REVENUE SHARING AGREEMENT


         This Revenue  Sharing  Agreement (the  "Agreement") is made and entered
into as of this  18th day of  February,  2000  (the  "Effective  Date"),  by and
between Summus,  Ltd., a Delaware corporation  ("Licensor"),  and High Speed Net
Solutions,  Inc.,  a Florida  corporation  ("Customer"),  with  reference to the
following facts and circumstances:

A. Licensor has developed certain software  programs and anticipates  developing
certain software  programs and will promote  licensing of such Licensed Software
as described in the Software License Agreement executed simultaneously with this
Agreement.

B. Licensor and Customer  envision a close working  relationship with respect to
Licensor's software such that Customer  anticipates  regularly:  (i) acting as a
beta-version user of Licensor's software;  (ii) providing  prospective licensees
for Licensor's software; and (iii) providing references for or demonstrations of
Licensor's  software.  Licensor  desires to create an incentive  for Customer to
participate in these activities and as such Customer desires that Licensor share
with Customer  revenues  received from third party users of Licensor's  software
and pay Customer for certain agency activities.

C.  Therefore,  to effect these  incentives,  Licensor and Customer have entered
into  this  Agreement   simultaneously   with  executing  the  Software  License
Agreement,  and Customer desires to receive such payments and revenue sharing in
consideration for Customer's  efforts on behalf of Licensor and on the terms and
conditions contained in this Agreement.

         NOW THEREFORE,  based on the above premises and in consideration of the
mutual covenants and agreements contained herein, the parties agree as follows:

1.       DEFINITIONS.

         As used herein, the following terms, when used in the singular, plural,
or possessive form shall have the respective meanings set forth below:

         1.1  "Agency Payment" shall  have  the  meaning given in Section 2.2 of
this Agreement.

         1.2  "Licensed  Software"  shall have the meaning given in the Software
License Agreement executed simultaneously with this Agreement.

         1.3 "Quarterly Period" shall mean each calendar quarter (i.e., a period
of three (3) consecutive  calendar months commencing on January 1, April 1, July
1 or  October  1 of each  year)  during  the  term of this  Agreement,  with the
exception of the first Quarterly  Period,  which shall commence on the Effective
Date and end on the last day of that calendar quarter. The last Quarterly Period
shall end on the date of expiration or  termination of this  Agreement,  thereby
possibly comprising fewer than three (3) months.
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         1.4 "Related  Agreements"  shall mean agreements  between  Licensor and
Customer  related to or incorporated  by the MLA and agreements  based on either
Licensor or Customer's rights and obligations under the MLA, including,  but not
limited  to, the Letter  Agreement  incorporated  by the MLA and any  agreements
relating to or arising from business with Samsung or its affiliates.

         1.5 "Revenue  Sharing  Payment" shall have the meaning given in Section
2.1 of this Agreement.

         1.6 "Samsung  Payment" shall  have the  meaning given in Section 2.3 of
this Agreement.

2.       LICENSOR PAYMENTS TO CUSTOMER.

         2.1 REVENUE SHARING. During the term of this Agreement,  Licensor shall
pay to Customer  twenty  percent  (20%) of all  revenue  received by Licensor in
connection  with (i)  licensing  of the  Licensed  Software,  or of the  product
functionality  contained in the Licensed Software,  for creation and/or delivery
of Rich Media  Content,  for  service  bureau use or (ii) use by Licensor or any
affiliate of Licensor of the Licenseed  Software,  or the product  functionality
contained in the Licensed  Software,  for the creation  and/or  delivery of Rich
Media  content for service  bureau use by Licensor or any  affiliate of Licensor
("Revenue Sharing Payment").  For this purpose,  "service bureau use" shall mean
use to  provide  Designated  Activities  (as  defined  in the  Software  License
Agreement)  to or  for  the  benefit  of a  licensee's  unaffiliated  customers;
provided,  however,  that service bureau use shall not include use by enterprise
licensees.  An  "enterprise  licensee"  is a licensed  entity that  provides the
Designated  Activities on a not-for-profit  basis in furtherance of the entity's
promotional  goals,  or  those of its  affiliates,  and  does  not  include  the
circumstance  where  an  entity  provides  the  Designated   Activities  for  an
unaffiliated third party.  "Service bureau use" includes  circumstances  where a
licensee the Designated Activities through use of the Licensed Software,  unless
the  licensee  and  the  outsource  services  provider  are  part  of  the  same
wholly-owned  corporate group. For the purpose of this Section 2.1,  "affiliate"
is a person or entity that directly or indirectly controls, is controlled by, or
is under common control with a specified person.

