, in
whole or in part, the principal sum, plus accrued interest to the date of
payment, of this Note.

     2.   INTEREST RATE. Borrower further promises to pay interest on the unpaid
principal balance of this Note, which interest shall accrue at a simple rate of
15.0% per annum beginning on the date hereof. Quarterly interest payments shall
be paid to Lender on or before each of September 30, 2002; December 31, 2002;
March 31, 2003; and June 30, 2003 or on such earlier date as the entire
principal amount shall become due and payable and shall be calculated on the
basis of a 365-day year for the actual number of days elapsed.

     3.   PLACE OF PAYMENT. All amounts payable hereunder shall be payable to
Lender at the following address: 2322 Nicodemus Road, Westminster, Maryland
21157.

     4.   APPLICATION OF PAYMENTS. All payments on this Note shall first be
applied to accrued interest and thereafter to the outstanding principal balance
hereof.

     5.   DEFAULT.

          5.1  EVENT OF DEFAULT. The occurrence of any one or more of the
following events shall constitute an event of default ("EVENT OF DEFAULT")
hereunder:

          (a)  Failure to pay, when due, the principal, any interest, or any
other sum payable hereunder;

          (b)  The admission by Borrower in writing of its inability to pay its
debts as such debts become due, or the making by Borrower of any general
assignment for the benefit of creditors;
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          (c)  The commencement by Borrower of any case, proceeding, or other
action seeking reorganization, arrangement, adjustment, liquidation,
dissolution, or composition of its debts under any law relating to bankruptcy,
insolvency, or reorganization, or relief of debtors, or seeking appointment of a
receiver, trustee, custodian, or other similar official for it or for all or any
substantial part of its property;

          (d)  The commencement of any case, proceeding, or other action against
Borrower seeking to have any order for relief entered against it as debtor, or
seeking reorganization, arrangement, adjustment, liquidation, dissolution, or
composition of Borrower's debts under any law relating to bankruptcy,
insolvency, reorganization, or relief of debtors, or seeking appointment of a
receiver, trustee, custodian, or other similar official for it or for all or any
substantial part of the property of Borrower, and (i) Borrower, by any act or
omission, indicates its consent to, approval of, or acquiescence in such case,
proceeding, or action, or (ii) such case, proceeding, or action results in the
entry of an order for relief which is not fully stayed within 60 days after the
entry thereof, or (iii) such case, proceeding, or action remains undismissed for
a period of 60 days or more; or

          (e)  Default in the performance of any obligation, covenant or
agreement contained or referred to herein.

          5.2  CONSEQUENCES OF DEFAULT. Upon the occurrence of any Event of
Default, the entire principal amount hereof, and all accrued and unpaid interest
thereon, shall be accelerated, and shall be due and payable, at the option of
Lender, on the fifth day after Lender provides notice of such Event of Default,
provided that such Event of Default is not cured to Lender's satisfaction in
that five-day period, and in addition thereto, and not in substitution therefor,
Lender shall be entitled to exercise any one or more of the rights and remedies
provided by applicable law. Failure to exercise said option or to pursue such
other remedies shall not constitute a waiver of such option or such other
remedies or of the right to exercise any of the same in the event of any
subsequent Event of Default hereunder. Lender shall be entitled to collect all
reasonable costs and expenses of collection and/or suit, including, but not
limited to, reasonable attorneys' fees.

     6.   PRIORITY. All rights and priorities of the authorized holder of this
Note and the indebtedness evidenced hereby shall rank in all respects (i) junior
to Borrower's obligations under that certain Financing Agreement dated October
25, 2000 between The CIT Group/Business Credit, Inc. ("CIT") and Borrower as set
forth in that certain subordination agreement between Lender and CIT dated on or
about the date hereof, (ii) senior to all other indebtedness of the Borrower,
including, without limitation, amounts owed under those obligations known as the
10% Subordinated Notes and (iii) PARI PASSU with the promissory note issued by
Borrower to PlanetCAD Inc. on or about the date hereof (the "PLANETCAD NOTE").
Other than the PlanetCAD Note, Borrower shall not incur any indebtedness outside
the ordinary course of business after the date hereof without Lender's prior
written consent.

