Exhibit 4.2

                                                                       EXHIBIT A

NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS CONVERTIBLE
HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE
SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN
AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE
SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO
SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE
COMPANY. THIS SECURITY AND THE SECURITIES ISSUABLE UPON CONVERSION OF THIS
SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER
LOAN SECURED BY SUCH SECURITIES.

Original Issue Date: January ___, 2006
Original Conversion Price (subject to adjustment herein): $1.00

                                                               $_______________


                            8% CONVERTIBLE DEBENTURE
                               DUE JULY ___, 2006

     THIS Convertible Debenture is one of a series of duly authorized and issued
8% Convertible Debentures of Navstar Media Holdings, Inc., a Nevada corporation,
having a principal place of business at _____________________________ (the
"Company"), designated as its 8% Convertible Debenture, due July [___, 2006
(this debenture, the "Debenture" and collectively with the other such series of
debentures, the "Debentures").

     FOR VALUE RECEIVED, the Company promises to pay to ________________________
or its registered assigns (the "Holder"), or shall have paid pursuant to the
terms hereunder, the principal sum of $_______________ by July ___, 2006 , or
such earlier date as this Debenture is required or permitted to be repaid as
provided hereunder (the "Maturity Date"), and to pay interest to the Holder on
the aggregate unconverted and then outstanding principal amount of this
Debenture in accordance with the provisions hereof. This Debenture is subject to
the following additional provisions:

     Section 1. Definitions. For the purposes hereof, in addition to the terms
defined elsewhere in this Debenture: (a) capitalized terms not otherwise defined
herein have the meanings given to such terms in the Purchase Agreement, and (b)
the following terms shall have the following meanings:


                                       1

     "Alternate Consideration" shall have the meaning set forth in Section 5(d).

     "Base Conversion Price" shall have the meaning set forth in Section 5(b).

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

     "Buy-In" shall have the meaning set forth in Section 4(d)(v).

     "Change of Control Transaction" means the occurrence after the date hereof
of any of (i) an acquisition after the date hereof by an individual or legal
entity or "group" (as described in Rule 13d-5(b)(1) promulgated under the
Exchange Act) of effective control (whether through legal or beneficial
ownership of capital stock of the Company, by contract or otherwise) of in
excess of 33% of the voting securities of the Company, or (ii) the Company
merges into or consolidates with any other Person, or any Person merges into or
consolidates with the Company and, after giving effect to such transaction, the
stockholders of the Company immediately prior to such transaction own less than
66% of the aggregate voting power of the Company or the successor entity of such
transaction, or (iii) the Company sells or transfers its assets, as an entirety
or substantially as an entirety, to another Person and the stockholders of the
Company immediately prior to such transaction own less than 66% of the aggregate
voting power of the acquiring entity immediately after the transaction, (iv) a
replacement at one time or within a three year period of more than one-half of
the members of the Company's board of directors which is not approved by a
majority of those individuals who are members of the board of directors on the
date hereof (or by those individuals who are serving as members of the board of
directors on any date whose nomination to the board of directors was approved by
a majority of the members of the board of directors who are members on the date
hereof), or (v) the execution by the Company of an agreement to which the
Company is a party or by which it is bound, providing for any of the events set
forth above in (i) through (iv).

     "Closing Price" means on any particular date (a) the last reported closing
bid price per share of Common Stock on such date on the Trading Market (as
reported by Bloomberg L.P. at 4:15 PM (New York time)), or (b) if there is no
such price on such date, then the closing bid price on the Trading Market on the
date nearest preceding such date (as reported by Bloomberg L.P. at 4:15 PM (New
York time)), or (c) if the Common Stock is not then listed or quoted on the
Trading Market and if prices for the Common Stock are then reported in the "pink
sheets" published by the National Quotation Bureau Incorporated (or a similar
organization or agency succeeding to its functions of reporting prices), the
most recent bid price per share of the Common Stock so reported, or (d) if the
shares of Common Stock are not then publicly traded the fair market value of a
share of Common Stock as determined by an appraiser selected in good faith by
the Holders of a majority in interest of the principal amount of Debentures then
outstanding.
                                       2

     "Common Stock" means the common stock, par value $0.001 per share, of the
Company and stock of any other class of securities into which such securities
may hereafter have been reclassified or changed into.

     "Conversion Date" shall have the meaning set forth in Section 4(a).

     "Conversion Price" shall have the meaning set forth in Section 4(b).

     "Conversion Shares" means the shares of Common Stock issuable upon
conversion of this Debenture.

     "Debenture Register" shall have the meaning set forth in Section 2(c).

     "Dilutive Issuance" shall have the meaning set forth in Section 5(b).

     "Dilutive Issuance Notice" shall have the meaning set forth in Section
5(b).

     "Effectiveness Period" shall have the meaning given to such term in the
Registration Rights Agreement.

     "Equity Conditions" shall mean, during the period in question, (i) the
Company shall have duly honored all conversions and redemptions scheduled to
occur or occurring by virtue of one or more Notice of Conversions of the Holder,
if any, (ii) all liquidated damages and other amounts owing to the Holder in
respect of this Debenture shall have been paid, (iii) there is an effective
Registration Statement pursuant to which the Holder is permitted to utilize the
prospectus thereunder to resell all of the shares issuable pursuant to the
Transaction Documents (and the Company believes, in good faith, that such
effectiveness will continue uninterrupted for the foreseeable future), (iv) the
Common Stock is trading on the Trading Market and all of the shares issuable
pursuant to the Transaction Documents are listed for trading on a Trading Market
(and the Company believes, in good faith, that trading of the Common Stock on a
Trading Market will continue uninterrupted for the foreseeable future), (v)
there is a sufficient number of authorized but unissued and otherwise unreserved
shares of Common Stock for the issuance of all of the shares issuable pursuant
to the Transaction Documents, (vi) there is then existing no Event of Default or
event which, with the passage of time or the giving of notice, would constitute
an Event of Default, (vii) the issuance of the shares in question (or, in the
case of a redemption, the shares issuable upon conversion in full of the
redemption amount) to the Holder would not violate the limitations set forth in
Section 4(c) and (viii) no public announcement of a pending or proposed
Fundamental Transaction, Change of Control Transaction or acquisition
transaction has occurred that has not been consummated.

     "Event of Default" shall have the meaning set forth in Section 8.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder.


                                       3

     "Fundamental Transaction" shall have the meaning set forth in Section 5(d).

     "Late Fees" shall have the meaning set forth in Section 2(c).

     "Mandatory Default Amount" shall equal the sum of (i) the greater of: (A)
130% of the principal amount of this Debenture to be prepaid, plus all accrued
and unpaid interest thereon, or (B) the principal amount of this Debenture to be
prepaid, plus all other accrued and unpaid interest hereon, divided by the
Conversion Price on (x) the date the Mandatory Default Amount is demanded or
otherwise due or (y) the date the Mandatory Default Amount is paid in full,
whichever is less, multiplied by the VWAP on (x) the date the Mandatory Default
Amount is demanded or otherwise due or (y) the date the Mandatory Default Amount
is paid in full, whichever is greater, and (ii) all other amounts, costs,
expenses and liquidated damages due in respect of this Debenture.

