CONVERGENCEHEALTH.COM

                           SERIES A-3 PREFERRED STOCK
                            STOCK PURCHASE AGREEMENT

        THIS STOCK PURCHASE AGREEMENT is made as of January 18, 2002, by and
between ConvergenceHealth.com, a Nevada corporation ("Company"), and Base Ten
Systems, Inc., a New Jersey corporation ("Investor").

        The parties hereby agree as follows:

Section 1.   PURCHASE AND SALE OF STOCK.

1.1 Sale and Issuance of Series A-3 Preferred Stock.

         A. The Company has filed with the Secretary of State of Nevada the
Certificate of Designation attached hereto as Exhibit A ("Certificate of
Designation") and, as of the Closing (as defined below), has authorized the sale
and issuance to the Investor of shares of its Series A-3 Preferred Stock, having
the rights, preferences, privileges and restrictions set forth in the
Certificate of Designation.

         B. Subject to the terms and conditions of this Agreement, the Investor
agrees to purchase at the Closing, and the Company agrees to sell and issue to
the Investor at the Closing, 800,000 shares of the Company's Series A-3
Preferred Stock ("BT Purchase Shares") in exchange for $ 200,000 ("Purchase
Price").

1.2 Closing. The purchase and sale of the BT Purchase Shares shall take place at
the offices of the Company in Incline Village, Nevada, at or around noon on the
date hereof, or at such other time and place as the Company and Investor
mutually agree upon orally or in writing (which time and place are designated as
the "Closing"). At the Closing the Company shall deliver to the Investor a
certificate or certificates representing the BT Purchase Shares against payment
of the Purchase Price therefor.

Section 2.   REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company hereby
represents and warrants to the Investor that:

2.1 Organization, Good Standing and Qualification. The Company is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Nevada and has all requisite corporate power and authority to carry on
its business as now conducted.

2.2 Authorization. All corporate action on the part of the Company, its
officers, directors and stockholders necessary for the authorization, execution
and delivery of this Agreement and the Investor's Rights Agreement, the
performance of all obligations of the Company hereunder and thereunder, and the
authorization, issuance (or reservation for issuance), sale and delivery of the
BT Purchased Shares (and the Common Stock issuable upon conversion of the BT
Purchased Shares (collectively, "Securities")) has been taken or will be taken
prior to the Closing, and this Agreement and the Investor's Rights Agreement
constitute valid and legally binding obligations of the Company, enforceable in
accordance with their respective terms, except (i) as limited by applicable
bankruptcy, insolvency, reorganization, moratorium, and other laws of general
application affecting enforcement of creditors' rights generally, and (ii) as
limited by laws relating to the availability of specific performance, injunctive
relief, or other equitable remedies.




2.3 Valid Issuance of Preferred and Common Stock. The BT Purchased Shares, when
issued, sold and delivered in accordance with the terms of this Agreement for
the consideration expressed herein (and the Common Stock issuable upon
conversion of the BT Purchased Shares), will be duly and validly issued, fully
paid, and nonassessable, and will be free of restrictions on transfer other than
restrictions on transfer under this Agreement, the Investor's Rights Agreement,
and under applicable state and federal securities laws. In the event the Company
(i) pays a dividend in Common Stock or makes a distribution in Common Stock,
(ii) subdivides the outstanding Common Stock into a greater number of shares,
(iii) combines the outstanding Common Stock into a smaller number of shares, or
(iv) increases or decreases the number of shares of Common Stock outstanding by
reclassification of the Common Stock (including a recapitalization in connection
with a consolidation or merger in which the Company is the continuing
corporation), then each BT Purchased Share shall after such dividend,
distribution, subdivision, combination, or reclassification (each, a "Corporate
Event") be convertible into the number of shares of Common Stock that would have
been deliverable upon the conversion of such BT Purchased Share if such BT
Purchase Share had been converted into Common Stock immediately prior to such
Corporate Event and such Common Stock was then subject to such Corporate Event.

2.4 Governmental Consents. No consent, approval, order or authorization of, or
registration, qualification, designation, declaration or filing with, any
federal, state or local governmental authority on the part of the Company is
required in connection with the consummation of the transactions contemplated by
this Agreement, except filings, if any, pursuant to the securities laws of the
states of residence of the Investor, or such other post-closing filings as may
be required.