         2.2 AGENCY PAYMENTS.  During the term of this Agreement,  upon Customer
identifying  to Licensor a qualified  prospect that  subsequently  becomes a new
customer of Licensor within one year of such identification,  Licensor shall pay
to Customer  fifteen percent (15%) of all revenue received by Licensor until the
end of the first year of revenue  receipts  for such new  customer  (the "Agency
Payment"). The first year of revenue receipts shall be the time period beginning
on the date when Licensor signs an agreement with such new customer,  and ending
on the first anniversary of such date.

         2.3 SAMSUNG PAYMENTS. During the term of this Agreement, Licensor shall
pay to Customer  the  percentage,  as given in the table  below for  progressive
years under this  Agreement,  of all revenues  accruing to  Licensor,  excluding
non-recurring  expenses,  from  business  activity  arising  from Samsung or its
affiliates,  including  but not  limited to,  license  fees,  maintenance  fees,
support fees, and royalties (the "Samsung Payment").
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           YEAR                    PERCENTAGE PAID TO CUSTOMER
           ----                    ---------------------------
           1                       Fifty Percent (50%)
           2                       Fifty Percent (50%)
           3                       Forty Percent (40%)
           4 through 6             Twenty Percent (20%)

         2.4 QUARTERLY  RECONCILIATION.  Licensor shall reconcile  accounts each
Quarterly Period and shall pay the Revenue Sharing Payment,  Agency Payment, and
Samsung Payment within one month following the end of the Quarterly Period.  [TO
FACILITATE  TRANSACTING  SUCH PAYMENTS,  LICENSOR SHALL KEEP ACCOUNTING  RECORDS
ACCORDING TO GENERALLY ACCEPTED  ACCOUNTING  PRINCIPLES TO DOCUMENT ALL REVENUES
OF LICENSOR AND TO ALLOCATE GROSS  REVENUES  AMONG  REVENUES  GENERATED WITH THE
LICENSED SOFTWARE AND OTHER GROSS REVENUES.] Customer or its authorized agent or
representative shall have the right, at its expense and upon at least forty-five
(45)  business  days  written  notice to Licensor and during  Licensor's  normal
business  hours and no more often than once during any twelve (12) month period,
to enter  Licensor's  premises  for  purposes of auditing  all books of account,
documents,  records,  papers, and files,  whether in printed or electronic form,
relating to Licensor's  revenues from the Licensed Software,  and Licensor shall
make  all  such  items  available  to  Customer  or  its  authorized   agent  or
representative for that purpose.  If such audit reveals that sufficient payments
have not been paid by Licensor,  then Licensor shall pay any  additional  amount
found to be owed to Customer.  Customer shall bear the expense of any such audit
unless such audit  reveals  that the payments  actually  paid by Customer in any
twelve (12) month period are less than what should have been paid to Customer by
an amount  greater than five percent (5%) of the amount  actually paid, in which
event the costs of such audit shall be borne by Licensor.

3.       TERMINATION OF MLA AND RELATED AGREEMENTS.

         3.1  TERMINATION  OF  PRIOR  AGREEMENTS.  By  this  Agreement  and  the
Software License Agreement, Licensor and Customer specifically terminate the MLA
and the Related Agreements.

4.       LIMITATION OF LIABILITY.

         4.1  EXCLUDED  LIABILITY.  NEITHER  PARTY  SHALL BE LIABLE TO THE OTHER
PARTY , ITS AFFILIATES OR ANY THIRD PARTY BENEFICIARY FOR CONSEQUENTIAL  DAMAGES
OF ANY KIND (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS,
BUSINESS INTERRUPTION,  OR LOSS OF BUSINESS INFORMATION),  REGARDLESS OF WHETHER
THE PARTY LIABLE OR ALLEGEDLY LIABLE WAS ADVISED, HAD REASON TO KNOW, OR IN FACT
KNEW OF THE POSSIBILITY THEREOF.

