<PAGE>   1
                                                                     EXHIBIT 4.4

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT
AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR ANY STATE
SECURITIES LAWS. SUCH SECURITIES MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE
OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SAID ACT AND ANY APPLICABLE
STATE SECURITIES LAWS.

WARRANT NO.  ___


                        WARRANT TO PURCHASE A MAXIMUM OF
                    ___________ SHARES OF THE COMMON STOCK OF
                       GREYSTONE TECHNOLOGY, INCORPORATED
                           (VOID AFTER ______________)

        This certifies that _____________, or his assigns (the "Holder"), for
value received, is entitled to purchase, pursuant to this Warrant, from
GREYSTONE TECHNOLOGY, INCORPORATED, a California corporation (the "Company"),
having a place of business at 4950 Murphy Canyon Road, San Diego, California,
92123, up to a maximum of ___________ fully paid and nonassessable shares of the
Company's Common Stock (the "Stock") for cash at a price of $_______ per share
(the "Stock Purchase Price") at any time or from time to time up to and
including 5:00 p.m. (Pacific time) on the date that is ________ years from
____________________ (the "Expiration Date") upon surrender to the Company at
its principal office (or at such other location as the Company may advise the
Holder in writing) of this Warrant properly endorsed with the Form of
Subscription attached hereto duly filled in and signed and upon payment in cash
or by check of the aggregate Stock Purchase Price for the number of shares for
which this Warrant is being exercised determined in accordance with the
provisions hereof. The Stock Purchase Price and the number of shares purchasable
hereunder are subject to adjustment as provided in Section 3 of this Warrant.

        This Warrant is subject to the following terms and conditions:

        1. Exercise; Issuance of Certificates; Payment for Shares. This Warrant
shall vest and shall be exercisable at the option of the holder of record hereof
______________________________________. Once subject to purchase, the shares of
the Stock subject to this Options shall remain subject to purchase up to the
Expiration Date for all or any part of the shares of Stock (but not for a
fraction of a share). Seller agrees that the shares of Stock purchased under
this Warrant shall be and are deemed to be issued to the Holder hereof as the
record owner of such shares as of the close of business on the date on which
this Warrant shall have been surrendered, properly endorsed, the completed,
executed Form of Subscription delivered and payment made for such shares.
Certificates for the shares of Stock so purchased, together with any other
securities or property to which the Holder hereof is entitled upon such
exercise, shall be delivered to the Holder hereof by Seller at Seller's expense
within a reasonable time after the rights represented by this Warrant have been
so exercised. In case of a purchase of less than all the shares which may be
purchased under this Warrant, Seller shall cancel this Warrant and execute and
deliver a new Warrant or Warrants of like tenor for the balance of the shares
purchasable under the Warrant surrendered upon such purchase to the Holder
hereof within a reasonable time. Each stock certificate so delivered shall be in
such denominations of Stock as may be requested by the Holder hereof and shall
be registered in the name of such Holder. The minimum number of shares of Stock
which Holder may exercise at any time is 1000 shares.


                                     Page 1
<PAGE>   2

        2. Shares to be Fully Paid; Reservation of Shares. The Company covenants
and agrees that all shares of Stock which may be issued upon the exercise of the
rights represented by this Warrant will, upon issuance, be duly authorized,
validly issued, fully paid and nonassessable and free from all preemptive rights
of any shareholder and free of all taxes, liens and charges with respect to the
issue thereof. The Company further covenants and agrees that during the period
within which the rights represented by this Warrant may be exercised, the
Company will at all times have authorized and reserved, for the purpose of issue
or transfer upon exercise of the subscription rights evidenced by this Warrant,
a sufficient number of shares of authorized but unissued Stock, or other
securities and property, when and as required to provide for the exercise of the
rights represented by this Warrant. The Company will take all such action as may
be necessary to assure that such shares of Stock may be issued as provided
herein without violation of any applicable law or regulation, or of any
requirements of any domestic securities exchange upon which the Stock may be
listed; provided, however, that the Company shall not be required to effect a
registration under Federal or State securities laws with respect to such
exercise. The Company will not take any action which would result in any
adjustment of the Stock Purchase Price (as defined in Section 3 hereof) if the
total number of shares of Stock issuable after such action upon exercise of all
outstanding warrants, together with all shares of Stock then issuable upon
exercise of all options and upon the conversion of all convertible securities
then outstanding, would exceed the total number of shares of Stock then
authorized by the Company's Articles of Incorporation.

