Document:

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                                                                     EXHIBIT 4.5

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 AS
AMENDED, OR ANY STATE SECURITIES LAWS.  THEY MAY NOT BE SOLD, OFFERED FOR SALE,
PLEDGED, OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT
RELATED THERETO OR AN OPINION OF COUNSEL (WHICH MAY BE COMPANY COUNSEL)
REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES
LAWS.

                               WARRANT AGREEMENT
                               -----------------

       To Purchase Shares of the Series A Convertible Preferred Stock of

                                 COMMERX, INC.

                Dated as of June 8, 1999 (the "Effective Date")

WHEREAS, Commerx, Inc., a Delaware corporation (the "Company") has entered into
a Master Lease Agreement dated June 8, 1999, Equipment Schedule No. VL-1 and VL-
2 and VL-3 dated as of June 8, 1999, and related Summary Equipment Schedules
(collectively, the "Leases") with Comdisco, Inc., a Delaware corporation (the
`Warrantholder"); and

     WHEREAS, the Company desires to grant to Warrantholder, in consideration
for such Leases, the right to purchase shares of its Series A Convertible
Preferred Stock;

     NOW, THEREFORE, in consideration of the Warrantholder executing and
delivering such Leases and in consideration of mutual covenants and agreements
contained herein, the Company and Warrantholder agree as follows:

1.   GRANT OF THE RIGHT TO PURCHASE PREFERRED STOCK.
     -----------------------------------------------

     The Company hereby grants to the Warrantholder, and the Warrantholder is
entitled, upon the terms and subject to the conditions hereinafter set forth, to
subscribe to and purchase, from the Company, 91,429 fully paid and non-
assessable shares of the Company's Series A Convertible Preferred Stock
("Preferred Stock") at a purchase price of $1.05 per share (the "Exercise
Price"). The number and purchase price of such shares are subject to adjustment
as provided in Section 8 hereof.

2.   TERM OF THE WARRANT AGREEMENT.
     ------------------------------

     Except as otherwise provided for herein, the term of this Warrant Agreement
and the right to purchase Preferred Stock as granted herein shall commence on
the Effective Date and shall be exercisable for a period of (i) seven (7) years
or (ii) three (3) years from the effective date of the Company's initial public
offering, whichever is earlier.

     If all of the Preferred Stock is converted into shares of Common Stock in
connection with a registration of the Company's Common Stock under the 1933 Act,
then this Warrant shall automatically become exercisable for that number of
shares of Common Stock equal to the number of shares of Common Stock that would
have been received if this Warrant had been exercised in full and the shares of
Preferred Stock received thereupon had been simultaneously converted into shares
of Common Stock immediately prior to such event, and the Exercise Price shall be
automatically adjusted to equal the amount obtained by dividing (i) the
aggregate Exercise Price of the shares of Preferred Stock for this which this
Warrant was exercisable immediately prior to such conversion, by (ii) the number
of shares of Common Stock for which this Warrant is exercisable immediately
after such conversion.
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3.   EXERCISE OF THE PURCHASE RIGHTS.
     --------------------------------

     The purchase rights set forth in this Warrant Agreement are exercisable by
the Warrantholder, in whole or in part, at any time, or from time to time, prior
to the expiration of the term set forth in Section 2 above, by tendering to the
Company at its principal office a notice of exercise in the form attached hereto
as Exhibit I (the "Notice of Exercise"), duly completed and executed. Promptly
upon receipt of the Notice of Exercise and the payment of the purchase price in
accordance with the terms set forth below, and in no event later than twenty-one
(21) days thereafter, the Company shall issue to the Warrantholder a certificate
for the number of shares of Preferred Stock purchased and shall execute the
acknowledgment of exercise in the form attached hereto as Exhibit II (the
"Acknowledgment of Exercise") indicating the number of shares which remain
subject to future purchases, if any.

     The Exercise Price may be paid at the Warrantholder's election either (i)
by cash or check, or (ii) by surrender of Warrants ("Net Issuance") as
determined below. If the Warrantholder elects the Net Issuance method, the
Company will issue Preferred Stock in accordance with the following formula:

                              X = Y(A-B)
                                  ------
                                     A

     Where:  X  =   the number of shares of Preferred Stock to be issued to
                    the Warrantholder.

             Y  =   the number of shares of Preferred Stock requested to be
                    exercised under this Warrant Agreement.

             A  =   the fair market value of one (1) share of Preferred Stock.

             B  =   the Exercise Price.

     For purposes of the above calculation, current fair market value of
Preferred Stock shall mean with respect to each share of Preferred Stock:

                    (i)    if the exercise is in connection with an initial
                           public offering of the Company's Common Stock, and if
                           the Company's Registration Statement relating to such
                           public offering has been declared effective by the
                           SEC, then the fair market value per share shall be
                           the product of (x) the initial "Price to Public"
                           specified in the final prospectus with respect to the
                           offering and (y) the number of shares of Common Stock
                           into which each share of Preferred Stock is
                           convertible at the time of such exercise;

                    (ii)   if this Warrant is exercised after, and not in
                           connection with the Company's initial public
                           offering, and:

                           (a)  if traded on a securities exchange, the fair
                                market value shall be deemed to be the product
                                of (x) the average of the closing prices over a
                                ten (10) day period ending three days before the
                                day the current fair market value of the
                                securities is being determined and (y) the
                                number of shares of Common Stock into which each
                                share of Preferred Stock is convertible at the
                                time of such exercise; or

