Document:

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                                                                     Exhibit 4.1

           NUMBER                                                  SHARES

        COMMON STOCK                                            COMMON STOCK
INCORPORATED UNDER THE LAWS                                    SEE REVERSE FOR
     OF THE STATE OF DELAWARE                                CERTAIN DEFINITIONS

                                                              CUSIP __________

                              GREENGATE CORPORATION

        THIS CERTIFIES that

is the owner of

         FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK, PAR VALUE
                              $.0001 PER SHARE OF

                              GREENGATE CORPORATION

transferable on the books of the Corporation by the holder hereof in person or
by duly authorized attorney upon surrender of this certificate properly
endorsed.

        This certificate is not valid unless countersigned and registered by the
Transfer Agent and Registrar.

        WITNESS the facsimile seal of the Corporation and the facsimile
signatures of its duly authorized officers.

Dated:

-----------------------------------          -----------------------------------
            Secretary                                      President

                                    Corporate
                                      SEAL

                                             Countersigned and Registered

                                             By:
                                                 -------------------------------
                                                 Transfer Agent and Authorized
                                                 Signature

<PAGE>

        The Corporation will furnish without charge to each stockholder who so
requests a statement of the powers, designations, preferences and relative,
participating, optional or other special rights of each class of stock or series
thereof and the qualifications, limitations or restrictions of such preferences
and/or rights.

                              GREENGATE CORPORATION

                            Transfer Fee: As Required

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

        The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                 <C>
TEN COM  -   as tenants in common                   UNIF GIFT MIN ACT-____  Custodian for _______
                                                                     Cust.)              (Minor)
                                                                  under Uniform Gifts to Minors
TEN ENT  -   as tenants by the entireties                         Act of ____________________
                                                                               (State)
JT TEN   -   as joint tenants with right of
             survivorship and not as tenants
             in common
</TABLE>

        Additional abbreviations may also be used though not in the above list.

For value received __________________ hereby sell, assign and transfer unto

                     PLEASE INSERT SOCIAL SECURITY OR OTHER
                         IDENTIFYING NUMBER OF ASSIGNEE

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

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

                Please print or type name and address of assignee

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

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

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

___________________________________________________________ Shares of the Common
Stock represented by the within Certificate and do hereby irrevocably constitute
and appoint
________________________________________________________________________________
Attorney to transfer the said stock on the books of the within-named
Corporation, with full power of substitution in the premises.

Dated                     20
      -------------------   --

SIGNATURE GUARANTEED:                        X
                                              ----------------------------------

                                             X
                                              ----------------------------------

        THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THIS CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER. THE SIGNATURE(S) MUST BE
GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (Banks, Stockbrokers, Savings
and Loan Associations and Credit Unions) WITH MEMBERSHIP IN AN APPROVED
SIGNATURE GUARANTEE MEDALLION PROGRAM.<PAGE>
                                                                     Exhibit 4.2

No. W_________                                              ___________ Warrants

                         CLASS A REDEEMABLE COMMON STOCK
                          PURCHASE WARRANT CERTIFICATE

                              GREENGATE CORPORATION

        This certifies that for value received, _______________ or registered
assigns (the "Registered Owner"), is the owner of _______ Class A redeemable
common stock purchase warrants (the "Warrants"), each of which Warrants entitles
the Registered Owner to purchase during the period commencing __________ and
expiring at 5:00 P.M. Mountain time on ___________, 200_, one fully paid and
non-assessable share of common stock, $.0001 par value per share, of Greengate
Corporation, a Delaware corporation (the "Company"), upon payment of $1.00 per
share (the "Exercise Price"); provided, however, that the number of shares of
the Company's common stock purchasable upon exercise of each Warrant may be
increased or reduced and the Exercise Price adjusted in the event of certain
contingencies provided for in the Warrant Agreement described below. Payment of
the Exercise Price of Warrants represented by this Warrant Certificate shall be
made in lawful money of the United States of America by check or wire transfer
payment payable to the order of the Warrant Agent for the account of the
Company.

        This Warrant Certificate and each Warrant represented hereby are issued
pursuant to and are subject in all respects to the terms and conditions
contained in the Warrant Agreement dated as of __________, 2002 between the
Company and Corporate Stock Transfer, Inc. ("Warrant Agent"). Copies of the
Warrant Agreement are on file at the office of the Warrant Agent.

        In order to exercise these Warrants, the form of election to purchase on
the reverse side must be properly completed and executed. If Warrants
represented by this Warrant Certificate are exercised with respect to fewer than
all shares purchasable, certificates representing Warrants to purchase the
remaining number of shares will be issued. The Company shall not be required to
issue fractions of shares upon the exercise of Warrants.

        Warrants are transferable at the office of the Warrant Agent (or of its
successor as Warrant Agent) by the Registered Owner thereof in person or by
attorney duly authorized in writing, in the manner and subject to the
limitations on transfer set forth in the Warrant Agreement, upon surrender of
the Warrant Certificate and the payment of transfer taxes, if any. Upon any such
transfer, a new Warrant Certificate or new Warrant Certificates of different
denominations, of like tenor and representing in the aggregate the right to
purchase a like number of shares of the Company's common stock, will be issued
to the

<PAGE>

transferee in exchange for this Warrant Certificate, subject to the limitations
set forth in the Warrant Agreement.