        3. Adjustment of Stock Purchase Price and Number of Shares. The Stock
Purchase Price and the number of shares purchasable upon the exercise of this
Warrant shall be subject to adjustment from time to time upon the occurrence of
certain events described in this Section 3. Upon each adjustment of the Stock
Purchase Price, the Holder of this Warrant shall thereafter be entitled to
purchase, at the Stock Purchase Price resulting from such adjustment, the number
of shares obtained by multiplying the Stock Purchase Price in effect immediately
prior to such adjustment by the number of shares purchasable pursuant hereto
immediately prior to such adjustment, and dividing the product thereof by the
Stock Purchase Price resulting from such adjustment.

           3.1 Subdivision or Combination of Stock. In case the Company shall at
any time subdivide its outstanding shares of Stock into a greater number of
shares, the Stock Purchase Price in effect immediately prior to such subdivision
shall be proportionately reduced, and conversely, in case the outstanding shares
of Stock of the Company shall be combined into a smaller number of shares, the
Stock Purchase Price in effect immediately prior to such combination shall be
proportionately increased.

           3.2 Dividends in Stock, Other Stock, Property, Reclassification. If
at any time or from time to time the Holders of Stock (or any shares of stock or
other securities at the time receivable upon the exercise of this Warrant) shall
have received or become entitled to receive, without payment therefor,

               (A) Stock or any shares of stock or other securities which are at
any time directly or indirectly convertible into or exchangeable for Stock, or
any rights or options to subscribe for, purchase or otherwise acquire any of the
foregoing by way of dividend or other distribution, or

               (B) Stock or additional stock or other securities or property
(including cash) by way of spin-off, split-up, reclassification, combination of
shares or similar corporate rearrangement, (other than shares of Stock issued as
a stock split, adjustments in respect of which shall be covered by the terms of
Section 3.1 above), then and in each such case, the Holder hereof shall, upon
the exercise of this Warrant, be entitled to receive, in addition to the number
of shares of Stock receivable thereupon, and without payment of any additional
consideration therefor, the amount of stock and other securities and property
which such Holder would hold on the date of such exercise had he been the holder
of record of


                                     Page 2
<PAGE>   3

such Stock as of the date on which holders of Stock received or became entitled
to receive such shares or all other additional stock and other securities and
property.

           3.3 Reorganization, Reclassification, Consolidation, Merger or Sale.
If any capital reorganization of the capital stock of the Company, or any
consolidation or merger of the Company with another corporation, or the sale of
all or substantially all of its assets to another corporation shall be effected
in such a way that holders of Stock shall be entitled to receive stock,
securities, or other assets or property, then, as a condition of such
reorganization, reclassification, consolidation, merger or sale, lawful and
adequate provisions shall be made whereby the holder hereof shall thereafter
have the right to purchase and receive (in lieu of the shares of the Stock of
the Company immediately theretofore purchasable and receivable upon the exercise
of the rights represented hereby) such shares of stock, securities or other
assets or property as may be issued or payable with respect to or in exchange
for a number of outstanding shares of such Stock equal to the number of shares
of such stock immediately theretofore purchasable and receivable upon the
exercise of the rights represented hereby. In any reorganization described
above, appropriate provision shall be made with respect to the rights and
interests of the Holder of this Warrant to the end that the provisions hereof
(including, without limitation, provisions for adjustments of the Stock Purchase
Price and of the number of shares purchasable and receivable upon the exercise
of this Warrant) shall thereafter be applicable, as nearly as may be, in
relation to any shares of stock, securities or assets thereafter deliverable
upon the exercise hereof.

           3.4 Notice of Adjustment. Upon any adjustment of the Stock Purchase
Price or any increase or decrease in the number of shares purchasable upon the
exercise of this Warrant, the Company shall give written notice thereof, by
first class mail, postage prepaid, addressed to the registered Holder of this
Warrant at the address of such Holder as shown on the books of the Company. The
notice shall be signed by the Company's chief financial officer and shall state
the Stock Purchase Price resulting from such adjustment and the increase or
decrease, if any, in the number of shares purchasable at such price upon the
exercise of this Warrant, setting forth in reasonable detail the method of
calculation and the facts upon which such calculation is based.

