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                                                                   EXHIBIT 10.21



March 3, 2000


FloNetwork Inc.
260 King Street East
Toronto, Ontario, Canada
M5A 1K3

Gentlemen:

This letter will confirm our understanding that SG Cowen Securities Corporation
("SG Cowen") has been engaged to act as financial advisor to FloNetwork Inc.
(the "Company"), in connection with the Company's general financial strategy and
planning.

1.    FINANCIAL ADVISORY SERVICES
      In its capacity as financial advisor and at the Company's request, SG
      Cowen will provide the Company with general financial advice and
      assistance.

2.    TERM
      SG Cowen's engagement shall terminate twelve (12) months from the date of
      this Agreement, unless extended in writing by SG Cowen and the Company.
      Either SG Cowen or the Company may terminate this Agreement at any time on
      10 days prior written notice. A "Residual Period" shall extend for twelve
      (12) months from the date of termination or expiration of this Agreement.
      Within 15 days of the termination or expiration of this Agreement, SG
      Cowen shall provide the Company with a written list of SG Cowen Parties as
      defined below.

      Nothing contained in this Agreement will require the Company to accept the
      terms of any proposal or to negotiate with any person. The Company has the
      right in its sole discretion to reject any Transaction regardless of the
      terms proposed.

3.    FEES


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FloNetwork Inc.
March 3, 2000
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      The Company agrees to pay SG Cowen as compensation for its services under
      this engagement the following cash fees net of any value-added taxes paid
      or payable hereunder:

      a.  RETAINER FEE. A non-refundable Retainer Fee of U.S. $50,000 shall be
          payable upon execution of this Agreement. The Retainer Fee shall be
          credited against any Transaction Fees or Break-Up Fees payable as
          described below.

      b.  TRANSACTION FEE. If a Transaction is consummated, or a definitive
          agreement with respect to the Transaction is executed, during the term
          of this Agreement or if during the Residual Period with a party that
          SG Cowen had contacted or with whom it had had discussions on behalf
          of the Company in connection with a Transaction with the prior
          approval of the Company (a "SG Cowen Party"), SG Cowen shall be paid a
          Transaction Fee, payable in U.S. dollars, at the closing of the
          Transaction equal to:

          (i.)    for Transactions that close prior to the effectiveness of the
                  registration statement filed with the Securities and Exchange
                  Commission in connection with the initial public offering of
                  the Company's common stock (the "Effective Time"), six tenth
                  of one percent (0.6%) of amount of aggregate consideration (as
                  defined below) up to U.S. $300 million, plus one percent
                  (1.0%) of amount of aggregate consideration in excess of U.S.
                  $300 million; or

          (ii.)   for  Transactions  that close after the  Effective  Time,  one
                  percent  (1.0%) of the amount of  aggregate consideration.

          For an Acquisition Transaction, SG Cowen shall only be entitled to the
          Transaction Fee if SG Cowen provides services in connection therewith
          at the request of the Company (it being understood that the Company
          shall be entitled to retain any investment banker or no investment
          banker to provide services to it in connection with an Acquisition
          Transaction).


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FloNetwork Inc.
March 3, 2000
Page 3


          If the Company enters into discussions during the Residual Period for
          a Transaction which SG Cowen would be entitled to a Transaction Fee SG
          Cowen shall provide the services contemplated hereby in connection
          with such Transaction, if the Company requests such services and
          provides sufficient and reasonable notice to SG Cowen.

      c.  BREAK-UP FEE. If, following or in connection with the termination,
          abandonment or failure to occur of any proposed Transaction (as to
          which SG Cowen would otherwise have been entitled to fees hereunder),
          and during the term of this Agreement or during the Residual Period,
          the Company is entitled to receive a break-up, termination, "topping,"
          expense reimbursement or similar fee or payment (including, without
          limitation, any judgment for damages or amount in settlement of any
          dispute as a result of such termination, abandonment or failure to
          occur), the Company shall pay SG Cowen a cash fee, payable promptly
          following the Company's receipt of such fee, payment, judgment or
          amount, equal to 25% of the aggregate amount of all fees, payments,
          judgments or amounts received.

