Document:

Exhibit 10.8

                          REGISTRATION RIGHTS AGREEMENT

                  This Registration Rights Agreement (this "Agreement") is made
and entered into as of April 7, 2000, among CeleXx Corporation, a Nevada
corporation (the "Company"), and the investors signatory hereto (each such
investor is a "Purchaser" and all such investors are, collectively, the
"Purchasers").

                  This Agreement is made pursuant to the Convertible Preferred
Stock Purchase Agreement, dated as of the date hereof among the Company and the
Purchasers (the "Purchase Agreement").

                  The Company and the Purchasers hereby agree as follows:

         1.       Definitions

                  Capitalized terms used and not otherwise defined herein that
are defined in the Purchase Agreement shall have the meanings given such terms
in the Purchase Agreement. As used in this Agreement, the following terms shall
have the following meanings:

                  "Affiliate" means, with respect to any Person, any other
Person that directly or indirectly controls or is controlled by or under common
control with such Person. For the purposes of this definition, "control," when
used with respect to any Person, means the possession, direct or indirect, of
the power to direct or cause the direction of the management and policies of
such Person, whether through the ownership of voting securities, by contract or
otherwise; and the terms of "affiliated," "controlling" and "controlled" have
meanings correlative to the foregoing.

                  "Business Day" means any day except Saturday, Sunday and any
day which shall be a legal holiday or a day on which banking institutions in the
State of New York or the State of Florida generally are authorized or required
by law or other government actions to close.

                  "Certificate of Designation" shall have the meaning set forth
in the Purchase Agreement.

                  "Closing Date" shall have the meaning set forth in the
Purchase Agreement.

                  "Commission" means the Securities and Exchange Commission.

                  "Common Stock" means the Company's common stock, $.001 par
value per share, or such securities that such stock shall hereafter be
reclassified into.

                  "Effectiveness Date" means the 110th day following the Closing
Date.

                  "Effectiveness Period" shall have the meaning set forth in
Section 2(a).

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                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

                  "Filing Date" means the 45th day following the Closing Date.

                  "Holder" or "Holders" means the holder or holders, as the case
may be, from time to time of Registrable Securities.

                  "Indemnified Party" shall have the meaning set forth in
Section 5(c).

                  "Indemnifying Party" shall have the meaning set forth in
Section 5(c).

                  "Losses" shall have the meaning set forth in Section 5(a).

                  "Person"  means an individual or a corporation,
partnership,  trust,  incorporated  or unincorporated association,
joint venture, limited liability company, joint stock company, government (or an
agency or political subdivision thereof) or other entity of any kind.

                  "Preferred Stock" means the Company's Series A Convertible
Preferred Stock issued to the Purchasers in accordance with the Purchase
Agreement.

                  "Proceeding" means an action, claim, suit, investigation or
proceeding (including, without limitation, an investigation or partial
proceeding, such as a deposition), whether commenced or threatened.

                  "Prospectus" means the prospectus included in the Registration
Statement (including, without limitation, a prospectus that includes any
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon Rule 430A promulgated under the
Securities Act), as amended or supplemented by any prospectus supplement, with
respect to the terms of the offering of any portion of the Registrable
Securities covered by the Registration Statement, and all other amendments and
supplements to the Prospectus, including post-effective amendments, and all
material incorporated by reference or deemed to be incorporated by reference in
such Prospectus.

                  "Registrable Securities" means the shares of Common Stock
issuable upon conversion in full of the Preferred Stock and exercise in full of
the Warrants.

                  "Registration Statement" means the registration statement and
any additional registration statements contemplated by Section 2(a), including
(in each case) the Prospectus, amendments and supplements to such registration
statement or Prospectus, including pre- and post-effective amendments, all
exhibits thereto, and all material incorporated by reference or deemed to be
incorporated by reference in such registration statement.

                  "Rule 144" means Rule 144 promulgated by the Commission
pursuant to the Securities Act, as such Rule may be amended from time to time,
or any similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

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                  "Rule 415" means Rule 415 promulgated by the Commission
pursuant to the Securities Act, as such Rule may be amended from time to time,
or any similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

                  "Rule 424" means Rule 424 promulgated by the Commission
pursuant to the Securities Act, as such Rule may be amended from time to time,
or any similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

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

                  "Special Counsel" means one special counsel to the Holders,
for which the Holders will be reimbursed by the Company pursuant to Section 4.

                  "Warrants" shall mean (i) the Common Stock purchase warrants
issued to the Purchasers pursuant to the Purchase Agreement and (ii) the Common
Stock purchase warrant issued to Wellington Capital Corporation in connection
with the transactions contemplated by the Purchase Agreement.

         2.       Shelf Registration

                  (a)  On or prior to the Filing Date, the Company shall
prepare and file with the Commission a "Shelf" Registration Statement covering
the resale of all Registrable Securities for an offering to be made on a
continuous basis pursuant to Rule 415. The Registration Statement shall be on
Form S-1 (or on another appropriate form in accordance herewith as the Holders
may consent) and shall contain (except if otherwise directed by the Holders) the
"Plan of Distribution" attached hereto as Annex A, and cause the Registration
Statement to become effective and remain effective as provided herein. The
Company shall use its best efforts to cause the Registration Statement to be
declared effective under the Securities Act as promptly as possible after the
filing thereof, but in any event prior to the Effectiveness Date, and shall use
its best efforts to keep such Registration Statement continuously effective
under the Securities Act until the date which is two years after the date that
such Registration Statement is declared effective by the Commission or such
earlier date when all Registrable Securities covered by such Registration
Statement have been sold or may be sold without volume restrictions pursuant to
Rule 144(k) as determined by the counsel to the Company pursuant to a written
opinion letter to such effect, addressed and acceptable to the Company's
transfer agent and the affected Holders (the "Effectiveness Period"), provided,
that the Company shall not be deemed to have used its best efforts to keep the
Registration Statement effective during the Effectiveness Period if it
voluntarily takes any action that would result in the Holders not being able to
sell the Registrable Securities covered by such Registration Statement during
the Effectiveness Period, unless such action is required under applicable law or
the Company has filed a post-effective amendment to the Registration Statement
and the Commission has not declared it effective.