     7.   IF ANY OF THE PAYMENTS OF PRINCIPAL AND/OR INTEREST ON THIS NOTE HAVE
NOT BEEN PAID ON OR BEFORE THE DATE ON WHICH THE SAME ARE DUE AND PAYABLE
(EXCEPT WITH RESPECT TO THE PERMISSIBLE SUSPENSION OF INTEREST PAYMENTS
DESCRIBED HEREIN), WHETHER AS ORIGINALLY

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SCHEDULED, BY ACCELERATION, OR OTHERWISE, AND SUCH FAILURE TO PAY SHALL CONTINUE
FOR TEN (10) DAYS AFTER WRITTEN NOTICE THEREOF, OR ANY OTHER DEFAULT OCCURS
HEREUNDER, THE BORROWER DOES HEREBY AUTHORIZE AND EMPOWER THE CLERK OR ANY
ATTORNEY OF ANY COURT OF RECORD HAVING JURISDICTION (INCLUDING FEDERAL COURT, IF
APPROPRIATE JURISDICTION EXISTS) TO APPEAR FOR THE BORROWER BEFORE ANY SUCH
COURT AND CONFESS JUDGMENT IN FAVOR OF THE LENDER AGAINST THE BORROWER FOR THE
UNPAID PRINCIPAL BALANCE OF THIS NOTE, TOGETHER WITH ALL ACCRUED AND UNPAID
INTEREST THEREON INCLUDING LATE CHARGES, AND TOGETHER WITH ALL COSTS OF SUIT AND
ACTUAL ATTORNEYS' FEES INCURRED AT STANDARD HOURLY RATES.

     8.   WAIVER; AMENDMENT. No delay or omission on the part of the Lender in
the exercise of any right or remedy hereunder shall operate as a waiver thereof,
nor shall any single or partial exercise of any right or remedy preclude any
other or further exercise thereof or the exercise of any other right or remedy.
The Borrower hereby waives demand, presentment and protest and notices thereof
as well as notice of non-payment. The provisions of this Note may be amended
with the written consent of Borrower and Lender. The obligations of Borrower and
the rights of Lender under this agreement may be waived by written notice
delivered to Borrower.

     9.   EXPENSES. The Borrower agrees to pay on demand all costs and expenses,
including, without limitation, reasonable attorney's fees, incurred by the
Lender in connection with this Note. In addition, the Borrower agrees to pay on
demand all costs and expenses, including, without limitation, reasonable
attorney's fees, incurred by the Lender in endeavoring to enforce the rights of
the Lender hereunder.

     10.  GOVERNING LAW. This Note shall be governed by, and construed and
enforced in accordance with, the laws of the State of Maryland, excluding
conflict of laws principles that would cause the application of laws of any
other jurisdiction.

     11.  ASSIGNMENT. This Note shall inure to the benefit of and be enforceable
by Lender's successors and authorized assigns, and shall be binding and
enforceable against Borrower's successors and assigns.

     IN WITNESS WHEREOF, Borrower has executed this Note as of the date first
written above.

     WITNESS/ATTEST:                    BORROWER:
                                        Avatech Solutions, Inc.

     /s/ Gary Rever                     By: /s/ Henry D. Felton
     --------------------------            -----------------------------

                                       3<Page>
                                                                  Exhibit 10.21

                             SUBORDINATION AGREEMENT

     THIS SUBORDINATION AGREEMENT (this "Agreement"), dated as of August 13th,
2002, is by and among W. JAMES HINDMAN (the "Subordinated Creditor"), AVATECH
SOLUTIONS, INC., ("Parent") and TECHNICAL LEARNINGWARE COMPANY, INC.
(collectively the "Companies" or individually a "Company") and THE CIT
GROUP/BUSINESS CREDIT, INC. (the "Lender").

                                    RECITALS:

     A.   The Lender has agreed to make loans to the Companies pursuant to the
terms of and as evidenced by that certain Financing Agreement, dated as October
25, 2000, as amended (if amended), by and between the Companies and the Lender
(hereinafter such Financing Agreement as amended, extended, renewed, modified
and/or replaced from time to time shall be referred to as the "Senior Financing
Agreement").