Section 3.   REPRESENTATIONS AND WARRANTIES OF THE INVESTOR. The Investor hereby
represents and warrants that:

3.1 Authorization. The Investor has full power and authority to enter into this
Agreement and the Investor's Rights Agreement, and each such Agreement
constitutes its valid and legally binding obligation, enforceable in accordance
with its terms except (i) as limited by applicable bankruptcy, insolvency,
reorganization, moratorium, and other laws of general application affecting
enforcement of creditors' rights generally, and (ii) as limited by laws relating
to the availability of specific performance, injunctive relief, or other
equitable remedies.

3.2 Purchase Entirely for Own Account. This Agreement is made with the Investor
in reliance upon the Investor's representation to the Company, which by the
Investor's execution of this Agreement the Investor hereby confirms, that the
Securities will be acquired for investment for the Investor's own account, not
as a nominee or agent, and not with a view to the resale or distribution of any
part thereof, and that the Investor has no present intention of selling,
granting any participation in, or otherwise distributing the same except as
contemplated by the Merger Agreement (as defined in the Investor's Rights
Agreement). By executing this Agreement, the Investor further represents that
the Investor does not have any contract, undertaking, agreement or arrangement
with any person to sell, transfer or grant participations to such person or to
any third person, with respect to any of the Securities.

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3.3 Disclosure of Information. The Investor has received all the information it
considers necessary or appropriate for deciding whether to purchase the BT
Purchased Shares. The Investor further represents that it has had an opportunity
to ask questions and receive answers from the Company regarding the terms and
conditions of the offering of the BT Purchased Shares and the business,
properties, prospects and financial condition of the Company. The Investor
specifically represents that he understands the current precarious financial
condition of the Company and is not basing his decision to purchase the BT
Purchased Shares upon any potential acquisition or other business transaction
that the Company may complete. The foregoing, however, does not limit or modify
the representations and warranties of the Company in Section 2 of this Agreement
or the right of the Investors to rely thereon.

3.4 Investment Experience. The Investor acknowledges that it is able to fend for
itself, can bear the economic risk of its investment, and has such knowledge and
experience in financial or business matters that it is capable of evaluating the
merits and risks of the investment in the BT Purchased Shares. Investor also
represents it has not been organized for the purpose of acquiring the BT
Purchased Shares

3.5 Restricted Securities. The Investor understands that the Securities it is
purchasing are characterized as "restricted securities" under the federal
securities laws inasmuch as they are being acquired from the Company in a
transaction not involving a public offering and that under such laws and
applicable regulations such securities may be resold without registration under
the Act only in certain limited circumstances. In this connection, the Investor
represents that it is familiar with Rule 144 as promulgated by the Securities
and Exchange Commission under the Act, as presently in effect, and understands
the resale limitations imposed thereby and by the Act.

Section 4.   COVENANTS.

4.1 Further Limitations on Disposition. Except for dispositions contemplated by
Section 1.11 of that certain Agreement and Plan of Merger, dated as of the date
hereof, by and between the Company and the Investor ("Merger Agreement"), the
Investor agrees not to make any disposition of all or any portion of the
Securities unless and until the transferee has agreed in writing for the benefit
of the Company to be bound by this Section 4 and the Investor's Rights Agreement
provided and to the extent this Section and such agreement are then applicable
in accordance with their terms, and:

     A. There is then in effect a Registration Statement under the Act covering
such proposed disposition and such disposition is made in accordance with such
Registration Statement; or

     B. (i) The Investor shall have notified the Company of the proposed
disposition and shall have furnished the Company with a detailed statement of
the circumstances surrounding the proposed disposition, and (ii) if reasonably
requested by the Company, the Investor shall have furnished the Company with an
opinion of counsel, reasonably satisfactory to the Company that such disposition
will not require registration of such shares under the Act. It is agreed that
the Company will not require opinions of counsel for transactions made pursuant
to Rule 144 except in unusual circumstances.

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     C. Notwithstanding the provisions of Paragraphs A and B above, no such
registration statement or opinion of counsel shall be necessary for a transfer
by an Investor that is a partnership to a partner of such partnership or a
retired partner of such partnership who retires after the date hereof, or to the
estate of any such partner or retired partner or the transfer by gift, will or
intestate succession of any partner to his or her spouse or to the siblings,
lineal descendants or ancestors of such partner or his or her spouse, if the
transferee agrees in writing to be subject to the terms hereof to the same
extent as if he or she were an original Investor hereunder.

4.2 Legends. The Investor acknowledges and agrees that the certificates
evidencing the Securities may bear one or all of the following legends:

     A. "These securities have not been registered under the Securities Act of
1933, as amended. They may not be sold, offered for sale, pledged or
hypothecated in the absence of a registration statement in effect with respect
to the securities under such Act or an opinion of counsel satisfactory to the
Company that such registration is not required or unless sold pursuant to Rule
144 of such Act."