                  (b)  The initial Registration Statement required to be
filed hereunder shall include (but not be limited to) a number of shares of
Common Stock equal to no less than the sum of (i) 200% of the number of shares
of Common Stock issuable upon conversion in full of the outstanding principal
amount of the Preferred Stock, assuming for such purposes that such Shares are

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outstanding for five years, that all accrued dividends are added to the Stated
Value (as defined in the Certificate of Designation) and that such conversion
occurred on the Closing Date, the Filing Date or the day preceding the date the
Company files an acceleration request with the Commission relating to the
Registration Statement, whichever yields the lowest Conversion Price (as defined
in the Certificate of Designation).

                  (c)  If (a) the initial Registration Statement is not
filed on or prior to the Filing Date (if the Company files such Registration
Statement without affording the Holder the opportunity to review and comment on
the same as required by Section 3(a) hereof, the Company shall not be deemed to
have satisfied this clause (a)), or (b) the Company fails to file with the
Commission a request for acceleration in accordance with Rule 461 promulgated
under the Securities Act, within five days of the date that the Company is
notified (orally or in writing, whichever is earlier) by the Commission that a
Registration Statement will not be "reviewed," or not subject to further review,
or (c) the initial Registration Statement filed hereunder is not declared
effective by the Commission on or prior to the Effectiveness Date, or (d) after
a Registration Statement is filed with and declared effective by the Commission,
such Registration Statement ceases to be effective as to all Registrable
Securities at any time prior to the expiration of the Effectiveness Period
without being succeeded within ten Business Days by an amendment to such
Registration Statement or by a subsequent Registration Statement filed with and
declared effective by the Commission, or (e) the Common Stock shall not be
quoted on the OTC Bulletin Board ("OTC") or shall be suspended or delisted from
trading on the American Stock Exchange, the New York Stock Exchange, Nasdaq
National Market or Nasdaq Smallcap Market (each, a "Subsequent Market") for more
than ten Business Days (which need not be consecutive days), or (f) the
conversion rights of the Holders pursuant to the Certificate of Designation are
suspended for any reason, or (g) an amendment to a Registration Statement is not
filed by the Company with the Commission within ten Business Days of the
Commission's notifying the Company that such amendment is required in order for
such Registration Statement to be declared effective (any such failure or breach
being referred to as an "Event," and for purposes of clauses (a), (c), (f) the
date on which such Event occurs, or for purposes of clause (b) the date on which
such five day period is exceeded, or for purposes of clauses (d) and (g) the
date which such 10 Business Day-period is exceeded, or for purposes of clause
(e) the date on which such ten day-period is exceeded, being referred to as
"Event Date"), then, on the Event Date and each monthly anniversary thereof
until the applicable Event is cured, the Company shall pay to each Holder 2.0%
of the purchase price paid by such Holder pursuant to the Purchase Agreement, in
cash, as liquidated damages and not as a penalty. If the Company fails to pay
any liquidated damages pursuant to this Section in full within seven (7) days
after the date payable, the Company will pay interest thereon at a rate of 18%
per annum (or such lesser maximum amount that is permitted to be paid by
applicable law) to the Holder, accruing daily from the date such liquidated
damages are due until such amounts, plus all such interest thereon, are paid in
full. The liquidated damages pursuant to the terms hereof shall apply on a
pro-rata basis for any portion of a month prior to the cure of an Event.

         3.       Registration Procedures

                  In connection with the Company's registration obligations
hereunder, the Company shall:
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                  (a)  Not less than five Business Days prior to the
filing of the Registration Statement or any related Prospectus or any amendment
or supplement thereto (including any document that would be incorporated or
deemed to be incorporated therein by reference), the Company shall, (i) furnish
to the Holders and their Special Counsel copies of all such documents proposed
to be filed, which documents (other than those incorporated or deemed to be
incorporated by reference) will be subject to the review of such Holders and
their Special Counsel, and (ii) cause its officers and directors, counsel and
independent certified public accountants to respond to such inquiries as shall
be necessary, in the reasonable opinion of respective counsel to conduct a
reasonable investigation within the meaning of the Securities Act. The Company
shall not file the Registration Statement or any such Prospectus or any
amendments or supplements thereto to which the Holders of a majority of the
Registrable Securities and their Special Counsel shall reasonably object.

                  (b)  (i) Prepare and file with the Commission such
amendments, including post-effective amendments, to the Registration Statement
and the Prospectus used in connection therewith as may be necessary to keep the
Registration Statement continuously effective as to the applicable Registrable
Securities for the Effectiveness Period and prepare and file with the Commission
such additional Registration Statements in order to register for resale under
the Securities Act all of the Registrable Securities; (ii) cause the related
Prospectus to be amended or supplemented by any required Prospectus supplement,
and as so supplemented or amended to be filed pursuant to Rule 424; (iii)
respond as promptly as reasonably possible, and in any event within ten days, to
any comments received from the Commission with respect to the Registration
Statement or any amendment thereto and as promptly as reasonably possible
provide the Holders true and complete copies of all correspondence from and to
the Commission relating to the Registration Statement; and (iv) comply in all
material respects with the provisions of the Securities Act and the Exchange Act
with respect to the disposition of all Registrable Securities covered by the
Registration Statement during the applicable period in accordance with the
intended methods of disposition by the Holders thereof set forth in the
Registration Statement as so amended or in such Prospectus as so supplemented.

                  (c)  File additional Registration Statements if the
number of Registrable Securities at any time exceeds 85% of the number of shares
of Common Stock then registered in a Registration Statement. The Company shall
have twenty days to file such additional Registration Statements after notice of
such requirement is given by the Holders.

                  (d)  Notify the Holders of Registrable Securities to be
sold and their Special Counsel as promptly as reasonably possible (and, in the
case of (i)(A) below, not less than five Business Days prior to such filing) and
(if requested by any such Person) confirm such notice in writing no later than
one Business Day following the day (i)(A) when a Prospectus or any Prospectus
supplement or post-effective amendment to the Registration Statement is proposed
to be filed; (B) when the Commission notifies the Company whether there will be
a "review" of such Registration Statement and whenever the Commission comments
in writing on such Registration Statement (the Company shall provide true and
complete copies thereof and all written responses thereto to each of the
Holders); and (C) with respect to the Registration Statement or any
post-effective amendment, when the same has become effective; (ii) of any
request by the Commission or any other Federal or state governmental authority
for amendments or supplements to the Registration  Statement or Prospectus or
for additional information; (iii) of the issuance by the Commission of any stop

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order suspending the effectiveness of the Registration Statement covering any or
all of the Registrable Securities or the initiation of any Proceedings for that
purpose; (iv) if at any time any of the representations and warranties of the
Company contained in any agreement contemplated hereby ceases to be true and
correct in all material respects; (v) of the receipt by the Company of any
notification with respect to the suspension of the qualification or exemption
from qualification of any of the Registrable Securities for sale in any
jurisdiction, or the initiation or threatening of any Proceeding for such
purpose; and (vi) of the occurrence of any event or passage of time that makes
the financial statements included in the Registration Statement ineligible for
inclusion therein or any statement made in the Registration Statement or
Prospectus or any document incorporated or deemed to be incorporated therein by
reference untrue in any material respect or that requires any revisions to the
Registration Statement, Prospectus or other documents so that, in the case of
the Registration Statement or the Prospectus, as the case may be, it will not
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading.