     "New York Courts" shall have the meaning set forth in Section 9(d).

     "Notice of Conversion" shall have the meaning set forth in Section 4(a).

     "Optional Redemption" shall have the meaning set forth in Section 6(a).

     "Optional Redemption Amount" shall mean the sum of (i) 100% of the
principal amount of the Debenture then outstanding, (ii) accrued but unpaid
interest and (iii) all liquidated damages and other amounts due in respect of
the Debenture.

     "Optional Redemption Date" shall have the meaning set forth in Section
6(a).

     "Optional Redemption Notice" shall have the meaning set forth in Section
6(a).

     "Optional Redemption Notice Date" shall have the meaning set forth in
Section 6(a).

     "Original Issue Date" shall mean the date of the first issuance of the
Debentures regardless of the number of transfers of any Debenture and regardless
of the number of instruments which may be issued to evidence such Debenture.

     "Permitted Indebtedness" shall mean the Indebtedness existing on the
Original Issue Date and set forth on Schedule 3.1(gg) attached to the Purchase
Agreement.

     "Permitted Lien" shall mean the individual and collective reference to the
following: (a) Liens for taxes, assessments and other governmental charges or
levies not yet due or Liens for taxes, assessments and other governmental
charges or levies being contested in good faith and by appropriate proceedings
for which adequate reserves (in the good faith judgment of the management of the
Company) have been established in accordance with GAAP and (b) Liens imposed by
law which were incurred in the ordinary course of business, such as carriers',
warehousemen's and mechanics' Liens, statutory landlords' Liens, and other
similar Liens arising in the ordinary course of business, and (x) which do not
individually or in the aggregate materially detract from the value of such
property or assets or materially impair the use thereof in the operation of the
business of the Company and its consolidated Subsidiaries or (y) which are being
contested in good faith by appropriate proceedings, which proceedings have the
effect of preventing the forfeiture or sale of the property or asset subject to
such Lien.
                                       4

     "Person" means a corporation, an association, a partnership, organization,
a business, an individual, a government or political subdivision thereof or a
governmental agency.

     "Purchase Agreement" means the Securities Purchase Agreement, dated as of
January ____, 2006, to which the Company and the original Holder are parties, as
amended, modified or supplemented from time to time in accordance with its
terms.

     "Registration Rights Agreement" means the Registration Rights Agreement,
dated as of the date of the Purchase Agreement, to which the Company and the
original Holder are parties, as amended, modified or supplemented from time to
time in accordance with its terms.

     "Registration Statement" means a registration statement meeting the
requirements set forth in the Registration Rights Agreement, covering among
other things the resale of the Conversion Shares and naming the Holder as a
"selling stockholder" thereunder.

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

     "Subsidiary" shall have the meaning given to such term in the Purchase
Agreement.

     "Trading Day" means a day on which the Common Stock is traded on a Trading
Market.

     "Trading Market" means the following markets or exchanges on which the
Common Stock is listed or quoted for trading on the date in question: the Nasdaq
Capital Market, the American Stock Exchange, the New York Stock Exchange, the
Nasdaq National Market or the OTC Bulletin Board.

     "Transaction Documents" shall have the meaning set forth in the Purchase
Agreement.

     "VWAP" means, for any date, the price determined by the first of the
following clauses that applies: (a) if the Common Stock is then listed or quoted
on a Trading Market, the daily volume weighted average price of the Common Stock
for such date (or the nearest preceding date) on the Trading Market on which the
Common Stock is then listed or quoted as reported by Bloomberg Financial L.P.
(based on a Trading Day from 9:30 a.m. Eastern Time to 4:02 p.m. Eastern Time);
(b) if the Common Stock is not then listed or quoted on a Trading Market and if
prices for the Common Stock are then reported in the "Pink Sheets" published by
the Pink Sheets, LLC (or a similar organization or agency succeeding to its
functions of reporting prices), the most recent bid price per share of the
Common Stock so reported; or (c) in all other cases, the fair market value of a
share of Common Stock as determined by an independent appraiser selected in good
faith by the Holder and reasonably acceptable to the Company.

                                       5


Section 2.    Interest.
- ----------    ---------

     a) Payment of Interest. The Company shall pay interest to the Holder on the
aggregate unconverted and then outstanding principal amount of this Debenture at
the rate of 8% per annum, payable on each Optional Redemption Date (as to that
principal amount being redeemed) and on the Maturity Date (except that, if any
such date is not a Business Day, then such payment shall be due on the next
succeeding Business Day) (each such date, an "Interest Payment Date"), in cash.

     b) Interest Calculations. Interest shall be calculated on the basis of a
360-day year and shall accrue daily commencing on the Original Issue Date until
payment in full of the principal sum, together with all accrued and unpaid
interest and other amounts which may become due hereunder, has been made.
Interest shall cease to accrue with respect to any principal amount converted,
provided that the Company in fact delivers the Conversion Shares within the time
period required by Section 4(d)(ii). Interest hereunder will be paid to the
Person in whose name this Debenture is registered on the records of the Company
regarding registration and transfers of this Debenture (the "Debenture
Register").

     c) Late Fee. All overdue accrued and unpaid interest to be paid hereunder
shall entail a late fee at the rate of 18% per annum (or such lower maximum
amount of interest permitted to be charged under applicable law) ("Late Fees")
which will accrue daily, from the date such interest is due hereunder through
and including the date of payment.

     d) Prepayment. Except as otherwise set forth in this Debenture, the Company
may not prepay any portion of the principal amount of this Debenture without the
prior written consent of the Holder.

Section 3.     Registration of Transfers and Exchanges.
- ----------     ----------------------------------------

     a) Different Denominations. This Debenture is exchangeable for an equal
aggregate principal amount of Debentures of different authorized denominations,
as requested by the Holder surrendering the same. No service charge will be made
for such registration of transfer or exchange.

     b) Investment Representations. This Debenture has been issued subject to
certain investment representations of the original Holder set forth in the
Purchase Agreement and may be transferred or exchanged only in compliance with
the Purchase Agreement and applicable federal and state securities laws and
regulations.


                                       6

     c) Reliance on Debenture Register. Prior to due presentment to the Company
for transfer of this Debenture, the Company and any agent of the Company may
treat the Person in whose name this Debenture is duly registered on the
Debenture Register as the owner hereof for the purpose of receiving payment as
herein provided and for all other purposes, whether or not this Debenture is
overdue, and neither the Company nor any such agent shall be affected by notice
to the contrary.