                           (b)  if actively traded over-the-counter, the fair
                                market value shall be deemed to be the product
                                of (x) the average of the closing bid and asked
                                prices quoted on the NASDAQ system (or similar
                                system) over the ten (10) day period ending
                                three days before the day the current fair
                                market value of the securities is being
                                determined and (y) the number of shares

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                           of Common Stock into which each share of Preferred
                           Stock is convertible at the time of such exercise;

                    (iii)  if at any time the Common Stock is not listed on any
                           securities exchange or quoted in the NASDAQ System or
                           the over-the-counter market, the current fair market
                           value of Preferred Stock shall be the product of (x)
                           the highest price per share which the Company could
                           obtain from a willing buyer (not a current employee
                           or director) for shares of Common Stock sold by the
                           Company, from authorized but unissued shares, as
                           determined in good faith by its Board of Directors
                           and (y) the number of shares of Common Stock into
                           which each share of Preferred Stock is convertible at
                           the time of such exercise, unless the Company shall
                           become subject to a merger, acquisition or other
                           consolidation pursuant to which the Company is not
                           the surviving party, in which case the fair market
                           value of Preferred Stock shall be deemed to be the
                           value received by the holders of the Company's
                           Preferred Stock on a common equivalent basis pursuant
                           to such merger or acquisition.

     Upon partial exercise by either cash or Net Issuance, the Company shall
promptly issue an amended Warrant Agreement representing the remaining number of
shares purchasable hereunder. All other terms and conditions of such amended
Warrant Agreement shall be identical to those contained herein, including, but
not limited to the Effective Date hereof.

4.   RESERVATION OF SHARES.
     ----------------------

     (a)  Authorization and Reservation of Shares. The Company will take the
          ---------------------------------------
necessary steps to increase the number of authorized Preferred Series A
Convertible Preferred Stock to accommodate this Warrant Agreement and the
Warrant Agreement Associated with the Comdisco Ventures $1.5 million lease to
Commerx of hardware and software. Commerx will reserve a sufficient number of
shares of its Preferred Stock to provide for the exercise of the rights to
purchase Preferred Stock as provided for herein.

     (b)  Registration or Listing. If any shares of Preferred Stock required to
          -----------------------
be reserved hereunder require registration with or approval of any governmental
authority under any Federal or State law (other than any registration under the
Securities Act of 1933, as amended ("1933 Act"), as then in effect, or any
similar Federal statute then enforced, or any state securities law, required by
reason of any transfer involved in such conversion), or listing on any domestic
securities exchange, before such shares may be issued upon conversion, the
Company will, at its expense and as expeditiously as possible, use its best
efforts to cause such shares to be duly registered, listed or approved for
listing on such domestic securities exchange, as the case may be.

5.   NO FRACTIONAL SHARES OR SCRIP.
     ------------------------------

     No fractional shares or scrip representing fractional shares shall be
issued upon the exercise of the Warrant but in lieu of such fractional shares
the Company shall make a cash payment therefor upon the basis of the Exercise
Price then in effect.

6.   NO RIGHTS AS SHAREHOLDER.
     -------------------------

     This Warrant Agreement does not entitle the Warrantholder to any voting
rights or other rights as a shareholder of the Company prior to the exercise of
the Warrant.

                                       3
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7.   WARRANTHOLDER REGISTRY.
     -----------------------

     The Company shall maintain a registry showing the name and address of the
registered holder of this Warrant Agreement.

8.   ADJUSTMENT RIGHTS.
     ------------------

     The purchase price per share and the number of shares of Preferred Stock
purchasable hereunder are subject to adjustment, as follows:

     (a)  Merger and Sale of Assets. If at any time there shall be a capital
          -------------------------
reorganization of the shares of the Company's stock (other than a combination,
reclassification, exchange or subdivision of shares otherwise provided for
herein), or a merger or consolidation of the Company with or into another
corporation whether or not the Company is the surviving corporation, or the sale
of all or substantially all of the Company's properties and assets to any other
person (hereinafter referred to as a "Merger Event"), then, as a part of such
Merger Event, lawful provision shall be made so that the Warrantholder shall
thereafter be entitled to receive, upon exercise of the Warrant, the number of
shares of preferred stock or other securities of the successor corporation
resulting from such Merger Event, equivalent in value to that which would have
been issuable if Warrantholder had exercised this Warrant immediately prior to
the Merger Event. In any such case, appropriate adjustment (as determined in
good faith by the Company's Board of Directors) shall be made in the application
of the provisions of this Warrant Agreement with respect to the rights and
interest of the Warrantholder after the Merger Event to the end that the
provisions of this Warrant Agreement (including adjustments of the Exercise
Price and number of shares of Preferred Stock purchasable) shall be applicable
to the greatest extent possible.

     (b)  Reclassification of Shares. If the Company at any time shall, by
          --------------------------
combination, reclassification, exchange or subdivision of securities or
otherwise, change any of the securities as to which purchase rights under this
Warrant Agreement exist into the same or a different number of securities of any
other class or classes, this Warrant Agreement shall thereafter represent the
right to acquire such number and kind of securities as would have been issuable
as the result of such change with respect to the securities which were subject
to the purchase rights under this Warrant Agreement immediately prior to such
combination, reclassification, exchange, subdivision or other change.