     B.   Because of the direct benefit to the Subordinated Creditor on account
of the loans made pursuant to the Senior Financing Agreement, the Subordinated
Creditor has agreed to enter into this Subordination Agreement.

     NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties hereto agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

     1.01 CERTAIN DEFINED TERMS.

     For the purposes hereof:

          (a)  "Lender" has the meaning set forth in the preamble hereof, and
any other person that is the holder of Senior Obligations at such time,
including, without limitation, any person holding Senior Obligations by
assignment or pledge.

          (b)  "Senior Obligations" means (i) the principal amount of, and
accrued interest (including, without limitation, any interest which accrues
after or would accrue but for the commencement of any case, proceeding or other
action relating to the bankruptcy, insolvency or reorganization of any Company)
payable on, the Senior Financing Agreement, (ii) all liabilities and
obligations, whenever arising, owing from any Company to the Lender, or any
affiliate of the Lender, arising under any interest rate protection agreement
(including hedges, swaps, collars and caps) now or hereafter extended by the
Lender or any of its affiliates to or for the benefit of any Company (the
"Interest Rate Protection Agreements") and (iii) all other indebtedness,
obligations and liabilities of the Companies to the Lender now existing or
hereafter
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incurred or created, under or with respect to the Senior Financing Agreement or
the Interest Rate Protection Agreements.

          (c)  "Subordinated Creditor" has the meaning set forth in the preamble
hereof.

          (d)  "Subordinated Debt Instrument" means the promissory note in the
amount of $500,000 issued by Parent in favor of the Subordinated Creditor, as
such promissory note is modified, amended or replaced from time to time.

          (e)  "Subordinated Obligations" means any and all obligations of the
Subordinated Creditor under the Subordinated Debt Instrument.

     1.02 OTHER DEFINITIONAL PROVISIONS.

     The words "hereof," "herein" and "hereunder" and words of similar import
when used in this Agreement shall refer to this Agreement as a whole and not to
any particular provision of this Agreement, and section, subsection, schedule
and exhibit references are to this Agreement unless otherwise specified.

                                   ARTICLE II

                             TERMS OF SUBORDINATION

     2.01 SUBORDINATION.

          (a)  The Subordinated Creditor agrees, for itself and each future
holder of the Subordinated Obligations, that the Subordinated Obligations are
expressly subordinated and junior in right and time of payment (as defined in
subsection 2.01(b)) to all Senior Obligations.

          (b)  "Subordinated and junior in right and time of payment" shall mean
that:

                    (i) Unless and until the Senior Obligations shall have been
               paid in full and satisfied, the Subordinated Creditor will not,
               without the express prior written consent of the Lender, take,
               demand or receive, and no Company will make, give or permit,
               directly or indirectly, by set-off, redemption, purchase or in
               any other manner, any payment or prepayment on or security or
               guaranty for the whole or any part of Subordinated Obligations,
               and without the express prior written consent of the Lender, the
               Subordinated Creditor will not accelerate the payment of the
               Subordinated Obligations or accept any payments on account of any
               excess cash flow provisions set forth in the Subordinated Debt
               Instrument, or declare to be immediately due and payable, enforce
               or take any action to enforce or collect the Subordinated
               Obligations or any portion thereof or any security of guaranty
               therefor; PROVIDED, HOWEVER, the Subordinated Creditor shall be
               entitled to receive regularly scheduled

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               current interest payments under the Subordinated Debt Instrument
               pursuant to, and in accordance with, the terms thereof so long as
               the Lender gives its written consent to the making of such
               payments.

                    (ii) Until the Senior Obligations shall have been paid in
               full in cash and satisfied, the Subordinated Creditor shall not
               accelerate, declare to be immediately due and payable, enforce or
               take any action to enforce or collect, the Subordinated
               Obligations or any portion thereof or any security or guaranty
               therefor without the express prior written consent of the Lender
               except with respect to payments permitted by Section 2.01(b)(i)
               above.