Section 4.          Conversion.
- ----------          ----------

     a) Voluntary Conversion. At any time after the Original Issue Date until
this Debenture is no longer outstanding, this Debenture shall be convertible
into shares of Common Stock at the option of the Holder, in whole or in part at
any time and from time to time (subject to the limitations on conversion set
forth in Section 4(c) hereof). The Holder shall effect conversions by delivering
to the Company the form of Notice of Conversion attached hereto as Annex A (a
"Notice of Conversion"), specifying therein the principal amount of this
Debenture to be converted and the date on which such conversion is to be
effected (a "Conversion Date"). If no Conversion Date is specified in a Notice
of Conversion, the Conversion Date shall be the date that such Notice of
Conversion is provided hereunder. To effect conversions hereunder, the Holder
shall not be required to physically surrender this Debenture to the Company
unless the entire principal amount of this Debenture plus all accrued and unpaid
interest thereon has been so converted. Conversions hereunder shall have the
effect of lowering the outstanding principal amount of this Debenture in an
amount equal to the applicable conversion. The Holder and the Company shall
maintain records showing the principal amount converted and the date of such
conversions. The Company shall deliver any objection to any Notice of Conversion
within 1 Business Day of receipt of such notice. In the event of any dispute or
discrepancy, the records of the Holder shall be controlling and determinative in
the absence of manifest error. The Holder and any assignee, by acceptance of
this Debenture, acknowledge and agree that, by reason of the provisions of this
paragraph, following conversion of a portion of this Debenture, the unpaid and
unconverted principal amount of this Debenture may be less than the amount
stated on the face hereof.

     b) Conversion Price. The conversion price in effect on any Conversion Date
shall be equal to the lesser of (i) $1.00 (subject to adjustment herein) (the
"Set Price") or (ii) 75% of the average of the 5 consecutive Closing Prices
immediately prior to the applicable Conversion Date (subject to adjustment for
forward and reverse stock splits, stock dividends, recapitalizations and the
like) (the "Floor Price") (such lower price, the "Conversion Price").
Notwithstanding anything herein to the contrary, the Floor Price calculated
pursuant to Section 4(b)(ii) shall not be less than $0.50 (subject to adjustment
for forward and reverse stock splits, stock dividends, recapitalizations and the
like). For clarification, if the Set Price is reduced pursuant to Section 5(b)
to $0.40 due to a Dilutive Issuance, and 75% of the average of the 5 consecutive
Closing Prices immediately prior to the applicable Conversion Date is equal to
$0.50, the Conversion Price for such Conversion Date would equal $0.40.


                                       7

     c) Conversion Limitations. The Company shall not effect any conversion of
this Debenture, and a Holder shall not have the right to convert any portion of
this Debenture to the extent that after giving effect to such conversion, such
Holder (together with such Holder's affiliates, and any other person or entity
acting as a group together with such Holder or any of such Holder's affiliates),
as set forth on the applicable Notice of Conversion, would beneficially own in
excess of the Beneficial Ownership Limitation (as defined below). For purposes
of the foregoing sentence, the number of shares of Common Stock beneficially
owned by such Holder and its affiliates shall include the number of shares of
Common Stock issuable upon conversion of this Debenture with respect to which
the determination of such sentence is being made, but shall exclude the number
of shares of Common Stock which would be issuable upon (A) conversion of the
remaining, nonconverted principal amount of this Debenture beneficially owned by
such Holder or any of its affiliates and (B) exercise or conversion of the
unexercised or nonconverted portion of any other securities of the Company
(including, without limitation, any other Debentures or the Warrants) subject to
a limitation on conversion or exercise analogous to the limitation contained
herein beneficially owned by such Holder or any of its affiliates. Except as set
forth in the preceding sentence, for purposes of this Section 4(c), beneficial
ownership shall be calculated in accordance with Section 13(d) of the Exchange
Act and the rules and regulations promulgated thereunder. To the extent that the
limitation contained in this Section 4(c) applies, the determination of whether
this Debenture is convertible (in relation to other securities owned by such
Holder together with any affiliates) and of which amounts of this Debenture are
convertible shall be in the sole discretion of such Holder, and the submission
of a Notice of Conversion shall be deemed to be such Holder's determination of
whether this Debenture may be converted (in relation to other securities owned
by such Holder) and which amounts of this Debenture are convertible, in each
case subject to such aggregate percentage limitations. To ensure compliance with
this restriction, each Holder will be deemed to represent to the Company each
time it delivers a Notice of Conversion that such Notice of Conversion has not
violated the restrictions set forth in this paragraph and the Company shall have
no obligation to verify or confirm the accuracy of such determination. In
addition, a determination as to any group status as contemplated above shall be
determined in accordance with Section 13(d) of the Exchange Act and the rules
and regulations promulgated thereunder. For purposes of this Section 4(c), in
determining the number of outstanding shares of Common Stock, a Holder may rely
on the number of outstanding shares of Common Stock as reflected in the most
recent of the following: (A) the Company's most recent Form 10-QSB or Form
10-KSB, as the case may be, (B) a more recent public announcement by the Company
or (C) any other notice by the Company or the Company's transfer agent setting
forth the number of shares of Common Stock outstanding. Upon the written or oral
request of a Holder, the Company shall within two Trading Days confirm orally
and in writing to such Holder the number of shares of Common Stock then
outstanding. In any case, the number of outstanding shares of Common Stock shall
be determined after giving effect to the conversion or exercise of securities of
the Company, including this Debenture, by such Holder or its affiliates since
the date as of which such number of outstanding shares of Common Stock was
reported. The "Beneficial Ownership Limitation" shall be 4.99% of the number of
shares of the Common Stock outstanding immediately after giving effect to the
issuance of shares of Common Stock issuable upon conversion of this Debenture
held by the Holder. The Beneficial Ownership Limitation provisions of this
Section 4(c) may be waived by such Holder, at the election of such Holder, upon
not less than 61 days' prior notice to the Company to change the Beneficial
Ownership Limitation to 9.99% of the number of shares of the Common Stock
outstanding immediately after giving effect to the issuance of shares of Common
Stock upon conversion of this Debenture held by the Holder, and the provisions
of this Section 4(c) shall continue to apply. Upon such a change by a Holder of
the Beneficial Ownership Limitation from such 4.99% limitation to such 9.99%
limitation, the Beneficial Ownership Limitation may not be waived by such
Holder. The provisions of this paragraph shall be implemented in a manner
otherwise than in strict conformity with the terms of this Section 4(c) to
correct this paragraph (or any portion hereof) which may be defective or
inconsistent with the intended Beneficial Ownership Limitation herein contained
or to make changes or supplements necessary or desirable to properly give effect
to such limitation. The limitations contained in this paragraph shall apply to a
successor holder of this Debenture.


                                       8

     d) Mechanics of Conversion

          i. Conversion Shares Issuable Upon Conversion of Principal Amount. The
     number of shares of Common Stock issuable upon a conversion hereunder shall
     be determined by the quotient obtained by dividing (x) the outstanding
     principal amount of this Debenture to be converted by (y) the Conversion
     Price. i.

          ii. Delivery of Certificate Upon Conversion. Not later than three
     Trading Days after any Conversion Date, the Company will deliver or cause
     to be delivered to the Holder (A) a certificate or certificates
     representing the Conversion Shares which shall be free of restrictive
     legends and trading restrictions (other than those required by the Purchase
     Agreement) representing the number of shares of Common Stock being acquired
     upon the conversion of this Debenture and (B) a bank check in the amount of
     accrued and unpaid interest. The Company shall, if available and if allowed
     under applicable securities laws, use its best efforts to deliver any
     certificate or certificates required to be delivered by the Company under
     this Section electronically through the Depository Trust Corporation or
     another established clearing corporation performing similar functions.

          iii. Failure to Deliver Certificates. If in the case of any Notice of
     Conversion such certificate or certificates are not delivered to or as
     directed by the applicable Holder by the third Trading Day after a
     Conversion Date, the Holder shall be entitled by written notice to the
     Company at any time on or before its receipt of such certificate or
     certificates thereafter, to rescind such conversion, in which event the
     Company shall immediately return the certificates representing the
     principal amount of this Debenture tendered for conversion.