     B. "The shares represented by this certificate may be transferred only in
accordance with the terms of the Investor's Rights Agreement by and between the
Company and the certain of its designated holders."

     C. Any legend required by the laws of any state having jurisdiction over
this transaction.

Section 5.   MISCELLANEOUS.

5.1 Survival of Warranties. The warranties, representations and covenants of the
Company and the Investor contained in or made pursuant to this Agreement shall
survive the execution and delivery of this Agreement and the Closing and shall
in no way be affected by any investigation of the subject matter thereof made by
or on behalf of the Investors or the Company.

5.2 Successors and Assigns. Except as otherwise provided herein, the terms and
conditions of this Agreement shall inure to the benefit of and be binding upon
the respective successors and assigns of the parties (including transferees of
any Securities). Nothing in this Agreement, express or implied, is intended to
confer upon any party other than the parties hereto or their respective
successors and assigns any rights, remedies, obligations, or liabilities under
or by reason of this Agreement, except as expressly provided in this Agreement.

5.3 Governing Law. This Agreement shall be governed by and construed under the
laws of the State of Nevada as applied to agreements among Nevada residents
entered into and to be performed entirely within Nevada.

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

5.5 Titles and Subtitles. The titles and subtitles used in this Agreement are
used for convenience only and are not to be considered in construing or
interpreting this Agreement.

5.6 Notices. Any notice required or permitted under this Agreement shall be
given in writing and shall be deemed effectively given upon personal delivery to
the party to be notified or upon deposit with the United States Post Office, by
registered or certified mail, postage prepaid and addressed to the party to be
notified at the address indicated for such party on the signature page hereof,
or at such other address as such party may designate by ten (10) days' advance
written notice to the other parties.

5.7 Finder's Fee. Each party represents that it neither is nor will be obligated
for any finders' fee or commission in connection with this transaction. The
Investor agrees to indemnify and to hold harmless the Company from any liability
for any commission or compensation in the nature of a finders' fee (and the
costs and expenses of defending against such liability or asserted liability)
for which the Investor or any of its officers, partners, employees, or
representatives is responsible. The Company agrees to indemnify and hold
harmless the Investor from any liability for any commission or compensation in
the nature of a finders' fee (and the costs and expenses of defending against
such liability or asserted liability) for which the Company or any of its
officers, employees or representatives is responsible.

5.8 Amendments and Waivers. This Agreement may be amended only by a writing
signed by the Investor and the Company. No waiver shall be effective unless
express, written, and signed by the party against whom it is to be enforced.

5.9 Severability. If one or more provisions of this Agreement are held to be
unenforceable under applicable law, such provision shall be excluded from this
Agreement and the balance of the Agreement shall be interpreted as if such
provision were so excluded and shall be enforceable in accordance with its
terms; provided, however, that if the exclusion of any provision results in a
material hardship for any party, then the parties will negotiate in good faith
for up to 15 days to effect the intent of this Agreement; and if the parties are
unable to agree on replacement provisions that are enforceable, then either
party may terminate this Agreement immediately upon written notice to the other
party.

5.10 Corporate Securities Law. THE SALE OF THE SECURITIES THAT ARE THE SUBJECT
OF THIS AGREEMENT HAS NOT BEEN QUALIFIED UNDER ANY STATE LAW, AND THE ISSUANCE
OF SUCH SECURITIES OR THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION
FOR SUCH SECURITIES PRIOR TO SUCH QUALIFICATION IS UNLAWFUL UNLESS THE SALE OF
SECURITIES IS EXEMPT FROM QUALIFICATION UNDER APPLICABLE LAW. THE RIGHTS OF ALL
PARTIES TO THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON SUCH QUALIFICATION
BEING OBTAINED, UNLESS THE SALE IS SO EXEMPT.

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5.11 Entire Agreement. This Agreement, the Investor's Rights Agreement, and the
provisions of Section 1.11 of the Merger Agreement constitute the entire
agreement among the parties with respect to their subject matter, and no party
shall be liable or bound to any other party in any manner by any warranties,
representations, or covenants except as specifically set forth herein or
therein.

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

                                            CONVERGENCEHEALTH.COM



                                            By: ________________________________
                                            Name:  Byron Gehring
                                            Title: CEO and Chairman



                                            BASE TEN SYSTEMS, INC.
Number of Series A-3 Shares:
800,000

Purchase Price: $ 200,000                   ____________________________
                                            Name:  Kenneth W. Riley
                                            Title: Chief Financial Officer


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