                  (e)  Use its best efforts to avoid the issuance of, or,
if issued, obtain the withdrawal of (i) any order suspending the effectiveness
of the Registration Statement, or (ii) any suspension of the qualification (or
exemption from qualification) of any of the Registrable  Securities for sale
in any jurisdiction, at the earliest practicable moment.

                  (f)  Furnish to each Holder and their Special Counsel,
without charge, at least one conformed copy of each Registration Statement and
each amendment thereto, including financial statements and schedules, all
documents incorporated or deemed to be incorporated therein by reference, and
all exhibits to the extent requested by such Person (including those previously
furnished or incorporated by reference) promptly after the filing of such
documents with the Commission.

                  (g)  Promptly deliver to each Holder and their Special
Counsel, without charge, as many copies of the Prospectus or Prospectuses
(including each form of prospectus) and each amendment or supplement thereto as
such Persons may reasonably request. The Company hereby consents to the use of
such Prospectus and each amendment or supplement thereto by each of the selling
Holders in connection with the offering and sale of the Registrable Securities
covered by such Prospectus and any amendment or supplement thereto.

                  (h)  Prior to any public offering of Registrable
Securities, use its best efforts to register or qualify or cooperate with the
selling Holders and their Special Counsel in connection with the registration or
qualification (or exemption from such registration or qualification) of such
Registrable Securities for offer and sale under the securities or Blue Sky laws
of such jurisdictions within the United States as any Holder requests in
writing, to keep each such registration or qualification (or exemption
therefrom) effective during the Effectiveness Period and to do any and all other
acts or things necessary or advisable to enable the disposition in such
jurisdictions of the Registrable Securities covered by a Registration Statement;
provided, that the Company shall not be required to qualify generally to do
business in any jurisdiction where it is not then so qualified or subject the
Company to any material tax in any such jurisdiction where it is not then so
subject.

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                  (i)  Cooperate with the Holders to facilitate the timely
preparation and delivery of certificates representing Registrable Securities to
be delivered to a transferee pursuant to a Registration Statement, which
certificates shall be free, to the extent permitted by the Purchase Agreement,
of all restrictive legends, and to enable such Registrable Securities to be in
such denominations and registered in such names as any such Holders may request.

                  (j)  Upon the occurrence of any event contemplated by
Section 3(d)(vi), as promptly as reasonably possible, prepare a supplement or
amendment, including a post-effective amendment, to the Registration Statement
or a supplement to the related Prospectus or any document incorporated or deemed
to be incorporated therein by reference, and file any other required document so
that, as thereafter delivered, neither the Registration Statement nor such
Prospectus will contain an untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading.

                  (k)    Comply with all applicable rules and regulations of the
Commission.

                  (l)  The Company may require each selling Holder to
furnish to the Company a certified statement as to the number of shares of
Common Stock beneficially owned by such Holder and, if requested by the
Commission, the controlling person thereof.

                  4.  Registration Expenses. All fees and expenses
incident to the performance of or compliance with this Agreement by the Company
shall be borne by the Company whether or not any Registrable Securities are sold
pursuant to the Registration Statement. The fees and expenses referred to in the
foregoing sentence shall include, without limitation, (i) all registration and
filing fees (including, without limitation, fees and expenses (A) with respect
to filings required to be made with any Subsequent Market on which the Common
Stock is then listed for trading, and (B) in compliance with applicable state
securities or Blue Sky laws (including, without limitation, fees and
disbursements of counsel for the Holders in connection with Blue Sky
qualifications or exemptions of the Registrable Securities and determination of
the eligibility of the Registrable Securities for investment under the laws of
such jurisdictions as the Holders of a majority of Registrable Securities may
designate)), (ii) printing expenses (including, without limitation, expenses of
printing certificates for Registrable Securities and of printing prospectuses if
the printing of prospectuses is requested by the holders of a majority of the
Registrable Securities included in the Registration Statement), (iii) messenger,
telephone and delivery expenses, (iv) fees and disbursements of counsel for the
Company and Special Counsel for the Holders, (v) Securities Act liability
insurance, if the Company so desires such insurance, and (vi) fees and expenses
of all other Persons retained by the Company in connection with the consummation
of the transactions contemplated by this Agreement. In addition, the Company
shall be responsible for all of its internal expenses incurred in connection
with the consummation of the transactions contemplated by this Agreement
(including, without limitation, all salaries and expenses of its officers and
employees performing legal or accounting duties), the expense of any annual
audit and the fees and expenses incurred in connection with the listing of the
Registrable Securities on any securities exchange as required hereunder.

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         5.       Indemnification

                  (a)  Indemnification by the Company. The Company shall,
notwithstanding any termination of this Agreement, indemnify and hold harmless
each Holder, the officers, directors, agents, brokers (including brokers who
offer and sell Registrable Securities as principal as a result of a pledge or
any failure to perform under a margin call of Common Stock), investment advisors
and employees of each of them, each Person who controls any such Holder (within
the meaning of Section 15 of the Securities Act or Section 20 of the Exchange
Act) and the officers, directors, agents and employees of each such controlling
Person, to the fullest extent permitted by applicable law, from and against any
and all losses, claims, damages, liabilities, costs (including, without
limitation, costs of preparation and attorneys' fees) and expenses
(collectively, "Losses"), as incurred, arising out of or relating to any untrue
or alleged untrue statement of a material fact contained in the Registration
Statement, any Prospectus or any form of prospectus or in any amendment or
supplement thereto or in any preliminary prospectus, or arising out of or
relating to any omission or alleged omission of a material fact required to be
stated therein or necessary to make the statements therein (in the case of any
Prospectus or form of prospectus or supplement thereto, in light of the
circumstances under which they were made) not misleading, except to the extent,
but only to the extent, that (1) such untrue statements or omissions are based
solely upon information regarding such Holder furnished in writing to the
Company by such Holder expressly for use therein, or to the extent that such
information relates to such Holder or such Holder's proposed method of
distribution of Registrable Securities and was reviewed and expressly approved
in writing by such Holder expressly for use in the Registration Statement, such
Prospectus or such form of Prospectus or in any amendment or supplement thereto
or (2) in the case of an occurrence of an event of the type specified in Section
3(d)(ii)-(vi), the use by such Holder of an outdated or defective Prospectus
after the Company has notified such Holder in writing that the Prospectus is
outdated or defective and prior to the receipt by such Holder of the Advice
contemplated in Section 6(e). The Company shall notify the Holders promptly of
the institution, threat or assertion of any Proceeding of which the Company is
aware in connection with the transactions contemplated by this Agreement.