                                       9

          iv. Obligation Absolute; Partial Liquidated Damages. If the Company
     fails for any reason to deliver to the Holder such certificate or
     certificates pursuant to Section 4(d)(ii) by the third Trading Day after
     the Conversion Date, the Company shall pay to such Holder, in cash, as
     liquidated damages and not as a penalty, for each $1000 of principal amount
     being converted, $10 per Trading Day (increasing to $20 per Trading Day
     after 5 Trading Days after such damages begin to accrue) for each Trading
     Day after such third Trading Day until such certificates are delivered. The
     Company's obligations to issue and deliver the Conversion Shares upon
     conversion of this Debenture in accordance with the terms hereof are
     absolute and unconditional, irrespective of any action or inaction by the
     Holder to enforce the same, any waiver or consent with respect to any
     provision hereof, the recovery of any judgment against any Person or any
     action to enforce the same, or any setoff, counterclaim, recoupment,
     limitation or termination, or any breach or alleged breach by the Holder or
     any other Person of any obligation to the Company or any violation or
     alleged violation of law by the Holder or any other person, and
     irrespective of any other circumstance which might otherwise limit such
     obligation of the Company to the Holder in connection with the issuance of
     such Conversion Shares; provided, however, such delivery shall not operate
     as a waiver by the Company of any such action the Company may have against
     the Holder. In the event the Holder of this Debenture shall elect to
     convert any or all of the outstanding principal amount hereof, the Company
     may not refuse conversion based on any claim that the Holder or any one
     associated or affiliated with the Holder has been engaged in any violation
     of law, agreement or for any other reason, unless, an injunction from a
     court, on notice, restraining and or enjoining conversion of all or part of
     this Debenture shall have been sought and obtained and the Company posts a
     surety bond for the benefit of the Holder in the amount of 150% of the
     principal amount of this Debenture outstanding, which is subject to the
     injunction, which bond shall remain in effect until the completion of
     arbitration/litigation of the dispute and the proceeds of which shall be
     payable to such Holder to the extent it obtains judgment. In the absence of
     an injunction precluding the same, the Company shall issue Conversion
     Shares or, if applicable, cash, upon a properly noticed conversion. Nothing
     herein shall limit a Holder's right to pursue actual damages or declare an
     Event of Default pursuant to Section 8 herein for the Company's failure to
     deliver Conversion Shares within the period specified herein and such
     Holder shall have the right to pursue all remedies available to it at law
     or in equity including, without limitation, a decree of specific
     performance and/or injunctive relief. The exercise of any such rights shall
     not prohibit the Holder from seeking to enforce damages pursuant to any
     other Section hereof or under applicable law.

                                       10

          v. Compensation for Buy-In on Failure to Timely Deliver Certificates
     Upon Conversion. In addition to any other rights available to the Holder,
     if the Company fails for any reason to deliver to the Holder such
     certificate or certificates pursuant to Section 4(d)(ii) by the fifth
     Trading Day after the Conversion Date, and if after such fifth Trading Day
     the Holder is required by its brokerage firm to purchase (in an open market
     transaction or otherwise) Common Stock to deliver in satisfaction of a sale
     by such Holder of the Conversion Shares which the Holder anticipated
     receiving upon such conversion (a "Buy-In"), then the Company shall (A) pay
     in cash to the Holder (in addition to any remedies available to or elected
     by the Holder) the amount by which (x) the Holder's total purchase price
     (including brokerage commissions, if any) for the Common Stock so purchased
     exceeds (y) the product of (1) the aggregate number of shares of Common
     Stock that such Holder anticipated receiving from the conversion at issue
     multiplied by (2) the actual sale price of the Common Stock at the time of
     the sale (including brokerage commissions, if any) giving rise to such
     purchase obligation and (B) at the option of the Holder, either reissue (if
     surrendered) this Debenture in a principal amount equal to the principal
     amount of the attempted conversion or deliver to the Holder the number of
     shares of Common Stock that would have been issued had the Company timely
     complied with its delivery requirements under Section 4(d)(ii). For
     example, if the Holder purchases Common Stock having a total purchase price
     of $11,000 to cover a Buy-In with respect to an attempted conversion of
     this Debenture with respect to which the actual sale price of the
     Conversion Shares at the time of the sale (including brokerage commissions,
     if any) giving rise to such purchase obligation was a total of $10,000
     under clause (A) of the immediately preceding sentence, the Company shall
     be required to pay the Holder $1,000. The Holder shall provide the Company
     written notice indicating the amounts payable to the Holder in respect of
     the Buy-In.

          vi. Reservation of Shares Issuable Upon Conversion. The Company
     covenants that it will at all times reserve and keep available out of its
     authorized and unissued shares of Common Stock solely for the purpose of
     issuance upon conversion of this Debenture, free from preemptive rights or
     any other actual contingent purchase rights of persons other than the
     Holder (and the other holders of the Debentures), not less than such number
     of shares of the Common Stock as shall (subject to the terms and conditions
     set forth in the Purchase Agreement) be issuable (taking into account the
     adjustments and restrictions of Section 5) upon the conversion of the
     outstanding principal amount of this Debenture. The Company covenants that
     all shares of Common Stock that shall be so issuable shall, upon issue, be
     duly and validly authorized, issued and fully paid, nonassessable and, if
     the Registration Statement is then effective under the Securities Act,
     registered for public sale in accordance with such Registration Statement.

          vii. Fractional Shares. Upon a conversion hereunder the Company shall
     not be required to issue stock certificates representing fractions of
     shares of the Common Stock, but may if otherwise permitted, make a cash
     payment in respect of any final fraction of a share based on the VWAP at
     such time. If the Company elects not, or is unable, to make such a cash
     payment, the Holder shall be entitled to receive, in lieu of the final
     fraction of a share, one whole share of Common Stock.


                                       11

          viii. Transfer Taxes. The issuance of certificates for shares of the
     Common Stock on conversion of this Debenture shall be made without charge
     to the Holder hereof for any documentary stamp or similar taxes that may be
     payable in respect of the issue or delivery of such certificate, provided
     that the Company shall not be required to pay any tax that may be payable
     in respect of any transfer involved in the issuance and delivery of any
     such certificate upon conversion in a name other than that of the Holder of
     this Debenture so converted and the Company shall not be required to issue
     or deliver such certificates unless or until the person or persons
     requesting the issuance thereof shall have paid to the Company the amount
     of such tax or shall have established to the satisfaction of the Company
     that such tax has been paid.

Section 5.        Certain Adjustments.
- ----------        --------------------

     a) Stock Dividends and Stock Splits. If the Company, at any time while this
Debenture is outstanding: (A) pays a stock dividend or otherwise makes a
distribution or distributions on shares of its Common Stock or any other equity
or equity equivalent securities payable in shares of Common Stock (which, for
avoidance of doubt, shall not include any shares of Common Stock issued by the
Company pursuant to this Debenture), (B) subdivides outstanding shares of Common
Stock into a larger number of shares, (C) combines (including by way of reverse
stock split) outstanding shares of Common Stock into a smaller number of shares,
or (D) issues by reclassification of shares of the Common Stock any shares of
capital stock of the Company, then the Set Price shall be multiplied by a
fraction of which the numerator shall be the number of shares of Common Stock
(excluding treasury shares, if any) outstanding immediately before such event
and of which the denominator shall be the number of shares of Common Stock
outstanding immediately after such event. Any adjustment made pursuant to this
Section shall become effective immediately after the record date for the
determination of stockholders entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a
subdivision, combination or re-classification.