     (c)  Subdivision or Combination of Shares. If the Company at any time shall
          ------------------------------------
combine or subdivide its Preferred Stock, the Exercise Price shall be
proportionately decreased in the case of a subdivision, or proportionately
increased in the case of a combination.

     (d)  Stock Dividends. If the Company at any time shall pay a dividend
          ---------------
payable in, or make any other distribution (except any distribution specifically
provided for in the foregoing subsections (a) or (b)) of the Company's stock,
then the Exercise Price shall be adjusted, from and after the record date of
such dividend or distribution, to that price determined by multiplying the
Exercise Price in effect immediately prior to such record date by a fraction (i)
the numerator of which shall be the total number of all shares of the Company's
stock outstanding immediately prior to such dividend or distribution, and (ii)
the denominator of which shall be the total number of all shares of the
Company's stock outstanding immediately after such dividend or distribution. The
Warrantholder shall thereafter be entitled to purchase, at the Exercise Price
resulting from such adjustment, the number of shares of Preferred Stock
(calculated to the nearest whole share) obtained by multiplying the Exercise
Price in effect immediately prior to such adjustment by the number of shares of
Preferred Stock issuable upon the exercise hereof immediately prior to such
adjustment and dividing the *product thereof by the Exercise Price resulting
from such adjustment.

     (e)  Antidilution Rights. Additional antidilution rights applicable to the
          -------------------
Preferred Stock purchasable hereunder are as set forth in the Company's
Certificate of Incorporation, as amended through the Effective Date, a true and
complete copy of which is attached hereto as Exhibit A (the "Charter"). The
Company shall promptly provide the Warrantholder with any restatement,
amendment, modification or waiver of the Charter. The Preferred Stock
purchasable hereunder shall have the benefit

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of the same antidilution rights applicable to such Preferred Stock as designated
in the Company's Charter, and the Company shall provide Warrantholder with all
notices and information at the time and to the extent it is required to do so to
the holders of the Preferred Stock

     (f)  Notice of Adjustments. If-. (i) the Company shall declare any dividend
          ---------------------
or distribution upon its stock, whether in cash, property, stock or other
securities; (ii) the Company shall offer for subscription prorata to the holders
of any class of its Preferred or other convertible stock any additional shares
of stock of any class or other rights; (iii) there shall be any Merger Event;
(iv) there shall be an'ini0al public offering; or (v) there shall be any
voluntary dissolution, liquidation or winding up of the Company; then, in
connection with each such event, the Company shall send to the Warrantholder (A)
at least twenty (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, subscription rights (specifying the date on which the holders of
Preferred Stock shall be entitled thereto) or for determining rights to vote in
respect of such Merger Event, dissolution, liquidation or winding up; (B) in the
case of any such Merger Event, dissolution, liquidation or winding up, at least
twenty (20) days' prior written notice of the date when the same shall take
place (and specifying the date on which the holders of Preferred Stock shall be
entitled to exchange their Preferred Stock for securities or other property
deliverable upon such Merger Event, dissolution, liquidation or winding up); and
(C) in the case of a public offering, the Company shall give the Warrantholder
at least twenty (20) days written notice prior to the effective date thereof.

     Each such written notice shall set forth, in reasonable detail, (1) the
event requiring the adjustment, (ii) the amount of the adjustment, (iii) the
method by which such adjustment was calculated, (iv) the Exercise Price, and (v)
the number of shares subject to purchase hereunder after giving effect to such
adjustment, and shall be given by first class mail, postage prepaid, addressed
to the Warrantholder, at the address as shown on the books of the Company.

     (g)  Timely Notice. Failure to timely provide such notice required by
          -------------
subsection (g) above shall entitle Warrantholder to retain the benefit of the
applicable notice period notwithstanding anything to the contrary contained in
any insufficient notice received by Warrantholder. The notice period shall begin
on the date Warrantholder actually receives a written notice containing all the
information specified above.

9.   REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE COMPANY.
     --------------------------------------------------------

     (a)  Reservation of Preferred Stock. The Preferred Stock issuable upon
          ------------------------------
exercise of the Warrantholder's rights shall be duly and validly reserved and,
when issued in accordance with the provisions of this Warrant Agreement, will be
validly issued, fully paid and non-assessable, and will be free of any taxes,
liens, charges or encumbrances of any nature whatsoever; provided, however, that
the Preferred Stock issuable pursuant to this Warrant Agreement may be subject
to restrictions on transfer under state and/or Federal securities laws. The
Company has made available to the Warrantholder true, correct and complete
copies of its Charter and Bylaws, as amended. The issuance of certificates for
shares of Preferred Stock upon exercise of the Warrant Agreement shall be made
without charge to the Warrantholder for any issuance tax in respect thereof, or
other cost incurred by the Company in connection with such exercise and the
related issuance of shares of Preferred Stock. The Company shall not be required
to pay any tax which may be payable in respect of any transfer involved and the
issuance and delivery of any certificate in a name other than that of the
Warrantholder.

     (b)  Due Authority. The execution and delivery by the Company of this
          -------------
Warrant Agreement and the performance of all obligations of the Company
hereunder, including the issuance to Warrantholder of the right to, acquire the
shares of Preferred Stock, have been duly authorized by all necessary corporate
action on the part of the Company, and the Loans and this Warrant Agreement are
not inconsistent with the Company's Charter or Bylaws, do not contravene any law
or governmental rule, regulation or order applicable to it, do not and will not
contravene any provision of, or constitute a default under, any indenture,
mortgage, contract or other instrument to which it is a party or by which it is
bound, and the Loans and this Warrant Agreement constitute legal, valid and
binding agreements of the Company, enforceable in accordance with their
respective terms.