5.       CONFIDENTIALITY.  This  Article 5 sets  forth the  procedures  by which
information  regarded as confidential by one party hereto (a "Disclosing Party")
may be disclosed to the other party hereto (the "Receiving Party").
<PAGE>

         5.1  GENERAL  REQUIREMENTS  AND  EXCLUSIONS.  During  the  term of this
Agreement and at all times thereafter, the parties will not, except as permitted
by the terms of this  Agreements,  disclose or use, either for itself or for the
benefit of any third party (whether in competition  with Licensor or Customer or
otherwise),  any confidential  information of the other party or its business or
affairs,  nor  will any  party  assist  any  person  or  entity  other  than the
Disclosing Party to secure any benefit from such confidential  information.  Any
oral, written, graphic, or electronically  transmitted information not generally
available to the public shall be construed as confidential  for purposes of this
Agreement,  which information  shall include,  without  limitation,  information
relating to a Disclosing Party's products,  processes,  techniques,  technology,
formulas,  research data,  passwords,  passcodes,  user identification  numbers,
e-mail addresses,  programming methods,  know-how, trade secrets,  customers and
suppliers,  information relating to sales and profits, other financial data, and
the terms and  conditions  of this  Agreements.  All such  information  shall be
collectively referred to herein as "Confidential Information." The provisions of
this  paragraph,  however,  shall not  prevent the  Receiving  Party from use or
disclosure  of  information  (i) as  necessary  in the  ordinary  course of such
party's  performance  under this  Agreement,  (ii) that is in the public  domain
(other than  information in the public domain as a result of a violation of this
Agreement  by  the  Receiving  Party),   (iii)  that  the  Receiving  Party  can
demonstrate  that it acquired  outside of its  affiliation  with the  disclosing
Party from a third party in rightful  possession of such information and who was
not prohibited from disclosing such information,  or (iv) disclosure of which is
required  by law or  court  order.  In the  event  that the  Receiving  Party is
requested or required (by oral question or request for  information or documents
in any legal proceeding, interrogatory, subpoena, civil investigative demand, or
similar process) to disclose Confidential Information,  the Receiving Party will
notify the Disclosing  Party promptly of such request or requirement so that the
Disclosing  Party  may seek an  appropriate  protective  order,  and if,  in the
absence of a protective order, the Receiving Party is, on the advice of counsel,
compelled to disclose any Confidential Information to any tribunal or else stand
liable for contempt,  the Receiving Party may disclose Confidential  Information
to such tribunal; provided, however, that the Receiving Party shall use its best
efforts to obtain an order or other assurance that  confidential  treatment will
be  accorded  to such  portion of the  Confidential  Information  required to be
disclosed.  Customer  shall be entitled to file this  Agreement as an exhibit to
one or more filings with the SEC, as recommended  by its counsel,  in which case
Customer  shall consult with Licensor  concerning the redaction of terms of this
Agreement under a confidentiality  request  associated with such filing, but the
implementation  of any such  redaction  shall be at the  SEC's  discretion.  The
obligation of  confidentiality  stated above shall survive  termination  of this
Agreement.

6.       TERM AND TERMINATION.

         6.1 TERM.  This  Agreement  shall become  effective as of the Effective
Date hereof and shall continue in force until the  Termination,  for any reason,
of the software license agreement executed of even date herewith.

         6.2 DEFAULT.  Subject to the dispute resolution procedures set forth in
Exhibit  0,  the  non-defaulting  party  shall be  entitled  to  terminate  this
Agreement at any time prior to the expiration of its term upon written notice to
<PAGE>

the defaulting  party if the defaulting  party breaches any material  obligation
hereunder, which breach continues or remains uncured for a period of thirty (30)
days after receipt of written notice from the non-defaulting  party, unless such
breach cannot by its nature be cured, in which event the defaulting  party shall
be deemed in default hereof upon the occurrence of such breach.

7.       GENERAL PROVISIONS.

         7.1 CONSTRUCTION AND VALIDITY; DISPUTE RESOLUTION. This Agreement shall
be  construed  and  enforced in  accordance  with the laws of the State of North
Carolina  (including its Uniform  Commercial Code), but without giving effect to
its  laws or  rules  relating  to  conflicts  of laws or to the  United  Nations
Convention on Contracts for the International Sale of Goods. In the event of any
conflict or  inconsistency  between the  provisions  of this  Agreement  and the
provisions  of any Exhibit  annexed  hereto or any document  referred to in this
Agreement or in any Exhibit  hereto,  the  provisions  of this  Agreement  shall
prevail  and govern its  interpretation  and  construction.  In the event of any
dispute or controversy  arising under or in connection with this Agreement,  the
dispute  resolution  procedures set forth in an exhibit to the Software  License
Agreement  shall  be  followed.  Pending  resolution  of  any  such  dispute  or
controversy,  both parties will continue their  performance under this Agreement
including  but not  limited to the payment of all amounts due to the other party
that are not in dispute  (provided  that Customer may make such  payments  under
protest, reserving any rights it may have to seek reimbursement from Licensor).