                  (b)  Indemnification by Holders. Each Holder shall,
severally and not jointly, indemnify and hold harmless the Company, its
directors, officers, agents and employees, each Person who controls the Company
(within the meaning of Section 15 of the Securities Act and Section 20 of the
Exchange Act), and the directors, officers, agents or employees of such
controlling Persons, to the fullest extent permitted by applicable law, from and
against all Losses (as determined by a court of competent jurisdiction in a
final judgment not subject to appeal or review) arising solely out of or based
solely upon any untrue statement of a material fact contained in the
Registration Statement, any Prospectus, or any form of prospectus, or in any
amendment or supplement thereto, or arising solely out of or based solely upon
any omission of a material fact required to be stated therein or necessary to
make the statements therein not misleading to the extent, but only to the
extent, that such untrue statement or omission is contained in any information
so furnished in writing by such Holder to the Company specifically for inclusion
in the Registration Statement or such Prospectus or to the extent that such
information relates to such Holder or such Holder's proposed method of
distribution of Registrable Securities and was reviewed and expressly approved
in writing by such Holder expressly for use in the Registration Statement, such
Prospectus or such form of Prospectus, or in any amendment or supplement
thereto. In no event shall the liability of any selling Holder hereunder be
greater in amount than the dollar amount of the net proceeds received by such

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<PAGE>

Holder upon the sale of the Registrable Securities giving rise to such
indemnification obligation.

                  (c)  Conduct of Indemnification Proceedings. If any
Proceeding shall be brought or asserted against any Person entitled to indemnity
hereunder (an "Indemnified Party"), such Indemnified Party shall promptly notify
the Person from whom indemnity is sought (the "Indemnifying Party") in writing,
and the Indemnifying Party shall assume the defense thereof, including the
employment of counsel reasonably satisfactory to the Indemnified Party and the
payment of all fees and expenses incurred in connection with defense thereof;
provided, that the failure of any Indemnified Party to give such notice shall
not relieve the Indemnifying Party of its obligations or liabilities pursuant to
this Agreement, except (and only) to the extent that it shall be finally
determined by a court of competent jurisdiction (which determination is not
subject to appeal or further review) that such failure shall have proximately
and materially adversely prejudiced the Indemnifying Party.

                  An Indemnified Party shall have the right to employ separate
counsel in any such Proceeding and to participate in the defense thereof, but
the fees and expenses of such counsel shall be at the expense of such
Indemnified Party or Parties unless: (1) the Indemnifying Party has agreed in
writing to pay such fees and expenses; or (2) the Indemnifying Party shall have
failed promptly to assume the defense of such Proceeding and to employ counsel
reasonably satisfactory to such Indemnified Party in any such Proceeding; or (3)
the named parties to any such Proceeding (including any impleaded parties)
include both such Indemnified Party and the Indemnifying Party, and such
Indemnified Party shall have been advised by counsel that a conflict of interest
is likely to exist if the same counsel were to represent such Indemnified Party
and the Indemnifying Party (in which case, if such Indemnified Party notifies
the Indemnifying Party in writing that it elects to employ separate counsel at
the expense of the Indemnifying Party, the Indemnifying Party shall not have the
right to assume the defense thereof and such counsel shall be at the expense of
the Indemnifying Party). The Indemnifying Party shall not be liable for any
settlement of any such Proceeding effected without its written consent, which
consent shall not be unreasonably withheld. No Indemnifying Party shall, without
the prior written consent of the Indemnified Party, effect any settlement of any
pending Proceeding in respect of which any Indemnified Party is a party, unless
such settlement includes an unconditional release of such Indemnified Party from
all liability on claims that are the subject matter of such Proceeding.

                  All fees and expenses of the Indemnified Party (including
reasonable fees and expenses to the extent incurred in connection with
investigating or preparing to defend such Proceeding in a manner not
inconsistent with this Section) shall be paid to the Indemnified Party, as
incurred, within ten Business Days of written notice thereof to the Indemnifying
Party (regardless of whether it is ultimately determined that an Indemnified
Party is not entitled to indemnification hereunder; provided, that the
Indemnifying Party may require such Indemnified Party to undertake to reimburse
all such fees and expenses to the extent it is finally judicially determined
that such Indemnified Party is not entitled to indemnification hereunder).

                  (d)  Contribution.  If a claim for
indemnification  under Section 5(a) or 5(b) is unavailable to an Indemnified
Party (by reason of public policy or otherwise), then each Indemnifying Party,
in lieu of indemnifying such Indemnified Party, shall contribute to the amount
paid or payable by such Indemnified Party as a result of such Losses, in such
proportion as is appropriate to reflect the relative fault of the Indemnifying

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<PAGE>

Party and Indemnified Party in connection with the actions, statements or
omissions that resulted in such Losses as well as any other relevant equitable
considerations. The relative fault of such Indemnifying Party and Indemnified
Party shall be determined by reference to, among other things, whether any
action in question, including any untrue or alleged untrue statement of a
material fact or omission or alleged omission of a material fact, has been taken
or made by, or relates to information supplied by, such Indemnifying Party or
Indemnified Party, and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such action, statement or
omission. The amount paid or payable by a party as a result of any Losses shall
be deemed to include, subject to the limitations set forth in Section 5(c), any
reasonable attorneys' or other reasonable fees or expenses incurred by such
party in connection with any Proceeding to the extent such party would have been
indemnified for such fees or expenses if the indemnification provided for in
this Section was available to such party in accordance with its terms.