                                       5
<PAGE>

     (c)  Consents and Approvals. No consent or approval of, giving of notice
          ----------------------
to, registration with, or taking ,of any other action in respect of any state,
Federal or other governmental authority or agency is. required with respect to
the execution, delivery and performance by the Company of its obligations under
this Warrant Agreement, except for the filing of notices pursuant to Regulation
D under the 1933 Act and any filing required by applicable state securities law,
which filings will be effective by the time required thereby.

     (d)  Issued Securities. All issued and outstanding shares of Common Stock,
          -----------------
Preferred Stock or any other securities of the Company have been duly authorized
and validly issued and are fully paid and nonassessable.  All outstanding shares
of Common Stock, Preferred Stock and any other securities were issued in full
compliance with all Federal and state securities laws. In addition:

(i)  The authorized capital of the Company consists of (A) 20,000,000 shares of
     Common Stock, of which 7,430,000 shares are issued and outstanding, and (B)
     8,570,000shares of preferred stock, of which 8,570,000 shares are issued
     and outstanding and are convertible into one share of Common Stock at $1.05
     per share.

(ii) The Company has reserved (A) 4,000,000 shares of Common Stock for issuance
     under its Stock Option Plan. Approximately1,900,000 shares have been
     granted subject to certain conditions, at an average price of $0.50 per
     share.

Internet Capital Group is in process of purchasing 1,904,572 shares of Series A
preferred Stock at $1.05 per share.  The closing for the transaction is
tentatively scheduled for June 15, 1999.  There are no other options, warrants,
conversion privileges or other rights presently outstanding to purchase or
otherwise acquire any authorized but unissued shares of the Company's capital
stock or other securities of the Company.

     (e)  Other Commitments to Register Securities. Except for Series A
          ----------------------------------------
Preferred stockholders, the Company is not, pursuant to the terms of any other
agreement currently in existence, under any obligation to register under the
1933 Act any of its presently outstanding securities or any of its securities
which may hereafter be issued.

     (f)  Exempt Transaction. Subject to the accuracy of the Warrantholder's
          ------------------
representations in Section 10 hereof, the issuance of the Preferred Stock upon
exercise of this Warrant will constitute a transaction exempt from (i) the
registration requirements of Section 5 of the 1933 Act, in reliance upon Section
4(2) thereof, and (ii) the qualification requirements of the applicable state
securities laws.

     (g)  Compliance with Rule 144. At the written request of the Warrantholder,
          ------------------------
who proposes to sell Preferred Stock issuable upon the exercise of the Warrant
in compliance with Rule 144 promulgated by the Securities and Exchange
Commission, the Company shall furnish to the Warrantholder, within ten days
after receipt of such request, a written statement confirming the Company's
compliance with the filing requirements of the Securities and Exchange
Commission as set forth in such Rule, as such Rule may be amended from time to
time.

10.  REPRESENTATIONS AND COVENANTS OF THE WARRANTHOLDER.
     --------------------------------------------------

     This Warrant Agreement has been entered into by the Company in reliance
upon the following representations and covenants of the Warrantholder

     (a)  Investment Purpose. The right to acquire Preferred Stock or the
          ------------------
Preferred Stock issuable upon exercise of the Warrantholder's rights contained
herein will be acquired for investment and not with a view to the sale or
distribution of any part thereof, and the Warrantholder has no present intention
of selling or engaging in any public distribution of the same except pursuant to
a registration or exemption.

                                       6
<PAGE>

     (b)  Private Issue. The Warrantholder understands (I) that the Preferred
          -------------
Stock issuable upon exercise of this Warrant is not registered under the 1933
Act or qualified under applicable state securities laws on the ground that the
issuance contemplated by this Warrant Agreement will be exempt from the
registration and qualifications requirements thereof, and (ii) that the
Company's reliance on such exemption is predicated on the representations set
forth In this Section 10.

     (c)  Disposition of Warrantholder's Rights. In no event will the
          -------------------------------------
Warrantholder make a disposition of any of its rights to acquire Preferred Stock
or Preferred Stock issuable upon exercise of such rights unless and until (I) ft
shall have notified the Company of the proposed disposition, and (ii) if
requested by the Company, it shall have furnished the Company with an opinion of
counsel (which counsel may either be inside or outside counsel to the
Warrantholder) satisfactory to the Company and its counsel to the effect that
(A) appropriate action necessary for compliance with the 1933 Act has been
taken, or (B) an exemption from the registration requirements of the 1933 Act is
available. Notwithstanding the foregoing, the restrictions imposed upon the
transferability of any of its rights to acquire Preferred Stock or Preferred
Stock issuable on the exercise of such rights do not apply to transfers from the
beneficial owner of any of the aforementioned securities to its nominee or from
such nominee to its beneficial owner, and shall terminate as to any particular
share of Preferred Stock when (1) such security shall have been effectively
registered under the 1933 Act and sold by the holder thereof in accordance with
such registration or (2) such security shall have been sold without registration
in compliance with Rule 144 under the 1933 Act, or (3) a letter shall have been
issued to the Warrantholder at its request by the staff of the Securities and
Exchange Commission or a ruling shall have been issued to the Warrantholder at
its request by such Commission stating that no action shall be recommended by
such staff or taken by such Commission, as the case may be, if such security is
transferred without registration under the 1933 Act in accordance with the
conditions set forth in such letter or ruling and such letter or ruling
specifies that no subsequent restrictions on transfer are required. Whenever the
restrictions imposed hereunder shall terminate, as hereinabove provided, the
Warrantholder or holder of a share of Preferred Stock then outstanding as to
which such restiic6ons have terminated shall be entitled to receive from the
Company, without expense to such holder, one or more new certificates for the
Warrant or for such shares of Preferred Stock not bearing any restrictive
legend.