      Unless otherwise specified in this Agreement, compensation which is
      payable to SG Cowen pursuant to this Agreement shall be paid by the
      Company to SG Cowen at the closing of a Transaction, except that
      compensation attributable to that part of the aggregate consideration
      which is contingent upon the occurrence of some future event shall be paid
      by the Company to SG Cowen at the receipt of such aggregate consideration.

      In the event the Transaction involves less than all of the voting
      securities or assets of the Company or Target (as defined herein), as the
      case may be, but 50% or more of such securities or assets, aggregate
      consideration shall be calculated as if all such securities or assets were
      being acquired, and in any event the Transaction shall be deemed
      consummated upon the acquisition of a majority of the securities or assets
      to be acquired pursuant to such Transaction.

4.    OUT-OF-POCKET EXPENSES


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FloNetwork Inc.
March 3, 2000
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      The Company shall, upon request, reimburse SG Cowen for travel and all
      other reasonable out-of-pocket expenses (including the reasonable fees and
      disbursements of SG Cowen's counsel, if any) incurred in connection with
      the engagement; provided that in no event shall such expenses exceed
      $25,000 without the Company's prior written consent, which consent shall
      not be unreasonably withheld.

5.    CERTAIN DEFINITIONS

      TRANSACTION.  A "Transaction" shall mean an "Acquisition Transaction"
      and/or a "Sale Transaction."

      An "Acquisition Transaction" shall mean one or a series of transactions
      whereby, directly or indirectly, control of or a material interest in an
      entity (the "Target") or any of its businesses or assets are transferred
      to or combined with the Company or any person or one or more persons
      formed by or affiliated with the Company (collectively, an "Acquisition
      Affiliate"), including, without limitation, a disposition or exchange of
      capital stock or assets, a merger or consolidation, a tender or exchange
      offer, a leveraged buyout, or the formation of a joint venture or
      partnership or any similar transaction.

      A "Sale Transaction" shall mean one or a series of transactions whereby,
      directly or indirectly, control of or a material interest in the Company
      or any of its businesses or assets are transferred to or combined with
      that of any person or one or more persons formed by or affiliated with
      such person (collectively, the "Purchaser"), including, without
      limitation, a disposition or exchange of capital stock or assets, a merger
      or consolidation, a tender or exchange offer, a leveraged buyout, or the
      formation of a joint venture or partnership or any similar transaction.

      AGGREGATE CONSIDERATION. For purposes hereof, the term "aggregate
      consideration" means the total amount of cash and the fair market value
      (on the date of payment) of all other consideration paid or payable
      (including amounts paid into escrow) by (i) (in the case of an Acquisition
      Transaction) an Acquisition Affiliate or any other person to the Target or


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FloNetwork Inc.
March 3, 2000
Page 5


      its securityholders in connection with the Transaction (or any related
      transaction), including amounts paid or payable in respect of convertible
      securities, warrants, stock appreciation rights, options or similar
      rights, whether or not vested, plus the principal amount of all
      indebtedness for borrowed money as set forth in the most recent
      consolidated balance sheet of the Target prior to consummation of the
      Transaction or, in the case of a purchase of assets, all indebtedness for
      borrowed money assumed by the Acquisition Affiliate or any other person
      and/or (ii) (in the case of a Sale Transaction) a Purchaser or any other
      person to the Company or its securityholders in connection with the
      Transaction (or any related transaction), including amounts paid or
      payable in respect of convertible securities, warrants, stock appreciation
      rights, options or similar rights, whether or not vested, plus the
      principal amount of all indebtedness for borrowed money as set forth in
      the most recent consolidated balance sheet of the Company prior to
      consummation of the Transaction or, in the case of a sale of assets, all
      indebtedness for borrowed money assumed by the Purchaser or any other
      person.