                    (iii) Except for payments permitted by Section 2.01(b)(i)
               above or Section 2.01(b)(iv) below, without the express written
               consent of the Lender, no payment, prepayment or distribution or
               any kind of character, whether in cash, property or securities
               (including without limitation, proceeds of collateral for the
               Subordinated Obligations), which, but for the subordination
               provisions contained herein, would otherwise be payable or
               deliverable to the Subordinated Creditor upon or in respect of
               the Subordinated Obligations shall be paid to the Subordinated
               Creditor, and, the Subordinated Creditor shall not receive or
               accept any such payment or distribution or any benefit therefrom
               unless and until the Senior Obligations shall have been fully
               paid and satisfied in cash.

                    (iv) Without limiting the generality of the foregoing
               provisions of this Section 2.01, in the event of any liquidation,
               termination, revocation or other winding-up of any Company, or in
               the event of any receivership, insolvency, reorganization or
               bankruptcy proceedings, assignment for the benefit of creditors
               or any proceeding by or against any Company for any relief under
               any bankruptcy, reorganization or insolvency law or laws, federal
               or state, or any law, federal or state, relating to the relief of
               debtors, readjustment of indebtedness, reorganization,
               composition or extension of indebtedness, then, and in any such
               event, all Senior Obligations shall first be paid in full in
               cash, before any payment or distribution is made in respect of
               the Subordinated Obligations, and any payment or distribution of
               any kind or character, whether in cash, property or securities
               which, but for the subordination provisions contained herein,
               would otherwise be payable or deliverable to the Subordinated
               Creditor upon or in respect of the Subordinated Obligations,
               shall instead be paid over or delivered to the Lender if the
               Senior Obligations have not been fully paid and satisfied in
               cash, and the Subordinated Creditor shall not receive any such
               payment or distribution or any benefit therefrom unless and until
               the Senior Obligations shall have been fully paid and satisfied
               in cash; PROVIDED, HOWEVER, that the Subordinated Creditor may
               receive payments permitted by Section 2.01(b)(i) above, and may
               retain securities that are subordinated to at least

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               the same extent as the Subordinated Obligations to (A) the Senior
               Obligations and (B) any securities issued in exchange for the
               Senior Obligations.

     2.02 PAYMENTS RECEIVED BY SUBORDINATED CREDITOR.

     Should any payment or distribution or security, or the proceeds of any
thereof, be collected or received by the Subordinated Creditor in respect of the
Subordinated Obligations, and such collection or receipt is not expressly
permitted hereunder (it being understood that the Subordinated Creditor is
expressly permitted hereunder to collect and receive payments and distributions
made in respect of the Subordinated Obligations in accordance with the
provisions of Section 2.01(b)(i)), the Subordinated Creditor will forthwith turn
over the same to the Lender in the form received (except for endorsement or
assignment by the Subordinated Creditor when necessary) and, until so turned
over, the same shall be held in trust by the Subordinated Creditor as the
property of the Lender.

     2.03 SUBROGATION.

     After, but only after, the Lender shall have received, in satisfaction of
the Senior Obligations, indefeasible payment in full in cash of the Senior
Obligations, the Subordinated Creditor shall be subrogated to the rights of the
Lender to receive payments on or distributions of assets with respect to the
Senior Obligations.

     2.04 NO COLLATERAL, SECURITY, GUARANTIES OR OFFSETS.

     Until the Lender shall have received, in satisfaction of the Senior
Obligations, payment in full in cash of the Senior Obligations, the Subordinated
Creditor shall not, directly or indirectly, (i) take any additional collateral
or security to secure the repayment of the Subordinated Obligations, (ii) accept
any guaranties to guarantee the repayment of the Subordinated Obligations, or
(iii) offset any present and/or future amounts owing by the Subordinated
Creditor to any Company against any present and/or future amounts owing by any
Company to the Subordinated Creditor (including, without limitation, the
Subordinated Obligations).

                                   ARTICLE III

                         REPRESENTATIONS AND WARRANTIES

     3.01 The Subordinated Creditor represents and warrants to the Lender that:

          (a)  POWER AND AUTHORITY; AUTHORIZATION; NO VIOLATION. The
Subordinated Creditor has full power, authority and legal right to execute,
deliver and perform this Agreement and, to the best of its knowledge, the
execution of this Agreement does not require any approval or consent of any
holders of any indebtedness or obligations of the Subordinated Creditor and will
not violate any provision of law, governmental regulation, order

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or decree or any provision of any indenture, mortgage, contract or other
agreement to which the Subordinated Creditor is party or by which it or its
assets are bound.