           3.5 Other Notices. If at any time:

               (1) the Company shall declare any cash dividend upon its Common
Stock;

               (2) the Company shall declare any dividend upon its Common Stock
payable in stock or make any special dividend or other distribution to the
holders of its Common Stock;

               (3) the Company shall offer for subscription pro rata to the
holders of its Common Stock any additional shares of stock of any class or other
rights;

               (4) there shall be any capital reorganization or reclassification
of the capital stock of the Company; or consolidation or merger of the Company
with, or sale of all or substantially all of its assets to, another corporation;
or

               (5) there shall be a voluntary or involuntary dissolution,
liquidation or winding-up of the Company;

then, in any one or more of said cases, the Company shall give, by first class
mail, postage prepaid, addressed to the Holder of this Warrant at the address of
such Holder as shown on the books of the Company, (a) at least 20 days' prior
written notice of the date on which the books of the Company shall close or a
record shall be taken for such dividend, distribution or subscription rights or
for determining


                                     Page 3
<PAGE>   4

rights to vote in respect of any such reorganization, reclassification,
consolidation, merger, sale, dissolution, liquidation or winding-up, and (b) in
the case of any such reorganization, reclassification, consolidation, merger,
sale, dissolution, liquidation or winding-up, at least 20 days' prior written
notice of the date when the same shall take place; provided, however, that the
Holder shall make a best efforts attempt to respond to such notice as early as
possible after the receipt thereof. Any notice given in accordance with the
foregoing clause (a) shall also specify, in the case of any such dividend,
distribution or subscription rights, the date on which the holders of Common
Stock shall be entitled thereto. Any notice given in accordance with the
foregoing clause (b) shall also specify the date on which the holders of Stock
shall be entitled to exchange their Stock for securities or other property
deliverable upon such reorganization, reclassification, consolidation, merger,
sale, dissolution, liquidation, winding-up or conversion, as the case may be.

           3.6 Certain Events. If any change in the outstanding Common Stock of
the Company or any other event occurs as to which the other provisions of this
Section 3 are not strictly applicable or if strictly applicable would not fairly
protect the purchase rights of the Holder of the Warrant in accordance with such
provisions, then the Board of Directors of the Company shall make an adjustment
in the number and class of shares available under the Warrant, the Stock
Purchase Price or the application of such provisions, so as to protect such
purchase rights as aforesaid. The adjustment shall be such as will give the
Holder of the Warrant upon exercise for the same aggregate Stock Purchase Price
the total number, class and kind of shares as he would have owned had the
Warrant been exercised prior to the event and had he continued to hold such
shares until after the event requiring adjustment.

        4. Company Registration.

           4.1(a) If, at any time or from time to time, the Company shall
determine to register any of its securities pursuant to the Act, either for its
own account or the account of a security holder or holders exercising their
respective registration rights, other than a registration relating solely to
employee benefit plans on Form S-8 or similar forms which may be promulgated in
the future or a registration on Form S-4 or similar forms which may be
promulgated in the future relating solely to a Securities and Exchange
Commission Rule 145 or similar transaction, the Company will (i) promptly give
to each Holder written notice thereof and (ii) include in such registration (and
any related qualification or other compliance under blue sky laws), and in any
underwriting involved therein, all shares of Common Stock issued upon the
exercise of this Warrant ("Registrable Securities") of such Holders as specified
in a written request or requests made within 15 days after receipt of such
written notice from the Company.

               (b) If the registration of which the Company gives notice is for
a registered public offering involving an underwriting, the Company shall so
indicate in the notice given pursuant to Section 4.1(a). In such event the right
of any Holder to registration pursuant to this Section 4.1 shall be conditioned
upon such Holder's agreeing to participate in such underwriting and in the
inclusion of such Holder's Registrable Securities in the underwriting to the
extent provided herein. All Holders proposing to distribute their securities
through such underwriting shall (together with the Company and the other holders
distributing their securities through such underwriting) enter into an
underwriting agreement in customary form with the underwriter or underwriters
selected for such underwriting by the Company or by other holders exercising any
demand registration rights. Notwithstanding any other provision of this Section
4.1, if the underwriter determines that marketing factors require a limitation
of the number of shares to be underwritten, the underwriter may exclude some or
all Registrable Securities or other securities from such registration and
underwriting (hereinafter an "Underwriter Cutback"). In the event of an
Underwriter Cutback, the Company shall so advise all Holders and the other
holders distributing their securities through such underwriting, and the number
of Registrable Securities and other securities