      Aggregate consideration shall also include (A) (in the case of an
      Acquisition Transaction) the aggregate amount of any dividends or other
      distributions declared by the Target after the date hereof, other than
      normal quarterly cash dividends, and, in the case of a sale of assets, the
      net value of any current assets not sold by the Target and (B) (in the
      case of a Sale Transaction) the aggregate amount of any dividends or other
      distributions declared by the Company after the date hereof, other than
      normal quarterly cash dividends, and, in the case of a sale of assets, the
      net value of any current assets not sold by the Company.

      The fair market value of any securities (whether debt or equity) or other
      property shall be determined as follows:

      a.  the value of securities that are freely tradable in an established
          public market will be determined on the basis of the average closing
          market prices on the fifteen trading days prior to the closing of the
          Transaction; and


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FloNetwork Inc.
March 3, 2000
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      b.  the value of securities that are not freely tradable or have no
          established public market, and the value of aggregate consideration
          that consists of other property, shall be the fair market value as
          determined in good faith by SG Cowen and the Company.

6.    INFORMATION
      The Company will furnish, or cause to be furnished, to SG Cowen (and will
      request that any potential Target and Purchaser furnish SG Cowen) such
      information as SG Cowen reasonably believes appropriate to its engagement
      hereunder (all such information, the "Information"), and the Company
      represents that all such Information furnished by it will be accurate and
      complete in all material respects at the time furnished. The Company will
      notify SG Cowen promptly after becoming aware of it of any change that may
      be material in such Information.

      It is understood that SG Cowen will be entitled to rely on and use the
      Information and other information that is publicly available without
      independent verification, and will not be responsible in any respect for
      the accuracy, completeness or reasonableness of all such Information or to
      conduct any independent verification or any appraisal or physical
      inspection of properties or assets.

      SG Cowen will assume that all financial forecasts have been reasonably
      prepared and reflect the best then currently available estimates and
      judgments of the Company's or the potential Target's or Purchaser's
      management as to the expected future financial performance of the Company
      or any potential Target or Purchaser.

7.    DISCLOSURE
      The Company acknowledges that all advice given by SG Cowen in connection
      with its engagement hereunder is for the benefit and use of the Board of
      Directors of the Company in considering the Transaction. The Company
      agrees that no such advice shall be used for any other purpose or be
      disclosed, reproduced, disseminated, quoted or referred to at any time, in
      any manner or for any purpose, nor shall any public references to SG Cowen
      be made by or on behalf of the Company, in each


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FloNetwork Inc.
March 3, 2000
Page 7


      case without SG Cowen's prior written consent, which consent shall not be
      unreasonably withheld except as may be required to comply with law.

      SG Cowen shall not make any representation or deliver any material to any
      person without the prior consent of the Company.

8.    NO THIRD PARTY BENEFICIARIES
      The Company acknowledges and agrees that SG Cowen has been retained to act
      as financial advisor to the Company, and not as an advisor to or agent of
      any other person, and that the Company's engagement of SG Cowen is not
      intended to confer rights upon any person not a party to this Agreement
      (including shareholders, employees or creditors of the Company) as against
      SG Cowen or its affiliates, or their respective directors, officers,
      employees or agents.

9.    INDEPENDENT CONTRACTOR
      SG Cowen shall act as an independent contractor under this Agreement, and
      any duties arising out of its engagement shall be owed solely to the
      Company.

10.   INDEMNIFICATION
      The Company and SG Cowen agree to the provisions with respect to the
      Company's indemnity of SG Cowen and other matters set forth in Schedule I,
      the terms of which are incorporated herein in their entirety.

11.   PUBLICITY
      The Company acknowledges that upon completion of a Transaction, SG Cowen
      may, at its own expense, place an announcement in such newspapers and
      periodicals as it may choose, stating that SG Cowen has acted as financial
      advisor to the Company in connection with such Transaction.