     (d)  Financial Risk. The Warrantholder has such knowledge and experience in
          --------------
and business matters as to be capable of evaluating the merits and
risks of its investment, and has the ability to bear the economic risks of its
investment. In addition, Warrantholder has an opportunity to make inquiries to
the Company regarding its business and financial affairs and such inquiries have
been answered to Warrantholder's satisfaction.

     (e)  Risk of No Registration. The Warrantholder understands that if the
          -----------------------
Company does not register with the Securities and Exchange Commission pursuant
to Section 12 of the 1934 Act (the "1934 Act), or file reports pursuant to
Section 15(d), of the 1934 Act, or if a registration statement covering the
securities under the 1933 Act is not in effect when it desires to sell (I) the
rights to purchase Preferred Stock pursuant to this Warrant Agreement, or (ii)
the Preferred Stock issuable upon exercise of the right to -purchase, it may be
required to hold such securities for an indefinite period. The Warrantholder
also understands that any sale of its rights of the Warrantholder to purchase
Preferred Stock or Preferred Stock which might be made by it in reliance upon
Rule 144 under the 1933 Act may be made only in accordance with the terms and
conditions of that Rule.

     (f)  Accredited Investor. Warrantholder is an "accredited investor" within
          -------------------
the meaning of the Securities and Exchange Rule 501 of Regulation D, as
presently in effect.

11.  TRANSFERS.
     ----------

     Subject to the terms and conditions contained in Section 10 hereof, this
Warrant Agreement and all rights hereunder are transferable in whole or in part
by the Warrantholder and any successor transferee, provided, however, in no
event shall the number of transfers of the rights and interests in all of the
Warrants exceed three (3) transfers. The transfer shall be recorded on the books
of the Company upon receipt by the Company of a notice of transfer in the form
attached hereto as Exhibit III (the

                                       7
<PAGE>

"Transfer Notice"), at its principal offices and the payment to the Company of
all transfer taxes and other governmental charges imposed on such transfer. Such
transfers will be limited to persons or entities associated with Warrantholder.

12.  MISCELLANEOUS.
     --------------

     (a)  Effective Date. The provisions of this Warrant Agreement shall be
          --------------
construed and shall be given effect in all respects as if it had been executed
and delivered by the Company on the date hereof. This Warrant Agreement shall be
binding upon any successors or assigns of the Company.

     (b)  Attorney's Fees. In any litigation, arbitration or court proceeding
          ---------------
between the Company and the Warrantholder relating hereto, the prevailing party
shall be entitled to attorneys' fees and expenses and all costs of proceedings
incurred in enforcing this Warrant Agreement.

     (c)  Governing Law. This Warrant Agreement shall be governed by and
          -------------
construed for all purposes under and in accordance with the laws of the State of
Illinois.

     (d)  Counterparts. This Warrant Agreement may be executed in two or more
          ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument

     (e)  Notices. Any notice required or permitted hereunder shall be given in
          -------
writing and shall be deemed effectively given upon personal delivery, facsimile
transmission (provided that the original is sent by personal delivery or mail as
hereinafter set forth) or seven (7) days after deposit in the United States
mail, by registered or certified mail, addressed (i) to the Warrantholder at
6111 North River Road, Rosemont, Illinois 60018, Attention: Venture Lease
Administration, cc: Legal Department, Attention.: General Counsel, (and/or, if
by facsimile, (847) 518-5465 and (847)518-5088, and (ii) to the Company at 350
N. LaSalle St. Suite 1000, Chicago, IL 60610, Attention: Chief Financial Officer
(and/or if by facsimile, (312) 832-9351 or at such other address as any such
party may subsequently designate by written notice to the other party.

     (f)  Remedies. In the event of any default hereunder, the non-defaulting
          --------
party may proceed to protect and enforce Its rights either by suit in equity
and/or by action at law, including but not limited to an action for damages as a
result of any such default, and/or an action for specific performance for any
default where Warrantholder will not have an adequate remedy at law and where
damages will not be readily ascertainable. The Company expressly agrees that it
shall not oppose an application by the Warrantholder or any other person
entitled to the benefit of this Agreement requiring specific performance of any
or all provisions hereof or enjoining the Company from continuing to commit any
such breach of this Agreement.

     (g)  No Impairment of Rights. The Company will not, by amendment of its
          -----------------------
Charter or through any other means, avoid or seek to avoid the observance or
performance of any of the terms of this Warrant, but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
actions as may be necessary or appropriate in order to protect the rights of the
Warrantholder against impairment.

     (h)  Survival. The representations, warranties, covenants and conditions of
          --------
the respective parties contained herein or made pursuant to this Warrant
Agreement shall survive the execution and delivery of this Warrant Agreement.