                                     Page 4
<PAGE>   5

that may be included in the registration and underwriting shall be allocated
among all holders thereof (including the Holders but excluding those holders who
are exercising their demand registration rights) in proportion, as nearly as
practicable, to the respective amounts of Common Stock of the Company (including
shares issuable upon conversion of any shares of outstanding Preferred Stock)
held by such holders at the time of filing the registration statement. If any
Holder disapproves of the terms of any such underwriting, such Holder may elect
to withdraw therefrom by written notice to the Company and the underwriter. Any
securities excluded or withdrawn from such underwriting shall be withdrawn from
such registration.

           4.2 Expenses of Registration. All Registration Expenses incurred in
connection with any registration, qualification or compliance pursuant to
Sections 4.1 (exclusive of Selling Expenses but inclusive of the reasonable fees
and expenses of one special counsel to the selling Holders), shall be borne by
the Company.

           4.3 Registration Procedures. In the case of each registration,
qualification or compliance effected by the Company pursuant to this Section 4,
the Company will keep each Holder advised in writing as to the initiation of
each registration, qualification and compliance and as to the completion
thereof. At its expense the Company will:

               (a) Keep such registration, qualification or compliance effective
for a period of 120 days or until the Holder or Holders have completed the
distribution described in the registration statement relating thereto, whichever
first occurs; and

               (b) Furnish such number of prospectuses and other documents
incident thereto as a Holder from time to time may reasonably request.

        Notwithstanding any provision to the contrary in this Agreement, the
Company shall not be required in connection with any registration pursuant to
Section 4.1 to qualify shares in any state or jurisdiction which requires the
Company to qualify to do business or to file a general consent to service of
process.

        4.4 Information by and to Holder. The Holder or Holders of Registrable
Securities included in any registration shall furnish to the Company such
information regarding such Holder or Holders and the distribution proposed by
such Holder or Holders as the Company may request in writing and as shall be
required in connection with any registration, qualification or compliance
referred to in this Section 4. The Company will furnish to the Holder such
number of prospectuses or other documents incident to any registration referred
to in this Section 4 as the Holder may from time to time reasonable request.
Notwithstanding any other provision of this Warrant, the Company shall not be
required to file a registration statement to allow trading of this Warrant.

        4.5 Termination of Registration Rights. The registration rights granted
pursuant to this Section 1 shall terminate (i) upon the fifth anniversary of the
effective date of the first registration statement filed by the Company covering
an underwritten offering of its securities to the general public or (ii) as to
any individual Holder, at such time after the Company's initial registered
public offering as all Registrable Securities held by such Holder can be sold
without compliance with the registration requirements of the Securities Act
pursuant to Rule 144 (including Rule 144(k)) promulgated thereunder.

        4.6 "Market Stand Off" Agreement. Each Shareholder hereby agrees that it
shall not, to the extent requested by the Company and an underwriter of Common
Stock (or other securities) of the Company, sell or otherwise transfer or
dispose (other than to those who agree to be similarly bound) of


                                     Page 5
<PAGE>   6


any Registrable Securities during the one hundred eighty (180) day period
following the effective date of a registration statement of the Company filed
under the Securities Act; provided, however, that such agreement shall only be
applicable to the first such registration statement of the Company which covers
shares (or securities) to be sold on its behalf to the public in an underwritten
offering.

        In order to enforce the foregoing covenant, the Company may impose
stop-transfer instructions with respect to the Registrable Securities of the
Shareholder (and the shares or securities of every other person subject to the
foregoing restriction) until the end of such one hundred eighty (180) day
period.

        5. Issue Tax. The issuance of certificates for shares of Stock upon the
exercise of the Warrant shall be made without charge to the Holder of the
Warrant for any issue tax (other than any applicable income taxes) in respect
thereof; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the issuance and
delivery of any certificate in a name other than that of the then Holder of the
Warrant being exercised.