                                       12

     b) Subsequent Equity Sales. If the Company or any Subsidiary thereof, as
applicable, at any time while this Debenture is outstanding, shall offer, sell,
grant any option to purchase or offer, sell or grant any right to reprice its
securities, or otherwise dispose of or issue (or announce any offer, sale, grant
or any option to purchase or other disposition) any Common Stock or Common Stock
Equivalents entitling any Person to acquire shares of Common Stock, at an
effective price per share less than the then Set Price (such lower price, the
"Base Conversion Price" and such issuances collectively, a "Dilutive Issuance"),
as adjusted hereunder (if the holder of the Common Stock or Common Stock
Equivalents so issued shall at any time, whether by operation of purchase price
adjustments, reset provisions, floating conversion, exercise or exchange prices
or otherwise, or due to warrants, options or rights per share which is issued in
connection with such issuance, be entitled to receive shares of Common Stock at
an effective price per share which is less than the Set Price, such issuance
shall be deemed to have occurred for less than the Set Price on such date of the
Dilutive Issuance), then the Set Price shall be reduced to equal the Base
Conversion Price. Such adjustment shall be made whenever such Common Stock or
Common Stock Equivalents are issued. Notwithstanding the foregoing, no
adjustment will be made under this Section 5(b) in respect of an Exempt
Issuance. The Company shall notify the Holder in writing, no later than the
Business Day following the issuance of any Common Stock or Common Stock
Equivalents subject to this section, indicating therein the applicable issuance
price, or of applicable reset price, exchange price, conversion price and other
pricing terms (such notice the "Dilutive Issuance Notice"). For purposes of
clarification, whether or not the Company provides a Dilutive Issuance Notice
pursuant to this Section 5(b), upon the occurrence of any Dilutive Issuance,
after the date of such Dilutive Issuance the Holder is entitled to receive a
number of Conversion Shares based upon the Base Conversion Price regardless of
whether the Holder accurately refers to the Base Conversion Price in the Notice
of Conversion.

     c) Pro Rata Distributions. If the Company, at any time while this Debenture
is outstanding, shall distribute to all holders of Common Stock (and not to the
holders of the Debenture) evidences of its indebtedness or assets (including
cash and cash dividends) or rights or warrants to subscribe for or purchase any
security, then in each such case the Set Price shall be adjusted by multiplying
such Set Price in effect immediately prior to the record date fixed for
determination of stockholders entitled to receive such distribution by a
fraction of which the denominator shall be the VWAP determined as of the record
date mentioned above, and of which the numerator shall be such VWAP on such
record date less the then fair market value at such record date of the portion
of such assets or evidence of indebtedness so distributed applicable to one
outstanding share of the Common Stock as determined by the Board of Directors in
good faith. In either case the adjustments shall be described in a statement
provided to the Holder of the portion of assets or evidences of indebtedness so
distributed or such subscription rights applicable to one share of Common Stock.
Such adjustment shall be made whenever any such distribution is made and shall
become effective immediately after the record date mentioned above.


                                       13

     d) Fundamental Transaction. If, at any time while this Debenture is
outstanding, (A) the Company effects any merger or consolidation of the Company
with or into another Person, (B) the Company effects any sale of all or
substantially all of its assets in one or a series of related transactions, (C)
any tender offer or exchange offer (whether by the Company or another Person) is
completed pursuant to which holders of Common Stock are permitted to tender or
exchange their shares for other securities, cash or property, or (D) the Company
effects any reclassification of the Common Stock or any compulsory share
exchange pursuant to which the Common Stock is effectively converted into or
exchanged for other securities, cash or property (in any such case, a
"Fundamental Transaction"), then upon any subsequent conversion of this
Debenture, the Holder shall have the right to receive, for each Conversion Share
that would have been issuable upon such conversion immediately prior to the
occurrence of such Fundamental Transaction, the same kind and amount of
securities, cash or property as it would have been entitled to receive upon the
occurrence of such Fundamental Transaction if it had been, immediately prior to
such Fundamental Transaction, the holder of one share of Common Stock (the
"Alternate Consideration"). For purposes of any such conversion, the
determination of the Set Price shall be appropriately adjusted to apply to such
Alternate Consideration based on the amount of Alternate Consideration issuable
in respect of one share of Common Stock in such Fundamental Transaction, and the
Company shall apportion the Set Price among the Alternate Consideration in a
reasonable manner reflecting the relative value of any different components of
the Alternate Consideration. If holders of Common Stock are given any choice as
to the securities, cash or property to be received in a Fundamental Transaction,
then the Holder shall be given the same choice as to the Alternate Consideration
it receives upon any conversion of this Debenture following such Fundamental
Transaction. To the extent necessary to effectuate the foregoing provisions, any
successor to the Company or surviving entity in such Fundamental Transaction
shall issue to the Holder a new debenture consistent with the foregoing
provisions and evidencing the Holder's right to convert such debenture into
Alternate Consideration. The terms of any agreement pursuant to which a
Fundamental Transaction is effected shall include terms requiring any such
successor or surviving entity to comply with the provisions of this paragraph
(d) and insuring that this Debenture (or any such replacement security) will be
similarly adjusted upon any subsequent transaction analogous to a Fundamental
Transaction.

     e) Calculations. All calculations under this Section 5 shall be made to the
nearest cent or the nearest 1/100th of a share, as the case may be. For purposes
of this Section 5, the number of shares of Common Stock deemed to be issued and
outstanding as of a given date shall be the sum of the number of shares of
Common Stock (excluding treasury shares, if any) issued and outstanding.

     f) Notice to the Holder.

          i. Adjustment to Set Price. Whenever the Set Price is adjusted
     pursuant to any of this Section 5, the Company shall promptly mail to each
     Holder a notice setting forth the Set Price after such adjustment and
     setting forth a brief statement of the facts requiring such adjustment. If
     the Company issues a variable rate security, despite the prohibition
     thereon in the Purchase Agreement, the Company shall be deemed to have
     issued Common Stock or Common Stock Equivalents at the lowest possible
     conversion or exercise price at which such securities may be converted or
     exercised in the case of a Variable Rate Transaction (as defined in the
     Purchase Agreement).