12.   AMENDMENTS AND SUCCESSORS
      This Agreement may not be waived, amended, modified or assigned, in any
      way, in whole or in part, including by operation of law, without the prior
      written consent of the Company and SG Cowen. The provisions of


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FloNetwork Inc.
March 3, 2000
Page 8


      this Agreement shall inure to the benefit of and be binding upon the
      successors and assigns of the Company and SG Cowen.

13.   ENTIRE AGREEMENT
      This Agreement constitutes the entire agreement between SG Cowen and the
      Company, and supersedes any prior agreements and understandings, with
      respect to the subject matter of this Agreement. The Company acknowledges
      that the execution of this Agreement or any act of SG Cowen under this
      Agreement does not constitute a commitment by SG Cowen or any of its
      affiliates to provide any type of financing or to purchase any type of
      securities.

14.   NO BROKERS
      The Company acknowledges and agrees that there are no brokers, agents,
      representatives or other parties that have an interest in compensation
      paid or payable to SG Cowen hereunder.

15.   TERMINATION & EXPIRATION
      Upon termination or expiration, this Agreement shall have no further force
      or effect, except that the provisions concerning the Company's obligations
      to SG Cowen and certain related persons provided in Schedule I, the
      Company's obligation to pay SG Cowen fees and expenses as described in
      this Agreement, the status of SG Cowen as an independent contractor, the
      limitation on to whom SG Cowen shall owe any duties, governing law, choice
      of forum, successors and assigns, and waiver of the right to trial by jury
      shall survive any such termination or expiration of this Agreement.

16.   GOVERNING LAW AND JURISDICTION
      This letter and any claim or dispute of any kind or nature whatsoever
      arising out of or in any way relating to this Agreement, directly or
      indirectly (including any claim concerning advice provided pursuant to
      this Agreement), shall be governed by and construed in accordance with the
      laws of the State of New York. Any rights to trial by jury with respect
      to any claim or proceeding related to, or arising out of, this agreement
      are waived by SG Cowen and the Company.

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FloNetwork Inc.
March 3, 2000
Page 9


We are pleased to accept this engagement and look forward to working with the
Company. Please confirm that the foregoing is in accordance with your
understanding by signing and returning to us the enclosed duplicate of this
letter, which shall thereupon constitute a binding Agreement.

Very truly yours,


SG COWEN SECURITIES CORPORATION




By:      /s/ Georges Azzam
         -------------------------------
         Georges Azzam
         Managing Director




Agreed as of the date hereof

FLONETWORK INC.




By:      /s/ Eric Goodwin
         -------------------------------
Name:
Title:



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                                   SCHEDULE I

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         The Company agrees to indemnify SG Cowen, each controlling person and
each of their respective directors, officers, employees, agents, affiliates and
representatives (each of the foregoing, an "Indemnified Party") and hold each of
them harmless against any and all losses, claims, damages, expenses,
liabilities, joint or several (collectively, "Liabilities") to which the
Indemnified Parties may become subject arising in any manner out of or in
connection with the letter agreement to which this Schedule I is attached (the
"Letter Agreement"), unless it is finally judicially determined that the
Liabilities resulted primarily from the gross negligence or willful misconduct
of an Indemnified Party. The Company further agrees to reimburse each
Indemnified Party immediately upon request for all expenses (including
attorneys' fees and expenses) as they are incurred in connection with the
investigation of, preparation for, defense of, or providing evidence in, any
commenced or threatened action, claim, proceeding or investigation (including,
without limitation, usual and customary per diem compensation for any
Indemnified Party's involvement in discovery proceedings or testimony), in
connection with or as a result of either SG Cowen's engagement or any matter
referred to in the Letter Agreement whether or not SG Cowen is a party to such
proceeding. The Company also agrees that no Indemnified Party shall have any
liability (whether direct or indirect, in contract or tort or otherwise) to the
Company or its securityholders or creditors related to or arising out of the
engagement of SG Cowen pursuant to, or the performance by SG Cowen of the
services contemplated by, the Letter Agreement, unless it is finally judicially
determined that such liability resulted primarily from the gross negligence or
willful misconduct of SG Cowen. The Company and SG Cowen will promptly notify
the other party in writing of the assertion against it or any other person of
any claim or the commencement of any action, proceeding or investigation
relating to or arising out of any matter referred to in the Letter Agreement,
including an Indemnified Party's services thereunder; provided that SG Cowen's
failure to notify will not affect the Indemnified Parties' right to
indemnification except to the extent the Company is materially prejudiced
thereby.