                  The parties hereto agree that it would not be just and
equitable if contribution pursuant to this Section 5(d) were determined by pro
rata allocation or by any other method of allocation that does not take into
account the equitable considerations referred to in the immediately preceding
paragraph. Notwithstanding the provisions of this Section 5(d), no Holder shall
be required to contribute, in the aggregate, any amount in excess of the amount
by which the proceeds actually received by such Holder from the sale of the
Registrable Securities subject to the Proceeding exceeds the amount of any
damages that such Holder has otherwise been required to pay by reason of such
untrue or alleged untrue statement or omission or alleged omission. No Person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of
the Securities Act) shall be entitled to contribution from any Person who was
not guilty of such fraudulent misrepresentation.

                  The indemnity and contribution agreements contained in this
Section are in addition to any liability that the Indemnifying Parties may have
to the Indemnified Parties.

         6.       Miscellaneous

                  (a)  Remedies. In the event of a breach by the Company
or by a Holder, of any of their obligations under this Agreement, each Holder or
the Company, as the case may be, in addition to being entitled to exercise all
rights granted by law and under this Agreement, including recovery of damages,
will be entitled to specific performance of its rights under this Agreement. The
Company and each Holder agree that monetary damages would not provide adequate
compensation for any losses incurred by reason of a breach by it of any of the
provisions of this Agreement and hereby further agrees that, in the event of any
action for specific performance in respect of such breach, it shall waive the
defense that a remedy at law would be adequate.

                  (b)  No Inconsistent Agreements. Neither the Company nor
any of its subsidiaries has entered, as of the date hereof, nor shall the
Company or any of its subsidiaries, on or after the date of this Agreement,
enter into any agreement with respect to its securities that is inconsistent
with the rights granted to the Holders in this Agreement or otherwise conflicts
with the provisions hereof. Except as and to the extent specified in Schedule
6(b) hereto, neither the Company nor any of its subsidiaries has previously
entered into any agreement granting any registration rights with respect to any
of its securities to any Person.

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<PAGE>

                  (c)  No Piggyback on Registrations. Except as and to the
extent specified in Schedule 6(b) hereto, neither the Company nor any of its
security holders (other than the Holders in such capacity pursuant hereto) may
include securities of the Company in the Registration Statement other than the
Registrable Securities, and the Company shall not after the date hereof enter
into any agreement providing any such right to any of its security holders.

                  (d)  Compliance. Each Holder covenants and agrees that
it will comply with the prospectus delivery requirements of the Securities Act
as applicable to it in connection with sales of Registrable Securities pursuant
to the Registration Statement.

                  (e)  Discontinued Disposition. Each Holder agrees by its
acquisition of such Registrable Securities that, upon receipt of a notice from
the Company of the occurrence of any event of the kind described in Sections
3(d)(ii), 3(d)(iii),  3(d)(iv), 3(d)(v) or 3(d)(vi), such Holder will
forthwith discontinue disposition of such Registrable Securities under the
Registration Statement until such Holder's receipt of the copies of the
supplemented Prospectus and/or amended Registration Statement contemplated by
Section 3(j), or until it is advised in writing (the "Advice") by the Company
that the use of the applicable Prospectus may be resumed, and, in either case,
has received copies of any additional or supplemental filings that are
incorporated or deemed to be incorporated by reference in such Prospectus or
Registration Statement. The Company may provide appropriate stop orders to
enforce the provisions of this paragraph.

                  (f)  Piggy-Back Registrations. If at any time during the
Effectiveness Period there is not an effective Registration Statement covering
all of the Registrable Securities and the Company shall determine to prepare and
file with the Commission a registration statement relating to an offering for
its own account or the account of others under the Securities Act of any of its
equity securities, other than on Form S-4 or Form S-8 (each as promulgated under
the Securities Act) or their then equivalents relating to equity securities to
be issued solely in connection with any acquisition of any entity or business or
equity securities issuable in connection with stock option or other employee
benefit plans, then the Company shall send to each Holder written notice of such
determination and, if within fifteen days after receipt of such notice, any such
Holder shall so request in writing, the Company shall include in such
registration statement all or any part of such Registrable Securities such
holder requests to be registered.

                  (h)  Amendments and Waivers. The provisions of this
Agreement, including the provisions of this sentence, may not be amended,
modified or supplemented, and waivers or consents to departures from the
provisions hereof may not be given, unless the same shall be in writing and
signed by the Company and the Holders of at least two-thirds of the then
outstanding Registrable Securities. Notwithstanding the foregoing, a waiver or
consent to depart from the provisions hereof with respect to a matter that
relates exclusively to the rights of Holders and that does not directly or
indirectly affect the rights of other Holders may be given by Holders of at
least a majority of the Registrable Securities to which such waiver or consent
relates; provided, however, that the provisions of this sentence may not be
amended, modified, or supplemented except in accordance with the provisions of
the immediately preceding sentence.

                                      -11-

<PAGE>

                  (i)  Notices. Any and all notices or other
communications or deliveries required or permitted to be provided hereunder
shall be in writing and shall be deemed given and effective on the earliest of
(i) the date of transmission, if such notice or communication is delivered via
facsimile at the facsimile telephone number specified in this Section prior to
6:30 p.m. (New York City time) on a Business Day, (ii) the Business Day after
the date of transmission, if such notice or communication is delivered via
facsimile at the facsimile telephone number specified in the Purchase Agreement
later than 6:30 p.m. (New York City time) on any date and earlier than 11:59
p.m. (New York City time) on such date, (iii) the Business Day following the
date of mailing, if sent by nationally recognized overnight courier service, or
(iv) upon actual receipt by the party to whom such notice is required to be
given. The address for such notices and communications shall be as follows:

         If to Company:             CeleXx Corporation
                                    7251 West Palmetto Park Road, Suite 208,
                                    Boca Raton, Florida 33433
                                    Facsimile No.: (561) 395-1975
                                    Attn:  Chief Financial Officer

         With copies to:            Atlas Perlman, P.A.
                                    350 Las Olas Boulevard, Suite 1700
                                    Fort Lauderdale, Florida 33301
                                    Facsimile No.: (954) 766-7800
                                    Attn: James M. Schneider, Esq.

         If to a Purchaser:
                                    To the address set forth under such
                                    Purchaser's  name  on  the  signature pages
                                    hereto.

         If to any other Person who is then the registered Holder:

                                    To the address of such Holder as it appears
                                    in the stock  transfer books of the Company

or such other address as may be designated in writing hereafter, in the same
manner, by such Person.