                                       14

          ii. Notice to Allow Conversion by Holder. If (A) the Company shall
     declare a dividend (or any other distribution) on the Common Stock; (B) the
     Company shall declare a special nonrecurring cash dividend on or a
     redemption of the Common Stock; (C) the Company shall authorize the
     granting to all holders of the Common Stock rights or warrants to subscribe
     for or purchase any shares of capital stock of any class or of any rights;
     (D) the approval of any stockholders of the Company shall be required in
     connection with any reclassification of the Common Stock, any consolidation
     or merger to which the Company is a party, any sale or transfer of all or
     substantially all of the assets of the Company, of any compulsory share
     exchange whereby the Common Stock is converted into other securities, cash
     or property; (E) the Company shall authorize the voluntary or involuntary
     dissolution, liquidation or winding up of the affairs of the Company; then,
     in each case, the Company shall cause to be filed at each office or agency
     maintained for the purpose of conversion of this Debenture, and shall cause
     to be mailed to the Holder at its last addresses as it shall appear upon
     the stock books of the Company, at least 20 calendar days prior to the
     applicable record or effective date hereinafter specified, a notice stating
     (x) the date on which a record is to be taken for the purpose of such
     dividend, distribution, redemption, rights or warrants, or if a record is
     not to be taken, the date as of which the holders of the Common Stock of
     record to be entitled to such dividend, distributions, redemption, rights
     or warrants are to be determined or (y) the date on which such
     reclassification, consolidation, merger, sale, transfer or share exchange
     is expected to become effective or close, and the date as of which it is
     expected that holders of the Common Stock of record shall be entitled to
     exchange their shares of the Common Stock for securities, cash or other
     property deliverable upon such reclassification, consolidation, merger,
     sale, transfer or share exchange; provided, that the failure to mail such
     notice or any defect therein or in the mailing thereof shall not affect the
     validity of the corporate action required to be specified in such notice.
     The Holder is entitled to convert this Debenture during the 20-day period
     commencing the date of such notice to the effective date of the event
     triggering such notice.

Section 6.        Redemption.
- ---------         ----------

          a) Optional Redemption at Election of Company. Subject to the
     provisions of this Section 6, at any time after the Effective Date, the
     Company may deliver a notice to the Holder (an "Optional Redemption Notice"
     and the date such notice is deemed delivered hereunder, the "Optional
     Redemption Notice Date") of its irrevocable election to redeem some or all
     of the then outstanding Debentures, for an amount, in cash, equal to the
     Optional Redemption Amount on the 20th Trading Day following the Optional
     Redemption Notice Date (such date, the "Optional Redemption Date" and such
     redemption, the "Optional Redemption"). The Optional Redemption Amount is
     due in full on the Optional Redemption Date. The Company may only effect an
     Optional Redemption if during the period commencing on the Optional
     Redemption Notice Date through to the Optional Redemption Date and through
     and including the date such shares of Common Stock are issued to the
     Holder, each of the Equity Conditions shall have been met. If any of the
     Equity Conditions shall cease to be satisfied at any time during the
     required period, then the Holder may elect to nullify the Optional
     Redemption Notice by notice to the Company within 3 Trading Days after the
     first day on which any such Equity Condition has not been met (provided
     that if, by a provision of the Transaction Documents, the Company is
     obligated to notify the Holder of the non-existence of an Equity Condition,
     such notice period shall be extended to the third Trading Day after proper
     notice from the Company) in which case the Optional Redemption Notice shall
     be null and void, ab initio. The Company covenants and agrees that it will
     honor all Notices of Conversion tendered from the time of delivery of the
     Optional Redemption Notice through the date all amounts owing thereon are
     due and paid in full.

                                       15

          b) Redemption Procedure. The payment of cash pursuant to an Optional
     Redemption shall be made on the Optional Redemption Date. If any portion of
     the cash payment for an Optional Redemption shall not be paid by the
     Company by the respective due date, interest shall accrue thereon at the
     rate of 18% per annum (or the maximum rate permitted by applicable law,
     whichever is less) until the payment of the Optional Redemption Amount,
     plus all amounts owing thereon is paid in full. Alternatively, if any
     portion of the Optional Redemption Amount remains unpaid after such date,
     the Holders subject to such redemption may elect, by written notice to the
     Company given at any time thereafter, to invalidate ab initio such
     redemption, notwithstanding anything herein contained to the contrary, and,
     with respect the failure to honor the Optional Redemption as applicable,
     the Company shall have no further right to exercise such Optional
     Redemption. Notwithstanding anything to the contrary in this Section 6, the
     Company's determination to redeem in cash or its elections under Section
     6(b) shall be applied among the Holders of Debentures ratably. The Holder
     may elect to convert the outstanding principal amount of the Debenture
     pursuant to Section 4 prior to actual payment in cash for any redemption
     under this Section 6 by fax delivery of a Notice of Conversion to the
     Company.


     Section 7. Negative Covenants. So long as any portion of this Debenture is
outstanding, the Company will not and will not permit any of its Subsidiaries to
directly or indirectly:

          a) other than Permitted Indebtedness, enter into, create, incur,
     assume, guarantee or suffer to exist any indebtedness for borrowed money of
     any kind, including but not limited to, a guarantee, on or with respect to
     any of its property or assets now owned or hereafter acquired or any
     interest therein or any income or profits therefrom;

          b) other than Permitted Liens, enter into, create, incur, assume or
     suffer to exist any liens of any kind, on or with respect to any of its
     property or assets now owned or hereafter acquired or any interest therein
     or any income or profits therefrom;

          c) amend its certificate of incorporation, bylaws or other charter
     documents so as to materially and adversely affect any rights of the
     Holder;


                                       16

          d) repay, repurchase or offer to repay, repurchase or otherwise
     acquire more than a de minimis number of shares of its Common Stock or
     Common Stock Equivalents other than as to the Conversion Shares to the
     extent permitted or required under the Transaction Documents or as
     otherwise permitted by the Transaction Documents;

          e) enter into any agreement with respect to any of the foregoing; or

          f) pay cash dividends or distributions on any equity securities of the
     Company.

Section 8.        Events of Default.
- ---------         -----------------

          a) "Event of Default", wherever used herein, means any one of the
     following events (whatever the reason and whether it shall be voluntary or
     involuntary or effected by operation of law or pursuant to any judgment,
     decree or order of any court, or any order, rule or regulation of any
     administrative or governmental body):

               i. any default in the payment of (A) the principal amount of any
          Debenture, or (B) interest (including Late Fees) on, or liquidated
          damages in respect of, any Debenture, as and when the same shall
          become due and payable (whether on a Conversion Date or the Maturity
          Date or by acceleration or otherwise) which default, solely in the
          case of an interest payment or other default under clause (B) above,
          is not cured, within 3 Trading Days;

               ii. the Company shall fail to observe or perform any other
          covenant or agreement contained in this Debenture or any other
          Debenture (other than a breach by the Company of its obligations to
          deliver shares of Common Stock to the Holder upon conversion which
          breach is addressed in clause (xi) below) which failure is not cured,
          if possible to cure, within the earlier to occur of (A) 5 Trading Days
          after notice of such default sent by the Holder or by any other Holder
          and (B)10 Trading Days after the Company shall become or should have
          become aware of such failure;

               iii. a default or event of default (subject to any grace or cure
          period provided for in the applicable agreement, document or
          instrument) shall occur under (A) any of the Transaction Documents, or
          (B) any other material agreement, lease, document or instrument to
          which the Company or any Subsidiary is bound;

               iv. any representation or warranty made herein, in any other
          Transaction Documents, in any written statement pursuant hereto or
          thereto, or in any other report, financial statement or certificate
          made or delivered to the Holder or any other holder of Debentures
          shall be untrue or incorrect in any material respect as of the date
          when made or deemed made;