          (b)  CONSENTS. To the best of its knowledge, no consent, license,
approval or authorization of, or registration or declaration with, any
governmental instrumentality, domestic or foreign, is required in connection
with the execution, delivery and performance by the Subordinated Creditor of
this Agreement.

          (c)  BINDING OBLIGATION. This Agreement constitutes the legal, valid
and binding obligation of the Subordinated Creditor enforceable in accordance
with its terms, except as enforceability may be limited by applicable
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the
enforcement of creditors' rights generally and by general equitable principles
(whether enforcement is sought by proceedings in equity or at law).

                                   ARTICLE IV

                             MODIFICATION OF SENIOR
                              OBLIGATION; RELIANCE

     4.01 The Subordinated Creditor consents, without the necessity of any
reservation of rights against it, and without notice to or further assent by it,
to the following: (a) any demand for payment of any Senior Obligation may be
continued, and the Senior Obligations or the liability of the Companies or any
other party upon or for any part thereof, or any collateral security or guaranty
therefor, or right of offset with respect thereto, may, from time to time, in
whole or in part, be renewed, extended, modified, accelerated, compromised,
waived, surrendered, or released and (b) the Senior Financing Agreement, the
Interest Rate Protection Agreements, or any document or instrument evidencing or
governing the terms of any other Senior Obligations or any collateral security
documents or guaranties or documents in connection with the Senior Financing
Agreement, the Interest Rate Protection Agreements or the Senior Obligations may
be amended, modified, supplemented or terminated, in whole or in part, as the
Lender and the Companies may agree from time to time, and any collateral
security at any time held by the Lender for payment under the Senior Financing
Agreement or the Interest Rate Protection Agreements or otherwise of the Senior
Obligations may be sold, exchanged, waived, surrendered or released, in each
case all without notice to or further assent by the Subordinated Creditor, which
will remain bound under this Agreement, and all without impairing, abridging,
releasing or affecting the subordination provided for herein, notwithstanding
any such renewal, extension, modification, acceleration, compromise, amendment,
supplement, termination, sale, exchange, waiver, surrender or release. The
Subordinated Creditor waives any and all notice of the creation, modification,
renewal, extension or accrual of any of the Senior Obligations or any of the
obligations under the Senior Financing Agreement or the Interest Rate Protection
Agreements and notice of or proof of reliance by the Lender upon this Agreement,
the Senior Financing Agreement, the Interest Rate Protection Agreements and the
Senior Obligations, and any of them, shall conclusively be deemed to have been
created, contracted or incurred in reliance upon this Agreement, and all
dealings between the Subordinated Creditor and the Lender shall be deemed to
have been consummated in reliance upon this Agreement, except that the foregoing
provisions shall not constitute an agreement to waive the notice provisions of
Section 2.01(b)(i). The Subordinated Creditor acknowledges and agrees that the
Lender has relied upon the

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subordination provided for herein in making certain credit facilities available
under the Senior Financing Agreement. The Subordinated Creditor waives notice of
or proof of reliance on this Agreement and protest, demand for payment and
notice of default.

                                    ARTICLE V

                  MODIFICATION OF SUBORDINATED DEBT INSTRUMENT

     5.01 Until the Senior Obligations have been paid in full, the Subordinated
Creditor agrees that it will not, without the prior written consent of the
Lender in each instance (i) amend, modify, waive or supplement the terms of the
Subordinated Debt Instrument in a manner that increases or otherwise makes more
onerous the obligations of Parent thereunder with respect to the Subordinated
Obligations, (ii) accept any security interest, lien or mortgage on any assets
or property of any party to the Senior Financing Agreement as security for the
Subordinated Obligations (except for liens subordinate to the liens in favor of
the Lender) or (iii) accept any guaranty for purposes of guaranteeing the
repayment of the Subordinated Obligations.