                  (j)  Successors and Assigns. This Agreement shall inure
to the benefit of and be binding upon the successors and permitted assigns of
each of the parties and shall inure to the benefit of each Holder. The Company
may not assign its rights or obligations hereunder without the prior written
consent of each Holder. Each Holder may assign their respective rights hereunder
in the manner and to the Persons as permitted under the Purchase Agreement.

                  (k)  Counterparts. This Agreement may be executed in any
number of counterparts, each of which when so executed shall be deemed to be an
original and, all of which taken together shall constitute one and the same
Agreement. In the event that any signature is delivered by facsimile
transmission, such signature shall create a valid binding obligation of the

                                      -12-
<PAGE>

party executing (or on whose behalf such signature is executed) the same with
the same force and effect as if such facsimile signature were the original
thereof.

                  (l)  Governing Law. All questions concerning the
construction, validity, enforcement and interpretation of this Agreement shall
be governed by and construed and enforced in accordance with the internal laws
of the State of New York, without regard to the principles of conflicts of law
thereof. Each party hereby irrevocably submits to the exclusive jurisdiction of
the state and federal courts sitting in the City of New York, borough of
Manhattan, for the adjudication of any dispute hereunder or in connection
herewith or with any transaction contemplated hereby or discussed herein, and
hereby irrevocably waives, and agrees not to assert in any suit, action or
proceeding, any claim that it is not personally subject to the jurisdiction of
any such court, that such suit, action or proceeding is improper. Each party
hereby irrevocably waives personal service of process and consents to process
being served in any such suit, action or proceeding by mailing a copy thereof to
such party at the address in effect for notices to it under this Agreement and
agrees that such service shall constitute good and sufficient service of process
and notice thereof. Nothing contained herein shall be deemed to limit in any way
any right to serve process in any manner permitted by law.

                  (m)   Cumulative  Remedies.  The remedies  provided herein are
cumulative and not exclusive of any remedies provided by law.

                  (n)  Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, illegal, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their reasonable efforts to find and employ an alternative
means to achieve the same or substantially the same result as that contemplated
by such term, provision, covenant or restriction. It is hereby stipulated and
declared to be the intention of the parties that they would have executed the
remaining terms, provisions, covenants and restrictions without including any of
such that may be hereafter declared invalid, illegal, void or unenforceable.

                  (o)    Headings.   The  headings  in  this  Agreement  are for
convenience  of  reference  only  and  shall  not  limit or otherwise affect the
meaning hereof.

                  (p)  Shares Held by the Company and its Affiliates.
Whenever the consent or approval of Holders of a specified percentage of
Registrable Securities is required hereunder, Registrable Securities held by the
Company or its Affiliates (other than any Holder or transferees or successors or
assigns thereof if such Holder is deemed to be an Affiliate solely by reason of
its holdings of such Registrable Securities) shall not be counted in determining
whether such consent or approval was given by the Holders of such required
percentage.

                  (q)  Independent Nature of Purchasers' Obligations and
Rights. The obligations of each Purchaser hereunder is several and not joint
with the obligations of any other Purchaser hereunder, and neither Purchaser
shall be responsible in any way for the performance of the obligations of any
other Purchaser hereunder. Nothing contained herein or in any other agreement or
document delivered at any closing, and no action taken by any Purchaser pursuant

                                      -13-

<PAGE>

hereto or thereto, shall be deemed to constitute the Purchasers as a
partnership, an association, a joint venture or any other kind of entity, or
create a presumption that the Purchasers are in any way acting in concert with
respect to such obligations or the transactions contemplated by this Agreement.
Each Purchaser shall be entitled to protect and enforce its rights, including
without limitation the rights arising out of this Agreement, and it shall not be
necessary for any other Purchaser to be joined as an additional party in any
proceeding for such purpose.

                   [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
                           SIGNATURE PAGES TO FOLLOW]

                                      -14-
<PAGE>

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

                                    CELEXX CORPORATION

                                    By:/s/ Douglas H. Forde
                                       ----------------------------------
                                       Name:Douglas H. Forde
                                       Title:

                   [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
                     SIGNATURE PAGES OF PURCHASER TO FOLLOW]

<PAGE>

                                    BIRCH CIRCLE LLC

                                    By:/s/ authorized representative
                                       -----------------------------
                                       Name:
                                       Title:

                                       Address for Notice:

                                       Birch Circle LLC
                                       c/o Citco Trustees (Cayman) Limited
                                       Commercial Centre
                                       P.O. Box 31106 SMB
                                       Grand Cayman, Cayman Islands
                                       British West Indies
                                       Facsimile No.: (345) 945-7566

                                       With copies to:

                                       Robinson  Silverman  Pearce  Aronsohn  &
                                       Berman LLP
                                       1290 Avenue of the Americas
                                       New York, NY  10104
                                       Facsimile No.:  (212) 541-4630 and (212)
                                                        541-1432
                                       Attn:  Eric L. Cohen, Esq.

                   [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
                      SIGNATURE PAGE FOR PURCHASER FOLLOWS]

<PAGE>

                                                                        Annex A

                              Plan of Distribution

     The  Selling  Stockholders  and  any  of  their  pledgees,   assignees  and
successors-in-interest  may, from time to time,  sell any or all of their shares
of Common Stock on any stock exchange,  market or trading  facility on which the
shares  are traded or in private  transactions.  These  sales may be at fixed or
negotiated  prices.  The  Selling  Stockholders  may  use any one or more of the
following methods when selling shares:

o    ordinary brokerage transactions and transactions in which the broker-dealer
     solicits purchasers;

o    block trades in which the broker-dealer will attempt to sell  the shares as
     agent but may position and resell a portion of the block  as  principal  to
     facilitate the transaction;

o    purchases by a broker-dealer as  principal  and resale by the broker-dealer
     for its account;

o    an  exchange  distribution  in  accordance with the rules of the applicable
     exchange;

o    privately negotiated transactions;

o    short sales;

o    broker-dealers may agree with the Selling Stockholders to sell a  specified
     number of such shares at a stipulated price per share;

o    a combination of any such methods of sale; and

o    any other method permitted pursuant to applicable law.

     The Selling Stockholders may also sell shares under Rule 144 under the
Securities Act, if available, rather than under this prospectus.

         The Selling Stockholders may also engage in short sales against the
box, puts and calls and other transactions in securities of the Company or
derivatives of Company securities and may sell or deliver shares in connection
with these trades. The Selling Stockholders may pledge their shares to their
brokers under the margin provisions of customer agreements. If a Selling
Stockholder defaults on a margin loan, the broker may, from time to time, offer
and sell the pledged shares.