                                       17

               v. (i) the Company or any of its Subsidiaries shall commence a
          case, as debtor, a case under any applicable bankruptcy or insolvency
          laws as now or hereafter in effect or any successor thereto, or the
          Company or any Subsidiary commences any other proceeding under any
          reorganization, arrangement, adjustment of debt, relief of debtors,
          dissolution, insolvency or liquidation or similar law of any
          jurisdiction whether now or hereafter in effect relating to the
          Company or any Subsidiary thereof or (ii) there is commenced a case
          against the Company or any Subsidiary thereof, under any applicable
          bankruptcy or insolvency laws, as now or hereafter in effect or any
          successor thereto which remains undismissed for a period of 60 days;
          or (iii) the Company or any Subsidiary thereof is adjudicated by a
          court of competent jurisdiction insolvent or bankrupt; or any order of
          relief or other order approving any such case or proceeding is
          entered; or (iv) the Company or any Subsidiary thereof suffers any
          appointment of any custodian or the like for it or any substantial
          part of its property which continues undischarged or unstayed for a
          period of 60 days; or (v) the Company or any Subsidiary thereof makes
          a general assignment for the benefit of creditors; or (vi) the Company
          shall fail to pay, or shall state that it is unable to pay, or shall
          be unable to pay, its debts generally as they become due; or (vii) the
          Company or any Subsidiary thereof shall call a meeting of its
          creditors with a view to arranging a composition, adjustment or
          restructuring of its debts; or (viii) the Company or any Subsidiary
          thereof shall by any act or failure to act expressly indicate its
          consent to, approval of or acquiescence in any of the foregoing; or
          (ix) any corporate or other action is taken by the Company or any
          Subsidiary thereof for the purpose of effecting any of the foregoing;

               vi. the Company or any Subsidiary shall default in any of its
          obligations under any mortgage, credit agreement or other facility,
          indenture agreement, factoring agreement or other instrument under
          which there may be issued, or by which there may be secured or
          evidenced any indebtedness for borrowed money or money due under any
          long term leasing or factoring arrangement of the Company in an amount
          exceeding $150,000, whether such indebtedness now exists or shall
          hereafter be created and such default shall result in such
          indebtedness becoming or being declared due and payable prior to the
          date on which it would otherwise become due and payable;

               vii. the Common Stock shall not be eligible for quotation on or
          quoted for trading on a Trading Market and shall not again be eligible
          for and quoted or listed for trading thereon within five Trading Days;

               viii. the Company shall be a party to any Change of Control
          Transaction or Fundamental Transaction, shall agree to sell or dispose
          of all or in excess of 33% of its assets in one or more transactions
          (whether or not such sale would constitute a Change of Control
          Transaction) or shall redeem or repurchase more than a de minimis
          number of its outstanding shares of Common Stock or other equity
          securities of the Company (other than redemptions of Conversion Shares
          and repurchases of shares of Common Stock or other equity securities
          of departing officers and directors of the Company; provided such
          repurchases shall not exceed $100,000, in the aggregate, for all
          officers and directors during the term of this Debenture);


                                       18

               ix. a Registration Statement shall not have been declared
          effective by the Commission on or prior to the 210th calendar day
          after the Closing Date;

               x. if, during the Effectiveness Period (as defined in the
          Registration Rights Agreement), the effectiveness of the Registration
          Statement lapses for any reason or the Holder shall not be permitted
          to resell Registrable Securities (as defined in the Registration
          Rights Agreement) under the Registration Statement, in either case,
          for more than 20 consecutive Trading Days or 30 non-consecutive
          Trading Days during any 12 month period; provided, however, that in
          the event that the Company is negotiating a merger, consolidation,
          acquisition or sale of all or substantially all of its assets or a
          similar transaction and in the written opinion of counsel to the
          Company, the Registration Statement, would be required to be amended
          to include information concerning such transactions or the parties
          thereto that is not available or may not be publicly disclosed at the
          time, the Company shall be permitted an additional 10 consecutive
          Trading Days during any 12 month period relating to such an event;

               xi. the Company shall fail for any reason to deliver certificates
          to a Holder prior to the third Trading Day after a Conversion Date
          pursuant to and in accordance with Section 4(d) or the Company shall
          provide notice to the Holder, including by way of public announcement,
          at any time, of its intention not to comply with requests for
          conversions of any Debentures in accordance with the terms hereof; or

               xii. any monetary judgment, writ or similar final process shall
          be entered or filed against the Company, any Subsidiary or any of
          their respective property or other assets for than $50,000, and shall
          remain unvacated, unbonded or unstayed for a period of 45 calendar
          days.




          b) Remedies Upon Event of Default. If any Event of Default occurs, the
     full principal amount of this Debenture, together with interest and other
     amounts owing in respect thereof, to the date of acceleration shall become,
     at the Holder's election, immediately due and payable in cash. The
     aggregate amount payable upon an Event of Default shall be equal to the
     Mandatory Default Amount. Commencing 5 days after the occurrence of any
     Event of Default that results in the eventual acceleration of this
     Debenture, the interest rate on this Debenture shall accrue at the rate of
     18% per annum, or such lower maximum amount of interest permitted to be
     charged under applicable law. Upon the payment in full of the Mandatory
     Default Amount on this entire Debenture the Holder shall promptly surrender
     this Debenture to or as directed by the Company. The Holder need not
     provide and the Company hereby waives any presentment, demand, protest or
     other notice of any kind, and the Holder may immediately and without
     expiration of any grace period enforce any and all of its rights and
     remedies hereunder and all other remedies available to it under applicable
     law. Such declaration may be rescinded and annulled by Holder at any time
     prior to payment hereunder and the Holder shall have all rights as a
     Debenture holder until such time, if any, as the full payment under this
     Section shall have been received by it. No such rescission or annulment
     shall affect any subsequent Event of Default or impair any right consequent
     thereon.

                                       19




Section 9.        Miscellaneous.
- ----------        --------------

     a) Notices. Any and all notices or other communications or deliveries to be
provided by the Holder hereunder, including, without limitation, any Notice of
Conversion, shall be in writing and delivered personally, by facsimile, sent by
a nationally recognized overnight courier service, addressed to the Company, at
the address set forth above, facsimile number ______________, Attn:
______________________________________or such other address or facsimile number
as the Company may specify for such purposes by notice to the Holder delivered
in accordance with this Section. Any and all notices or other communications or
deliveries to be provided by the Company hereunder shall be in writing and
delivered personally, by facsimile, sent by a nationally recognized overnight
courier service addressed to each Holder at the facsimile telephone number or
address of such Holder appearing on the books of the Company, or if no such
facsimile telephone number or address appears, at the principal place of
business of the Holder. Any notice or other communication or deliveries
hereunder 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 5:30 p.m. (New
York City time), (ii) the date after the date of transmission, if such notice or
communication is delivered via facsimile at the facsimile telephone number
specified in this Section later than 5:30 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 second
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.

     b) Absolute Obligation. Except as expressly provided herein, no provision
of this Debenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of, interest and liquidated
damages (if any) on, this Debenture at the time, place, and rate, and in the
coin or currency, herein prescribed. This Debenture is a direct debt obligation
of the Company. This Debenture ranks pari passu with all other Debentures now or
hereafter issued under the terms set forth herein.

     c) Lost or Mutilated Debenture. If this Debenture shall be mutilated, lost,
stolen or destroyed, the Company shall execute and deliver, in exchange and
substitution for and upon cancellation of a mutilated Debenture, or in lieu of
or in substitution for a lost, stolen or destroyed Debenture, a new Debenture
for the principal amount of this Debenture so mutilated, lost, stolen or
destroyed but only upon receipt of evidence of such loss, theft or destruction
of such Debenture, and of the ownership hereof, and indemnity, if requested, all
reasonably satisfactory to the Company.