     (i)  Severability. In the event any one or more of the provisions of this
          ------------
Warrant Agreement shall for any reason be held invalid, illegal or
unenforceable, the remaining provisions of this Warrant Agreement shall be
unimpaired. and the invalid, illegal or unenforceable provision shall be
replaced by a mutually acceptable valid, legal and enforceable provision, which
comes closest to the intention of the parties underlying the invalid, illegal or
unenforceable provision.

                                       8
<PAGE>

     (j)  Amendments. Any provision of this Warrant Agreement may be amended by
          ----------
a written instrument signed by the Company and by the Warrantholder.

     (k)  Additional Documents. The Company, upon execution of this Warrant
          --------------------
Agreement, shall provide the Warrantholder with certified resolutions with
respect to the representations, warranties and covenants set forth in
subparagraphs (a) through (d) of Section 9 above. The Company shall also supply
such other documents as the Warrantholder may from time to time reasonably
request.

     IN WITNESS WHEREOF, the parties hereto have caused this Warrant Agreement
to be executed by its officers thereunto duly authorized as of the Effective
Date.

                              Company: COMMERX, INC.

                              By:    /s/ Nick Stojka

                              Title: EVP and Director

                              Warrantholder: COMDISCO, INC.

                              By:    /s/ James Labe

                              Title: President, Comdisco Ventures Division

                                       9
<PAGE>

                                   EXHIBIT I
                                   ---------

                              NOTICE OF EXERCISE

To:__________________________

(1)  The undersigned Warrantholder hereby elects to purchase _____ shares of the
     Series _____ Preferred Stock of __________, pursuant to the terms of the
     Warrant Agreement dated the _____ day of __________, 19_____ (the "Warrant
     Agreement") between ____________________ and the Warrantholder, and tenders
     herewith payment of the purchase price for such shares in full, together
     with all applicable transfer taxes, if any.

(2)  In exercising its rights to purchase the Series _______ Preferred Stock of
     ___________________, the undersigned hereby confirms and acknowledges the
     investment representations and warranties made in Section 10 of the Warrant
     Agreement

(3)  Please issue a certificate or certificates representing said shares of
     Series _______ Preferred Stock in the name of the undersigned or in such
     other name as is specified below.

_______________________________
(Name)

_______________________________
(Address)

Warrantholder: COMDISCO, INC.

By:____________________________

Title:_________________________

Date:__________________________

                                       10
<PAGE>

                                  EXHIBIT II
                                  ----------

                          ACKNOWLEDGMENT OF EXERCISE

     The undersigned ______________________, hereby acknowledge receipt of the
"Notice of Exercise" from Comdisco, Inc., to purchase _____ shares of the Series
____ Preferred Stock of ______________, pursuant to the terms of the Warrant
Agreement, and further acknowledges that __________ shares remain subject to
purchase under the terms of the Warrant Agreement.

                                    Company:

                                    By:_______________________________

                                    Title:____________________________

                                    Date:_____________________________

                                       11
<PAGE>

                                  EXHIBIT III
                                  -----------

                                TRANSFER NOTICE

(To transfer or assign the foregoing Warrant Agreement execute this form and
supply required information. Do not use this form to purchase shares.)

     FOR VALUE RECEIVED, the foregoing Warrant Agreement and all rights
evidenced thereby are hereby transferred and assigned to

______________________________
(Please Print)

whose address is____________________________________________________

____________________________________________________________________

                                   Dated:___________________________

                                   Holders Signature:_______________

                                   Holders Address:_________________

                                   _________________________________

              Signature Guaranteed:_________________________________

NOTE: The signature to this Transfer Notice must correspond with the name as it
      appears on the face of the Warrant Agreement without alteration or
      enlargement or any change whatever. Officers of corporations and those
      acting in a fiduciary or other representative capacity should file proper
      evidence of authority to assign the foregoing Warrant Agreement

                                       12<PAGE>

                                                                     EXHIBIT 4.6

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 AS
AMENDED, OR ANY STATE SECURITIES LAWS.  THEY MAY NOT BE SOLD, OFFERED FOR SALE,
PLEDGED, OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT
RELATED THERETO OR AN OPINION OF COUNSEL (WHICH MAY BE COMPANY COUNSEL)
REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES
LAWS.

                               WARRANT AGREEMENT

       To Purchase Shares of the Series A Convertible Preferred Stock of

                                 COMMERX, INC.

                Dated as of July 23, 1999 (the "Effective Date")

WHEREAS, Commerx, Inc., a Delaware corporation (the "Company") has entered into
a Loan and Security Agreement as of June 8, 1999, and related Promissory Note
dated as of June 8, 1999, and related Summary Equipment Schedules (collectively,
the "Loans") with Comdisco, Inc., a Delaware corporation (the 'Warrantholder");
and

     WHEREAS, the Company desires to grant to Warrantholder, in consideration
for such Loans, the right to purchase shares of its Series A Convertible
Preferred Stock;

     NOW, THEREFORE, in consideration of the Warrantholder executing and
delivering such Loans and in consideration of mutual covenants and agreements
contained herein, the Company and Warrantholder agree as follows:

1.   GRANT OF THE RIGHT TO PURCHASE PREFERRED STOCK.
     -----------------------------------------------

     The Company hereby grants to the Warrantholder, and the Warrantholder is
entitled, upon the terms and subject to the conditions hereinafter set forth, to
subscribe to and purchase, from the Company, 21,429 fully paid and non-
assessable shares of the Company's Series A Convertible Preferred Stock
("Preferred Stock") at a purchase price of $1.05 per share (the "Exercise
Price").  The number and purchase price of such shares are subject to adjustment
as provided in Section 8 hereof.