         Broker-dealers engaged by the Selling Stockholders may arrange for
other brokers-dealers to participate in sales. Broker-dealers may receive
commissions or discounts from the Selling Stockholders (or, if any broker-dealer
acts as agent for the purchaser of shares, from the purchaser) in amounts to be
negotiated. The Selling Stockholders do not expect these commissions and
discounts to exceed what is customary in the types of transactions involved.

                                      -17-
<PAGE>

         The Selling Stockholders and any broker-dealers or agents that are
involved in selling the shares may be deemed to be "underwriters" within the
meaning of the Securities Act in connection with such sales. In such event, any
commissions received by such broker-dealers or agents and any profit on the
resale of the shares purchased by them may be deemed to be underwriting
commissions or discounts under the Securities Act.

         The Company is required to pay all fees and expenses incident to the
registration of the shares, including fees and disbursements of counsel to the
Selling Stockholders. The Company has agreed to indemnify the Selling
Stockholders against certain losses, claims, damages and liabilities, including
liabilities under the Securities Act.

                                      -18-Exhibit 10.12

CMI Employment Agreement

                              EMPLOYMENT AGREEMENT

         THIS AGREEMENT, made effective as of the _____________day of
_________________, 2000, by and between CeleXx Corporation, Inc., with offices
located at 7251 West Palmetto Park Road, Suite 106, Boca Raton, FL 33433
(hereinafter called the "Employer") and David R. Burke, Sr., who resides at 31
Susan Drive, Tewksbury, MA 01876 (hereinafter called the "Employee").

                                   WITNESSETH:

         Section 1.  Employment and Duties.
         The Employer employs the Employee to perform those duties as set forth
in Schedule 1 attached hereto as may be determined and assigned by the Employer.

         Section 2.  Performance.
         The Employee agrees to devote all of the Employee's working time and
best efforts to the performance of the Employee's duties as Chief Executive
Officer (CEO) and to the performance of other related duties as are assigned to
the Employee from time to time by the Employer.

         Section 3.  Term.
         This Agreement's term shall be for three years commencing
______________________, 2000, and terminating _______________________, 2003. At
the completion of the initial term of three years, this Agreement will be
automatically renewed for additional one-year periods, unless either party shall
give the other party two months written notice indicating that this Agreement
will not be further renewed.

1
<PAGE>

         Section 4.  Compensation and Benefits.
         For all the services to be rendered by the Employee in any capacity,
the Employer agrees to pay the Employee a starting salary of one hundred fifty
thousand dollars [$150,000.00] per annum, payable as five thousand seven hundred
sixty-nine dollars and 23/100 ($5,769.23) bi-weekly. The Employee will then be
given a yearly performance/salary review on each anniversary date of this
agreement. In addition, Employee shall be entitled to any and all benefits as
provided by the Employer including, but not limited to, 401K pension Plan ,
vacation plan (4 weeks), sick plan, health plan, life insurance plan, holiday
plan. If the Employee leaves the employment of the Employer prior to the
termination of this Agreement, regardless of reason, then the amount to which
the Employee is entitled shall be governed by Section 6 of this Agreement.

         Section 5.  Business Expenses.
         Consistent with the Employer's policy, the Employer will compensate the
Employee for eligible business expenses to include: travel, meals, and
miscellaneous expenses incurred locally; and travel, meals, lodging, and
miscellaneous expenses incurred while the Employee is away on business.
Reimbursement shall be made by the Employer upon submission of a signed
statement by the Employee itemizing the expenses and upon the Employee providing
receipts for such expenses.

2
<PAGE>

         Section 6.  Termination.
         Since the Employer greatly values the services anticipated to be
rendered by the Employee, upon termination of this Agreement, the Employee shall
be entitled to severance pay as set forth hereinafter.

         a.         Should the Employee choose to terminate this Agreement, then
the Employee shall submit, in writing, a two months notice and shall receive as
termination pay and any sums due for work performed by Employee, plus payment
for an accrued and unused vacation time. In addition, the Employee shall receive
an amount equal to one month's pay for each year of service as an Employee of
Employer (Employees start date is 5/15/84), up to a maximum of equal to one
years salary.
         b.         Should the Employer terminate this Agreement for cause,
pursuant to paragraph 11 hereof, then the Employee shall receive as termination
pay any sums due for work performed by Employee, plus payment for any accrued,
but unused vacation time and no other amounts. Further, the payment of these
sums shall not constitute a waiver for any claims for damages, which the
Employee has caused to the Employer related to the termination for cause.
         c.         Should the Employer terminate this Agreement at any time
during the period of this Agreement and should the termination not be for cause
pursuant to paragraph 11, then and in that event, the Employee shall receive
upon termination pay any sums set forth in the next paragraph.
         d.         The Employee shall receive as termination pay any sums sue
for work performed by Employee, plus payment for any accrued, but unused
vacation time. In addition, the Employee shall receive an amount equal to one

3
<PAGE>

month's pay for each year's employment (Employees start date is 5/15/84), up to
a maximum of one years salary, for which the Employee has been employed by
either Computer Marketplace, Inc. (CMI) or the Employer. This payment shall be
based on the level of the pay received by the Employee for the final year of his
or her employment.
         e.       The amount of  termination  pay received by Employee  shall be
additional  consideration  for the Restrictions set forth in Section 10 of this
Agreement.

         Section 7.  Death.
         In the event of the Employee's death during this Agreement's term, it
shall terminate immediately. Unless the Employee has left a different
designation on file with the Employer, the Employee's surviving spouse or , in
the even of the demise of the surviving spouse, the minor children, including
all children who are full-time students regardless of age, shall be entitled to
receive any outstanding compensation due the Employee and plus an amount equal
to three months pay. This compensation shall be paid in equal monthly
installments, commencing the first of the month following the Employee's death,
and shall be paid proportionately over three months.

         Section 8.  Disability.
         If, during this Agreement's term, the Employee should fail to perform
any duties on account of illness or other incapacity, and this illness or
incapacity shall continue for three months, the Employer shall have the right to
terminate this Agreement. In that event, the Employer shall be obligated to pay
the Employee any compensation up to the termination date.

4
<PAGE>

         Section 9.  Discontinuance of Business.
If, during this Agreement's term, the Employer should involuntarily discontinue
or interrupt the operation of its business, this Agreement shall automatically
terminate without further liability on the part of the parties.