                                       20

     d) Governing Law. All questions concerning the construction, validity,
enforcement and interpretation of this Debenture 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
agrees that all legal proceedings concerning the interpretations, enforcement
and defense of the transactions contemplated by any of the Transaction Documents
(whether brought against a party hereto or its respective affiliates, directors,
officers, shareholders, employees or agents) shall be commenced in the state and
federal courts sitting in the City of New York, Borough of Manhattan (the "New
York Courts"). Each party hereto hereby irrevocably submits to the exclusive
jurisdiction of the New York Courts for the adjudication of any dispute
hereunder or in connection herewith or with any transaction contemplated hereby
or discussed herein (including with respect to the enforcement of any of the
Transaction Documents), 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, or such New York Courts are improper or
inconvenient venue for such proceeding. 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 via registered or certified
mail or overnight delivery (with evidence of delivery) to such party at the
address in effect for notices to it under this Debenture 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. Each party hereto hereby
irrevocably waives, to the fullest extent permitted by applicable law, any and
all right to trial by jury in any legal proceeding arising out of or relating to
this Debenture or the transactions contemplated hereby. If either party shall
commence an action or proceeding to enforce any provisions of this Debenture,
then the prevailing party in such action or proceeding shall be reimbursed by
the other party for its attorneys fees and other costs and expenses incurred
with the investigation, preparation and prosecution of such action or
proceeding.

     e) Waiver. Any waiver by the Company or the Holder of a breach of any
provision of this Debenture shall not operate as or be construed to be a waiver
of any other breach of such provision or of any breach of any other provision of
this Debenture. The failure of the Company or the Holder to insist upon strict
adherence to any term of this Debenture on one or more occasions shall not be
considered a waiver or deprive that party of the right thereafter to insist upon
strict adherence to that term or any other term of this Debenture. Any waiver
must be in writing.


                                       21

     f) Severability. If any provision of this Debenture is invalid, illegal or
unenforceable, the balance of this Debenture shall remain in effect, and if any
provision is inapplicable to any person or circumstance, it shall nevertheless
remain applicable to all other persons and circumstances. If it shall be found
that any interest or other amount deemed interest due hereunder violates
applicable laws governing usury, the applicable rate of interest due hereunder
shall automatically be lowered to equal the maximum permitted rate of interest.
The Company covenants (to the extent that it may lawfully do so) that it shall
not at any time insist upon, plead, or in any manner whatsoever claim or take
the benefit or advantage of, any stay, extension or usury law or other law which
would prohibit or forgive the Company from paying all or any portion of the
principal of or interest on this Debenture as contemplated herein, wherever
enacted, now or at any time hereafter in force, or which may affect the
covenants or the performance of this indenture, and the Company (to the extent
it may lawfully do so) hereby expressly waives all benefits or advantage of any
such law, and covenants that it will not, by resort to any such law, hinder,
delay or impeded the execution of any power herein granted to the Holder, but
will suffer and permit the execution of every such as though no such law has
been enacted.

     g) Next Business Day. Whenever any payment or other obligation hereunder
shall be due on a day other than a Business Day, such payment shall be made on
the next succeeding Business Day.

     h) Headings. The headings contained herein are for convenience only, do not
constitute a part of this Debenture and shall not be deemed to limit or affect
any of the provisions hereof.

     i) Assumption. Any successor to the Company or surviving entity in a
Fundamental Transaction shall (i) assume in writing all of the obligations of
the Company under this Debenture and the other Transaction Documents pursuant to
written agreements in form and substance satisfactory to the Holder (such
approval not to be unreasonably withheld or delayed) prior to such Fundamental
Transaction and (ii) to issue to the Holder a new debenture of such successor
entity evidenced by a written instrument substantially similar in form and
substance to this Debenture, including, without limitation, having a principal
amount and interest rate equal to the principal amounts and the interest rates
of the Debentures held by the Holder and having similar ranking to this
Debenture, and satisfactory to the Holder (any such approval not to be
unreasonably withheld or delayed). The provisions of this Section 9(i) shall
apply similarly and equally to successive Fundamental Transactions and shall be
applied without regard to any limitations of this Debenture.



                              *********************



                                       22




     IN WITNESS WHEREOF, the Company has caused this Debenture to be duly
executed by a duly authorized officer as of the date first above indicated.


                                          NAVSTAR MEDIA HOLDINGS, INC.


                                          By:__________________________________
                                               Name:
                                               Title:








                                       23




                                     ANNEX A

                              NOTICE OF CONVERSION


         The undersigned hereby elects to convert principal under the 8%
Convertible Debenture of Navstar Media Holdings, Inc., a Nevada corporation (the
"Company"), due on July ___, 2006, into shares of common stock, par value $.001
per share (the "Common Stock"), of the Company according to the conditions
hereof, as of the date written below. If shares are to be issued in the name of
a person other than the undersigned, the undersigned will pay all transfer taxes
payable with respect thereto and is delivering herewith such certificates and
opinions as reasonably requested by the Company in accordance therewith. No fee
will be charged to the holder for any conversion, except for such transfer
taxes, if any.

         By the delivery of this Notice of Conversion the undersigned represents
and warrants to the Company that its ownership of the Common Stock does not
exceed the amounts determined in accordance with Section 13(d) of the Exchange
Act, specified under Section 4 of this Debenture.

         The undersigned agrees to comply with the prospectus delivery
requirements under the applicable securities laws in connection with any
transfer of the aforesaid shares of Common Stock.

Conversion calculations:
                                Date to Effect Conversion:

                                Principal Amount of Debenture to be Converted:


                                Number of shares of Common Stock to
be issued:


                                Signature:

                                Name:

                                Address:





                                       24





                                   Schedule 1

                               CONVERSION SCHEDULE

The 8% Convertible Debentures due on July ___, 2006, in the aggregate principal
amount of $____________ issued by Navstar Media Holdings, Inc. This Conversion
Schedule reflects conversions made under Section 4 of the above referenced
Debenture.

                                     Dated:





                                                           Aggregate Principal
                                                             Amount Remaining
      Date of Conversion                                      Subsequent to
(or for first entry, Original                                   Conversion
         Issue Date)              Amount of Conversion         (or original              Company Attest
                                                            Principal Amount)
- ------------------------------- ------------------------- ----------------------- ---------------------
                                                                         

- ------------------------------- ------------------------- ----------------------- ---------------------


- ------------------------------- ------------------------- ----------------------- ---------------------


- ------------------------------- ------------------------- ----------------------- ---------------------


- ------------------------------- ------------------------- ----------------------- ---------------------






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