        This Warrant Certificate, when surrendered at the office of the Warrant
Agent (or of its successor as Warrant Agent) by the Registered Owner in person
or by attorney duly authorized in writing, may be exchanged for any other
Warrant Certificates of different denominations, of like tenor and representing
in the aggregate the right to purchase a like number of shares, subject to the
limitations provided in the Warrant Agreement.

        If this Warrant Certificate shall be surrendered for exercise within any
period during which the transfer books for the Company's common stock or other
securities purchasable upon the exercise of Warrants are closed for any reason,
the Company shall not be required to make delivery of certificates for the
securities purchasable upon such exercise until the date of the reopening of
said transfer books.

        The Registered Owner shall not be entitled to any of the rights of a
stockholder of the Company prior to exercise hereof.

        Subject to the provisions of the Warrant Agreement, the Warrants may be
redeemed at the option of the Company for a redemption price of $.001 per
Warrant on not less than 30 days' notice, provided that (i) the closing bid
price for the Company's common stock, as reported by the market on which the
common stock trades, has exceeded the Exercise Price by $.50 for any 20
consecutive trading days, and (ii) any notice of the call for redemption is
given not more than 10 business days after the conclusion of such 20 consecutive
trading days. In the event the Company exercises its right to redeem the
Warrants, the Warrants will be exercisable until the close of business on the
date fixed for redemption in such notice. If any Warrant called for redemption
is not exercised by such date, it will cease to be exercisable and the
Registered Owner will be entitled only to the redemption price.

        Prior to due presentment for registration or transfer thereof, the
Company and the Warrant Agent may treat the Registered Owner as the absolute
owner hereof and of each Warrant represented hereby (notwithstanding any
notations of ownership or writing hereon made by anyone other than a duly
authorized officer of the Company or the Warrant Agent) for all purposes and
shall not be affected by any notice to the contrary, except as provided in the
Warrant Agreement.

        This Warrant Certificate is not valid unless countersigned by the
Warrant Agent.

<PAGE>

       IN WITNESS WHEREOF, the Company has caused this Warrant Certificate to
be duly executed, manually or in facsimile, by two of its officers thereunto
duly authorized and a facsimile of its corporate seal to be imprinted hereon.

                                             Greengate Corporation
SEAL

                                             By:
                                                --------------------------------
                                                                  , President
                                                    --------------

                                             By:
                                                --------------------------------
                                                                  , Secretary
                                                    --------------

                                             COUNTERSIGNED:

                                             Corporate Stock Transfer, Inc., as
                                             Warrant Agent

                                             By:
                                                --------------------------------
                                                 Authorized Officer

<PAGE>

                                    EXERCISE

        The undersigned Registered Owner hereby irrevocably elects to exercise
_______ Warrants represented by this Warrant Certificate, and to purchase the
shares of Common Stock of the Company issuable upon the exercise of such
Warrants, and requests that certificates for such shares shall be issued in the
name of:

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

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

-----------------------------------------------
(Please print or type name and address)

and be delivered to:

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

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

-----------------------------------------------
(Please print or type name and address)

Please insert social security
or other identifying number:
                              -------------------------

        and, if such number of Warrants shall not be all of the Warrants
evidenced by the Warrant Certificate, that a new Warrant Certificate for the
balance of such Warrants be registered in the name of and delivered to, the
Registered Owner at the address stated below.

        IMPORTANT: The name of the person exercising this Warrant must
correspond with the name of the Warrantholder written on the face of this
Warrant Certificate in every particular, without alteration or any change
whatever, unless it has been assigned by completing the Assignment form below.

Dated:               , 200
        -------------     -                  -----------------------------------
                                                 Signature of Registered Owner

SIGNATURE GUARANTEE
                                             -----------------------------------
                                             Print name

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

                                             -----------------------------------
                                             Address

<PAGE>

                                   ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto:

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

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

---------------------------------------
(Please print or type name and address)

Please insert social security
or other identifying number:
                              -------------------------

        ____________ of the Warrants represented by this Warrant Certificate,
and hereby irrevocably constitutes and appoints any officer of the Company or
its transfer agent and registrar as lawful Attorney to transfer this Warrant
Certificate on the books of the Company, with full power of substitution in the
premises.

Dated:               , 200
        -------------     -                  -----------------------------------
                                              Signature of Registered Owner

                                             -----------------------------------
                                              Print name

        IMPORTANT: Every registered owner of this Certificate must sign it to
assign or otherwise transfer Warrants. The above signature or signatures must
correspond with the name or names written on the face of this Warrant
Certificate in every particular, without alteration, enlargement or any change
whatever. Each signature should be "medallion" guaranteed by an eligible
guarantor institution (Banks, Stockbrokers, Savings and Loan Associations and
Credit Unions) with membership in an approved signature guarantee Medallion
Program pursuant to Rule 17Ad-15 of the Securities Exchange Act of 1934.

SIGNATURE GUARANTEE:

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