     If all of the Preferred Stock is converted into shares of Common Stock in
connection with a registration of the Company's Common Stock under the 1933 Act,
then this Warrant shall automatically become exercisable for that number of
shares of Common Stock equal to the number of shares of Common Stock that would
have been received if this Warrant had been exercised in full and the shares of
Preferred Stock received thereupon had been simultaneously converted into shares
of Common Stock immediately prior to such event, and the Exercise Price shall be
automatically adjusted to equal the amount obtained by dividing (i) the
aggregate Exercise Price of the shares of Preferred Stock for this which this
Warrant was exercisable immediately prior to such conversion, by (ii) the number
of shares of Common Stock for which this Warrant is exercisable immediately
after such conversion.

2.   TERM OF THE WARRANT AGREEMENT.
     ------------------------------

     Except as otherwise provided for herein, the term of this Warrant Agreement
and the right to purchase Preferred Stock as granted herein shall commence on
the Effective Date and shall be exercisable for a period of (i) seven (7) years
or (ii) three (3) years from the effective date of the Company's initial public
offering, whichever is earlier.
<PAGE>

     If all of the Preferred Stock is converted into shares of Common Stock in
connection with a registration of the Company's Common Stock under the 1933 Act,
then this Warrant shall automatically become exercisable for that number of
shares of Common Stock equal to the number of shares of Common Stock that would
have been received if this Warrant had been exercised in full and the shares of
Preferred Stock received thereupon had been simultaneously converted into shares
of Common Stock immediately prior to such event, and the Exercise Price shall be
automatically adjusted to equal the amount obtained by dividing (i) the
aggregate Exercise Price of the shares of Preferred Stock for this which this
Warrant was exercisable immediately prior to such conversion, by (ii) the number
of shares of Common Stock for which this Warrant is exercisable immediately
after such conversion.

3.   EXERCISE OF THE PURCHASE RIGHTS.
     --------------------------------

     The purchase rights set forth in this Warrant Agreement are exercisable by
the Warrantholder, in whole or in part, at any time, or from time to time, prior
to the expiration of the term set forth in Section 2 above, by tendering to the
Company at its principal office a notice of exercise in the form attached hereto
as Exhibit I (the "Notice of Exercise"), duly completed and executed.  Promptly
upon receipt of the Notice of Exercise and the payment of the purchase price in
accordance with the terms set forth below, and in no event later than twenty-one
(21) days thereafter, the Company shall issue to the Warrantholder a certificate
for the number of shares of Preferred Stock purchased and shall execute the
acknowledgment of exercise in the form attached hereto as Exhibit II (the
"Acknowledgment of Exercise") indicating the number of shares which remain
subject to future purchases, if any.

     The Exercise Price may be paid at the Warrantholder's election either (i)
by cash or check, or (ii) by surrender of Warrants ("Net Issuance") as
determined below.  If the Warrantholder elects the Net Issuance method, the
Company will issue Preferred Stock in accordance with the following formula:

                    X = Y(A-B)
                        ------
                           A

     Where:X =  the number of shares of Preferred Stock to be issued to the
Warrantholder.

           Y =  the number of shares of Preferred Stock requested to be
                      exercised under this Warrant Agreement.

           A =  the fair market value of one (1) share of Preferred Stock.

           B =  the Exercise Price.

     For purposes of the above calculation, current fair market value of
Preferred Stock shall mean with respect to each share of Preferred Stock:

                (i)    if the exercise is in connection with an initial public
                       offering of the Company's Common Stock, and if the
                       Company's Registration Statement relating to such public
                       offering has been declared effective by the SEC, then the
                       fair market value per share shall be the product of (x)
                       the initial "Price to Public" specified in the final
                       prospectus with respect to the offering and (y) the
                       number of shares of Common Stock into which each share of
                       Preferred Stock is convertible at the time of such
                       exercise;

                (ii)   if this Warrant is exercised after, and not in connection
                       with the Company's initial public offering, and:

                       (a) if traded on a securities exchange, the fair market
                       value shall be deemed to be the product of (x) the
                       average of the closing prices over a ten (10) day period
                       ending three days before the day the current fair

                                       2
<PAGE>

                       market value of the securities is being determined and
                       (y) the number of shares of Common Stock into which each
                       share of Preferred Stock is convertible at the time of
                       such exercise; or

                       (b) if actively traded over-the-counter, the fair market
                       value shall be deemed to be the product of (x) the
                       average of the closing bid and asked prices quoted on the
                       NASDAQ system (or similar system) over the ten (10) day
                       period ending three days before the day the current fair
                       market value of the securities is being determined and
                       (y) the number of shares of Common Stock into which each
                       share of Preferred Stock is convertible at the time of
                       such exercise;

                (iii)  if at any time the Common Stock is not listed on any
                       securities exchange or quoted in the NASDAQ System or the
                       over-the-counter market, the current fair market value of
                       Preferred Stock shall be the product of (x) the highest
                       price per share which the Company could obtain from a
                       willing buyer (not a current employee or director) for
                       shares of Common Stock sold by the Company, from
                       authorized but unissued shares, as determined in good
                       faith by its Board of Directors and (y) the number of
                       shares of Common Stock into which each share of Preferred
                       Stock is convertible at the time of such exercise, unless
                       the Company shall become subject to a merger, acquisition
                       or other consolidation pursuant to which the Company is
                       not the surviving party, in which case the fair market
                       value of Preferred Stock shall be deemed to be the value
                       received by the holders of the Company's Preferred Stock
                       on a common equivalent basis pursuant to such merger or
                       acquisition.