         Section 10.  Restrictions.
         a.         During this Agreement's term, the Employee agrees to devote
all of his working time and best efforts to further the Employer's interests,
and shall not directly or indirectly, alone or as a partner, officer, director,
or stockholder of any other institution, be engaged in any competing business
activity whatsoever, or continue or assume any other competing corporate
affiliations without the written consent of the Employer's Board of Directors.
Notwithstanding the foregoing, the Employee may be a shareholder of any publicly
traded corporation or entity, provided that the Employee and any members of
employee's immediate family or any entity owned by Employee or his immediate
family shall not own in excess of two percent of the outstanding stock of any
such publicly traded entity without the written consent of Employer's Board of
Directors.
         b.       The Employee acknowledges:
                  (1)      That the Employer's products and services are highly
specialized items;
                  (2)      That the Employer has a  proprietary  interest in the
identity of its  customers  and customer lists; and
                  (3)        That documents and information regarding the
Employer's customers, employees, internal procedures, quoting guidelines,
services, systems, lease and financing programs, re-marketing programs, sales,

5
<PAGE>

pricing, costs, and the specialized requirements of the Employer's customers are
highly confidential and constitute trade secrets. During this Agreement's term,
the Employee will have access to and become familiar with various Employer trade
secrets and confidential information. The Employee acknowledges that this
confidential information and trade secrets are owned and shall continue to be
owned solely by the Employer.

                  (4)        That the Employee shall not use confidential
information and trade secrets for any purpose whatsoever or divulge this
information to any person other than the Employer or persons to whom the
Employer has given consent, unless this information has already become common
knowledge, or unless the Employee is compelled to disclose it by governmental
process.
                  (5)        That any work done by Employee during the term of
this Agreement shall belong to the Employer. If a copyright may be obtained for
any such work, the said copyright shall be in the name of the Employer and shall
fully belong to the Employer. Further, any source code or other programs or
materials developed during the term of this Agreement shall be the property of
the Employer, whether or not these items may be subject to copyright protection.
         c.         The Employee covenants to the Employer that for two years
following the date of Termination of Employment for cause as defined in Section
11, or if the Employee shall resign absent a breach of this Agreement by the
Employer, as set forth in paragraph 6(c), then the Employee shall not, either
directly or indirectly, or through any person or other entity, or by any other
means perform any duties similar to the duties performed for the Employer for
any business, profession, or other endeavor that is a substantial and direct

6
<PAGE>

competitor of the Employer and is located within a 30 mile radius of Computer
Marketplace, Inc. located at 885 Main Street, Tewksbury, MA 01876.

         Section 11.  Termination of Employment. Employer may terminate Employee
for cause due to:
         (a)        Failure or refusal of the Employee to adequately perform
employment duties and obligations, including, but not limited to fraud,
dishonesty, negligence, willful misconduct, unethical behavior or conduct,
insubordination, or inattention to or substandard performance of duties, all as
determined by the Board of Directors of the Company; excessive absences from
work; or engaging in activities prohibited by policies of the Company as
communicated to Employee by the Company;
         (b)      Any breach by the Employee of this Agreement's provisions;
         (c)      The  conviction of the Employee for any felony  or any  other
criminal  offense  involving dishonesty or moral turpitude.

         Section 12.  Reformation.
         In the event that a court determines that any part of paragraph 10 is
invalid or unenforceable by reason of overly broad territorial or excessive time
restrictions or otherwise, then the parties request the court to modify these
restrictions or Section 10 to the extent necessary for it to be valid and
enforceable and to enforce it to that extent.

7
<PAGE>

         Section 13.  Employer Property.
         Upon separation of employment for any reason, the Employee shall
immediately deliver to the Employer all documentation and other property that
belongs to the Employer that pertains to the business or financial affairs of
the Employer.

         Section 14.  Remedies.
         The parties to this Agreement acknowledge that any breach, violation,
or default by the Employee of the provisions contained in Section 10 would
result in irreparable harm and damage to the Employer, which harm and damage
would be extremely difficult to quantify and, accordingly, the Employee consents
to the jurisdiction of a court for the entry of an injunction, temporary or
permanent, enjoining the Employee from competing with the Employer, or the entry
by the court of an order requiring the Employee to deliver to the Employer
documentation or other property that belongs to the Employer.

         Section 15.  Benefits.
         The Employer agrees to provide to the Employee during this Agreement's
term those additional benefits, commonly known as "fringe benefits," which are
generally extended by the Employer to its employees, as set forth on Exhibit 4
attached hereto. All fringe benefits received by the Employee at the time of
this Agreement's effective date shall be maintained throughout this Agreement's
term. Fringe benefits include, but are not limited to items such as, holidays,
vacations, comprehensive major medical, group life insurance, long-term
disability/accidental death, short-term disability, expense supplement plan,
educational assistance program, employee assistance program, health maintenance
organization,  sick leave, Christmas cash bonus, service recognition awards,

8
<PAGE>

and so forth. Nothing herein shall require the Employer to provide any such
fringe benefits to the Employee, which are not otherwise granted herein as set
forth on Schedule 4 or are not otherwise provided to other employees.

         Section 16.  Effect of Waiver.
         The waiver by either party of a breach of any provision of this
Agreement shall not operate as or be construed as a waiver of any subsequent
breach.

         Section 17.  Arbitration.
         Any controversy arising from or related to this Agreement shall be
determined by final and binding arbitration in Massachusetts according to the
rules of the American Arbitration Association, and judgment upon any award may
be entered in any court having jurisdiction.

         Section 18.  Notice.
         Any and all notices referred to in this Agreement shall be sufficient
if furnished in writing and sent by certified mail return receipt requested to
the parties at the address given above or subscribed below following their
signatures to this Agreement.

         Section 19.  Assignment.
         The rights and benefits of the Employer under this Agreement shall be
transferable, and all covenants and agreements shall inure to the benefits of
and be enforceable by or against its successors and assigns.

         Section 20.  Separability.

9
<PAGE>
         If, for any reason, any section or portion of this Agreement shall be
held by a court to be invalid or unenforceable, it is agreed that this shall not
affect any other section or portion of this Agreement.

10
<PAGE>

         Section 21.  Applicable Law.
         This Agreement shall be interpreted according to the laws of the
Commonwealth of Massachusetts.

/s/ David R. Burke, Sr.                        /s/ David C. Langle  CFO
 -----------------------                           -------------------------
By: Employee                                   By: Celexx Corporation

Dated: ___________________________                   Dated: 4-10-00
                                                            -------

11

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