        6. Closing of Books. The Company will at no time close its transfer
books against the transfer of any warrant or of any shares of Stock issued or
issuable upon the exercise of any warrant in any manner which interferes with
the timely exercise of this Warrant.

        7. No Voting or Dividend Rights; Limitation of Liability. Nothing
contained in this Warrant shall be construed as conferring upon the holder
hereof the right to vote or to consent or to receive notice as a shareholder of
the Company or any other matters or any rights whatsoever as a shareholder of
the Company. No dividends or interest shall be payable or accrued in respect of
this Warrant or the interest represented hereby or the shares purchasable
hereunder until, and only to the extent that, this Warrant shall have been
exercised. No provisions hereof, in the absence of affirmative action by the
holder to purchase shares of Stock, and no mere enumeration herein of the rights
or privileges of the holder hereof, shall give rise to any liability of such
holder for the Stock Purchase Price or as a shareholder of the Company, whether
such liability is asserted by the Company or by its creditors.

        8. Warrants Transferable. Subject to compliance with applicable federal
and state securities laws, this Warrant and all rights hereunder are
transferable, in whole or in portions not less than 10,000 shares, without
charge to the holder hereof (except for transfer taxes), upon surrender of this
Warrant properly endorsed. Each taker and holder of this Warrant, by taking or
holding the same, consents and agrees that this Warrant, when endorsed in blank,
shall be deemed negotiable, and that the holder hereof, when this Warrant shall
have been so endorsed, may be treated by the Company, at the Company's option,
and all other persons dealing with this Warrant as the absolute owner hereof for
any purpose and as the person entitled to exercise the rights represented by
this Warrant, or to the transfer hereof on the books of the Company any notice
to the contrary notwithstanding; but until such transfer on such books, the
Company may treat the registered owner hereof as the owner for all purposes.

        9. Modification and Waiver. This Warrant and any provision hereof may be
changed, waived, discharged or terminated only by an instrument in writing
signed by the Company and the Holder.

        10. Notices. Any notice, request or other document required or permitted
to be given or delivered to the holder hereof or the Company shall be delivered
or shall be sent by certified mail, postage prepaid, to each such holder at its
address as shown on the books of the Company or to the Company at the address
indicated therefor in the first paragraph of this Warrant or such other address
as either may from time to time provide to the other.

                                     Page 6
<PAGE>   7

        11. Binding Effect on Successors. This Warrant shall be binding upon any
corporation succeeding the Company by merger, consolidation or acquisition of
all or substantially all of the Company's assets. All of the obligations of the
Company relating to the Stock issuable upon the exercise of this Warrant shall
survive the exercise and termination of this Warrant. All of the covenants and
agreements of the Company shall inure to the benefit of the successors and
assigns of the holder hereof.

        12. Descriptive Headings and Governing Law. The description headings of
the several sections and paragraphs of this Warrant are inserted for convenience
only and do not constitute a part of this Warrant. This Warrant shall be
construed and enforced in accordance with, and the rights of the parties shall
be governed by, the laws of the State of California.

        13. Lost Warrants. The Company represents and warrants to the Holder
hereof that upon receipt of evidence reasonably satisfactory to the Company of
the loss, theft, destruction, or mutilation of this Warrant and, in the case of
any such loss, theft or destruction, upon receipt of an indemnity reasonably
satisfactory to the Company, or in the case of any such mutilation upon
surrender and cancellation of such Warrant, the Company, at its expense, will
make and deliver a new Warrant, of like tenor, in lieu of the lost, stolen,
destroyed or mutilated Warrant.

        14. Fractional Shares. No fractional shares shall be issued upon
exercise of this Warrant. The Company shall, in lieu of issuing any fractional
share, pay the holder entitled to such fraction a sum in cash equal to such
fraction multiplied by the then effective Stock Purchase Price.

        IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed by its officers, thereunto duly authorized this ____ day of ____, 19__.