                                   ARTICLE VI

                    TRANSFER OF SUBORDINATED DEBT INSTRUMENT

     6.01 Until the Senior Obligations have been paid in full, the Subordinated
Creditor agrees that it will not, without the prior written consent of the
Lender in each instance, (a) sell, assign or otherwise transfer, in whole or in
part, the Subordinated Debt Instrument or any interest in the foregoing to any
other person or entity (PROVIDED, HOWEVER, that the Subordinated Creditor may so
transfer the Subordinated Debt Instrument or any interest therein without the
prior written consent of the Lender if the transferee agrees in writing to be
bound by all of the terms of this Agreement as if it were a party to this
Agreement) or (b) create, incur or suffer to exist any security interest, lien,
charge or other encumbrance whatsoever upon the Subordinated Debt Instrument.

                                   ARTICLE VII

                                  MISCELLANEOUS

     7.01 NO WAIVER; CUMULATIVE REMEDIES.

     No failure to exercise, and no delay in exercising on the part of the
Lender, from time to time, any right, power or privilege under the Senior
Obligations, or any right, power or privilege under this Agreement shall operate
as a waiver thereof; nor shall any single or partial exercise of any right,
power or privilege under this Agreement preclude any other or further exercise
thereof or the exercise of any other right, power or privilege. The rights and
remedies provided in this Agreement and in any agreement relating to any of the
Senior Obligations and all other agreements, instruments and documents referred
to in any of the foregoing are cumulative and shall not be exclusive of any
rights or remedies provided by law.

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     7.02 FURTHER ASSURANCES.

     The Subordinated Creditor agrees to execute and deliver such further
documents and to do such other acts and things as the Lender may reasonably
request in order fully to effect the purposes of this Agreement.

     7.03 NOTICES.

     All notices, requests and demands to or upon the respective parties hereto
to be effective shall be in writing and, unless otherwise expressly provided
therein, shall be deemed to have been fully given or made when delivered by
hand, or five days after having been given by certified mail, return receipt
requested or, in the case of telegraphic notice, when delivered to the telegraph
company, or in the case of telex notice, when sent, answerback received,
addressed as set forth on the signature pages of this Agreement by the parties
hereto or to such address or other address as may be hereafter notified by the
respective parties hereto.

     7.04 GOVERNING LAW; SUCCESSORS AND ASSIGNS.

     This Agreement and the rights and obligations of the parties under this
Agreement shall be governed by, and construed and interpreted in accordance
with, the laws of the State of North Carolina applicable to contracts made and
to be performed in such state, and shall be binding upon and inure to the
benefit of the Lender, the Subordinated Creditor, the Companies and their
respective successors, transferees and assigns, except that the Subordinated
Creditor may not assign or transfer any of its obligations hereunder without the
prior written consent of the Lender.

     7.05 COUNTERPARTS.

     This Agreement may be executed by the parties hereto in any number of
separate counterparts all of which taken together shall constitute one and the
same instrument.

     7.06 WAIVERS, AMENDMENTS, ETC.

     The subordination provisions contained herein are for the benefit of the
Lender and its successors and assigns as holders from time to time of Senior
Obligations and may not be rescinded or canceled or modified in any way, nor,
unless otherwise expressly provided for herein, may any provision of this
Agreement be waived or changed without the express prior written consent thereto
of the Lender.

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     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed under seal as of the day and year first above written.

WITNESS:

/s/ [ILLEGIBLE]                         /s/ W. J. Hindman
-----------------------------           ------------------------------------
                                        W. JAMES HINDMAN

                                        Address for Notices:

                                        2322 Nicodemus Road
                                        --------------------------------
                                        Westminster, MD 21157
                                        ---------------------------------
                                        Fax No. (410) 840-8139

     The undersigned agrees to comply with the provisions of this Subordination
Agreement applicable to it and to make payment to the Subordinated Creditor only
in strict accordance with the terms hereof.

                                        AVATECH SOLUTIONS, INC.

/s/ Kelli A. Smith                      By: /s/ Henry D. Felton
---------------------                       ----------------------------------
    Witness                             Name: Henry D. Felton
                                        Title: CEO

                                        TECHNICAL LEARNINGWARE COMPANY, INC.

                                        By: /s/ Henry D. Felton
                                            ----------------------------------
                                        Name: Henry D. Felton
                                        Title: President

                                       8

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