         7.2  ATTORNEYS'  FEES.  In  the  event  of  any  dispute,  controversy,
litigation or other proceedings (including proceedings in bankruptcy) concerning
or  related  to this  Agreement,  the  prevailing  party  shall be  entitled  to
reimbursement  of all of its costs,  including  reasonable  attorney  and expert
witnesses  fees and costs  (including  the  reasonable  value of the services of
in-house counsel), and court or arbitration fees and costs.

         7.3 VENUE.  Any dispute or  controversy  arising under or in connection
with this Agreement shall be settled in Wake County, North Carolina. The parties
hereby generally submit to the in personam jurisdiction of the Superior Court of
the State of North  Carolina  and the  Federal  District  Court for the  Eastern
District of North Carolina.

         7.4 NO JOINT  VENTURE.  Nothing  contained in this  Agreement  shall be
construed as creating a joint venture,  partnership  or employment  relationship
among the parties hereto nor shall any party have the right,  power or authority
to create any  obligation  or duty,  express or implied,  on behalf of any other
party.

         7.5  ASSIGNMENT.  Neither  party  hereto shall assign any of its rights
under this  Agreement  nor  delegate its duties  hereunder to another  person or
legal entity without the prior written consent of the other party, which consent
shall not be unreasonably withheld. This Agreement shall inure to the benefit of
and be binding upon the parties hereto, their respective  trustees,  successors,
permitted assigns and legal representatives.

         7.6  NON-WAIVER.  A failure of any party  hereto to exercise  any right
given to it hereunder,  or to insist upon strict  compliance by another party of
any  obligation  hereunder,  shall not  constitute a waiver of the first party's
<PAGE>

right to exercise such a right,  or to exact  compliance  with the terms hereof.
Moreover, waiver by any party of a particular default by another party shall not
be deemed a continuing  waiver so as to impair the aggrieved  party's  rights in
respect to any subsequent default of the same or a different nature.

         7.7  CAPTIONS AND  PARAGRAPH  HEADINGS. Captions and paragraph headings
used  in this  Agreement  are for  convenience  only  and are not a part of this
Agreement and shall not be used in construing it.

         7.8 SURVIVAL.  Any terms or conditions of this Agreement which by their
express terms extend beyond termination or expiration of this Agreement or which
by their nature  should so extend  shall  survive and continue in full force and
effect after any termination or expiration of this Agreement.

         7.9  AUTHORIZATION.  Customer and Licensor represent that all necessary
corporate   proceedings   have  been  taken  by  each  party  to  authorize  the
transactions  contemplated  by this  Agreement and that this  Agreement has been
executed  by a  duly-authorized  representative  of each  party  and  upon  such
execution shall constitute a valid and binding Agreement.

         7.10 NOTICES.  All notices or other communications that shall or may be
given pursuant to this Agreement, shall be in writing, in English, shall be sent
by  certified  or  registered  air mail with  postage  prepaid,  return  receipt
requested, by facsimile, telex or cable communication, or by hand delivery. Such
communications  shall be deemed given and received upon confirmation of receipt,
if sent by facsimile,  telex, or cable  communication;  or upon delivery if hand
delivered;  or upon receipt of mailing, if sent by certified or registered mail,
and shall be  addressed  to the  parties to such  addresses  as the  parties may
designate in writing from time to time.

         7.11  INVALIDITY.  Should any of the  non-material  provisions  of this
Agreement,  or  portions  thereof,  be found  invalid by any court of  competent
jurisdiction,  the remainder of this Agreement shall nonetheless  remain in full
force and effect.

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

         7.13  ENTIRE  AGREEMENT.  This  Agreement  and  the  Master  Agreement,
Software License Agreement and Software  Maintenance  Agreement contain the full
understanding  of the  parties  and  supersedes  all  prior  or  contemporaneous
agreements and understandings, written or oral, between the parties with respect
to the subject  matter  hereof;  and there are no  representations,  warranties,
agreements or  understandings  other than those expressly  contained  herein. No
alteration,  modification,  variation or waiver of this Agreement, or any of the
provisions hereof shall be effective unless executed by both parties in writing.


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<PAGE>


IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be duly
executed on the dates indicated below.


SUMMUS, LTD. ("LICENSOR")            HIGH SPEED NET SOLUTIONS, INC. ("CUSTOMER")



By: /s/ Dr. Bjorn Jawerth            By:    /s/ Andrew L. Fox
(Signature)                          (Signature)



Date:  March 13, 2000                Date:   February 18, 2000

Name: Dr. Bjorn Jawerth              Name:  Andrew L. Fox


Title: CEO                           Title:  Acting President and CEO,
                                             Executive Vice President