         If any such claim, action, proceeding or investigation shall be brought
against an Indemnified Party, and SG Cowen shall notify the Company, the Company
shall be entitled to participate therein and, to the extent that it wishes,
assume the defense thereof with counsel reasonably satisfactory to SG Cowen.
After notice from the Company to SG Cowen of its election to assume the defense
of such claim, action, proceeding or investigation, the Company shall not be
liable to the Indemnified Party under the indemnification provisions of the
Letter Agreement for any legal or other expenses subsequently incurred by the
Indemnified Parties in connection with the defense thereof other than reasonable
costs of investigation; provided, however, that the Indemnified Parties shall
have the right to retain separate counsel, but the fees and expenses of such
counsel shall be at the expense of the Indemnified Parties, unless (i) the
employment of such counsel has been specifically authorized in writing by the
Company, (ii) the Company has failed to assume the defense and employ counsel as
required above, or (iii) the named parties to any such action (including any
impleaded


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parties) include both (a) the Indemnified Parties and (b) the Company, and the
Indemnified Parties shall have reasonably determined that the defenses available
to them are not available to the Company and/or may not be consistent with the
best interests of the Company or the Indemnified Parties (in which case the
Company shall not have the right to assume the defense of such action on behalf
of the Indemnified Parties); it being understood, however, that the Company
shall not, in connection with any one such action or separate, substantially
similar or related actions in the same jurisdiction arising out of the same
general allegations or circumstances, be liable for the reasonable fees and
expenses of more than one separate firm of attorneys for the Indemnified
Parties, which firm shall be designated in writing by SG Cowen.

         The Company agrees that, without an Indemnified Party's prior written
consent, which consent shall not be unreasonably withheld, it will not settle,
compromise or consent to the entry of any judgment in any commenced or
threatened claim, action, proceeding or investigation in respect of which
indemnification could be sought under the indemnification provisions of the
Letter Agreement (whether or not SG Cowen or any other Indemnified Party is an
actual or potential party to such claim, action, proceeding or investigation)
unless (a) such settlement, compromise or consent includes an unconditional
release of SG Cowen and each Indemnified Party from all liability arising from
such claim, action, proceeding or investigation, and (b) the parties to the
settlement, compromise or consent agree that the terms of such settlement,
compromise or consent shall remain confidential to the extent permitted by law.

         The Company and SG Cowen agree that if any indemnification or
reimbursement sought pursuant to the preceding paragraph is for any reason
unavailable or insufficient to hold it harmless (except by reason of the gross
negligence or willful misconduct of an Indemnified Party) then, whether or not
SG Cowen is the person entitled to indemnification or reimbursement, the Company
and SG Cowen shall contribute to the Liabilities for which such indemnification
or reimbursement is held unavailable in such proportion as is appropriate to
reflect (a) the relative benefits to the Company on the one hand, and SG Cowen
on the other hand, in connection with the transaction to which such
indemnification or reimbursement relates, (b) the relative fault of the parties,
and (c) other equitable considerations; provided, however, that in no event
shall the amount to be contributed by SG Cowen exceed the fees actually received
by SG Cowen under the Letter Agreement. The Company agrees that for the purposes
of this paragraph the relative benefits to the Company and any Indemnified Party
of the contemplated transaction (whether or not such transaction is consummated)
shall be deemed to be in the same proportion that the aggregate cash
consideration and value of securities or any other property payable,
exchangeable or transferable (or contemplated to be payable, exchangeable or
transferable) in such transaction bears to the fees paid or payable to SG Cowen
under the Letter Agreement.

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