                                    GREYSTONE TECHNOLOGY, INCORPORATED
                                    a California corporation


                                    By:
                                       -----------------------------------------
                                            Richard A. Smith,
                                    Its:    Chief Executive Officer


                                     Page 7
<PAGE>   8

EXHIBIT A

                                SUBSCRIPTION FORM

                                                  Date: _________________, 19___

GREYSTONE TECHNOLOGY, INCORPORATED
4950 Murphy Canyon Road
San Diego, CA  92123
Attn:  President

Gentlemen:

        The undersigned hereby elects to exercise the warrant number ____ issued
        to it by GREYSTONE TECHNOLOGY, INCORPORATED (the "Company") and dated
        __________, 1999 (the "Warrant") and to purchase thereunder
        __________________________________ shares of the Common Stock of the
        Company (the "Shares") at a purchase price of $____) per Share or an
        aggregate purchase price of __________________________________ Dollars
        ($__________) (the "Purchase Price").


        Pursuant to the terms of the Warrant the undersigned has delivered the
Purchase Price herewith in full in cash or by certified check or wire transfer.
The undersigned also makes the representations set forth on Exhibit B attached
to the Warrant.


                                            Very truly yours,


                                            By:
                                               ---------------------------------
                                            Title:
                                                  ------------------------------


                                     Page 8
<PAGE>   9

EXHIBIT B

                             TO WARRANT CERTIFICATE

THIS AGREEMENT MUST BE COMPLETED, SIGNED AND RETURNED TO GREYSTONE TECHNOLOGY,
INCORPORATED ALONG WITH THE SUBSCRIPTION FORM BEFORE THE STOCK ISSUABLE UPON
EXERCISE OF THE WARRANT CERTIFICATE NUMBER _____ DATED _______________ WILL BE
ISSUED.


                         _____________________, 19_____


GREYSTONE TECHNOLOGY, INCORPORATED
4950 Murphy Canyon Road
San Diego, CA  92123
Attention:  President


        The undersigned, _________________________ ("Purchaser"), intends to
acquire up to ______________ shares of the Common Stock (the "Stock") of
GREYSTONE TECHNOLOGY, INCORPORATED (the "Company") from the Company pursuant to
the exercise or conversion of a certain Warrant to purchase Stock held by
Purchaser. The Stock will be issued to Purchaser in a transaction not involving
a public offering and pursuant to an exemption from registration under the
Securities Act of 1933, as amended (the "1933 Act") and applicable state
securities laws. In connection with such purchase and in order to comply with
the exemptions from registration relied upon by the Company, Purchaser
represents, warrants and agrees as follows:

        Purchaser is acquiring the Stock for its own account, to hold for
investment, and Purchaser shall not make any sale, transfer or other disposition
of the Stock in violation of the 1933 Act or the General Rules and Regulations
promulgated thereunder by the Securities and Exchange Commission (the "SEC") or
in violation of any applicable state securities law.

        Purchaser has been advised that the Stock has not been registered under
the 1933 Act or state securities laws on the ground that this transaction is
exempt from registration, and that reliance by the Company on such exemptions is
predicated in part on Purchaser's representations set forth in this letter.

        Purchaser has been informed that under the 1933 Act, the Stock must be
held indefinitely unless it is subsequently registered under the 1933 Act or
unless an exemption from such registration (such as Rule 144) is available with
respect to any proposed transfer or disposition by Purchaser of the Stock.
Purchaser further agrees that the Company may refuse to permit Purchaser to
sell, transfer or dispose of the Stock (except as permitted under Rule 144)
unless there is in effect a registration statement under the 1933 Act and any
applicable state securities laws covering such transfer, or unless Purchaser
furnishes an opinion of counsel reasonably satisfactory to counsel for the
Company, to the effect that such registration is not required.

        Purchaser also understands and agrees that there will be placed on the
certificate(s) for the Stock, or any substitutions therefor, a legend stating in
substance:


                                     Page 9
<PAGE>   10

               "The shares represented by this certificate have not been
        registered under the Securities Act of 1933, as amended (the "Securities
        Act"), or any state securities laws. These shares have been acquired for
        investment and may not be sold or otherwise transferred in the absence
        of an effective registration statement for these shares under the
        Securities Act and applicable state securities laws, or an opinion of
        counsel satisfactory to the Company that registration is not required
        and that an applicable exemption is available."

        Purchaser has carefully read this letter and has discussed its
requirements and other applicable limitations upon Purchaser's resale of the
Stock with Purchaser's counsel.


                                            Very truly yours,

                                            Name of Purchaser:

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

                                            By:
                                               ---------------------------------
                                            Title:
                                                  ------------------------------



                                    Page 10