     Upon partial exercise by either cash or Net Issuance, the Company shall
promptly issue an amended Warrant Agreement representing the remaining number of
shares purchasable hereunder. All other terms and conditions of such amended
Warrant Agreement shall be identical to those contained herein, including, but
not limited to the Effective Date hereof.

4.   RESERVATION OF SHARES.
     ----------------------

     (a)  Authorization and Reservation of Shares. The Company will take the
          ---------------------------------------
necessary steps to increase the number of authorized Preferred Series A
Convertible Preferred Stock to accommodate this Warrant Agreement and the
Warrant Agreement Associated with the Comdisco Ventures $1.5 million lease to
Commerx of hardware and software. Commerx will reserve a sufficient number of
shares of its Preferred Stock to provide for the exercise of the rights to
purchase Preferred Stock as provided for herein.

     (b)  Registration or Listing. If any shares of Preferred Stock required to
          -----------------------
be reserved hereunder require registration with or approval of any governmental
authority under any Federal or State law (other than any registration under the
Securities Act of 1933, as amended ("1933 Act"), as then in effect, or any
similar Federal statute then enforced, or any state securities law, required by
reason of any transfer involved in such conversion), or listing on any domestic
securities exchange, before such shares may be issued upon conversion, the
Company will, at its expense and as expeditiously as possible, use its best
efforts to cause such shares to be duly registered, listed or approved for
listing on such domestic securities exchange, as the case may be.

5.   NO FRACTIONAL SHARES OR SCRIP.
     ------------------------------

     No fractional shares or scrip representing fractional shares shall be
issued upon the exercise of the Warrant but in lieu of such fractional shares
the Company shall make a cash payment therefor upon the basis of the Exercise
Price then in effect.

                                       3
<PAGE>

6.   NO RIGHTS AS SHAREHOLDER.
     -------------------------

     This Warrant Agreement does not entitle the Warrantholder to any voting
rights or other rights as a shareholder of the Company prior to the exercise of
the Warrant.

7.   WARRANTHOLDER REGISTRY.
     -----------------------

     The Company shall maintain a registry showing the name and address of the
registered holder of this Warrant Agreement.

8.   ADJUSTMENT RIGHTS.
     ------------------

     The purchase price per share and the number of shares of Preferred Stock
purchasable hereunder are subject to adjustment, as follows:

     (a) Merger and Sale of Assets. If at any time there shall be a capital
         -------------------------
reorganization of the shares of the Company's stock (other than a combination,
reclassification, exchange or subdivision of shares otherwise provided for
herein), or a merger or consolidation of the Company with or into another
corporation whether or not the Company is the surviving corporation, or the sale
of all or substantially all of the Company's properties and assets to any other
person (hereinafter referred to as a "Merger Event"), then, as a part of such
Merger Event, lawful provision shall be made so that the Warrantholder shall
thereafter be entitled to receive, upon exercise of the Warrant, the number of
shares of preferred stock or other securities of the successor corporation
resulting from such Merger Event, equivalent in value to that which would have
been issuable if Warrantholder had exercised this Warrant immediately prior to
the Merger Event. In any such case, appropriate adjustment (as determined in
good faith by the Company's Board of Directors) shall be made in the application
of the provisions of this Warrant Agreement with respect to the rights and
interest of the Warrantholder after the Merger Event to the end that the
provisions of this Warrant Agreement (including adjustments of the Exercise
Price and number of shares of Preferred Stock purchasable) shall be applicable
to the greatest extent possible.

     (b) Reclassification of Shares. If the Company at any time shall, by
         --------------------------
combination, reclassification, exchange or subdivision of securities or
otherwise, change any of the securities as to which purchase rights under this
Warrant Agreement exist into the same or a different number of securities of any
other class or classes, this Warrant Agreement shall thereafter represent the
right to acquire such number and kind of securities as would have been issuable
as the result of such change with respect to the securities which were subject
to the purchase rights under this Warrant Agreement immediately prior to such
combination, reclassification, exchange, subdivision or other change.

     (c) Subdivision or Combination of Shares. If the Company at any time shall
         ------------------------------------
combine or subdivide its Preferred Stock, the Exercise Price shall be
proportionately decreased in the case of a subdivision, or proportionately
increased in the case of a combination.

     (d) Stock Dividends. If the Company at any time shall pay a dividend
         ---------------
payable in, or make any other distribution (except any distribution specifically
provided for in the foregoing subsections (a) or (b)) of the Company's stock,
then the Exercise Price shall be adjusted, from and after the record date of
such dividend or distribution, to that price determined by multiplying the
Exercise Price in effect immediately prior to such record date by a fraction (i)
the numerator of which shall be the total number of all shares of the Company's
stock outstanding immediately prior to such dividend or distribution, and (ii)
the denominator of which shall be the total number of all shares of the
Company's stock outstanding immediately after such dividend or distribution. The
Warrantholder shall thereafter be entitled to purchase, at the Exercise Price
resulting from such adjustment, the number of shares of Preferred Stock
(calculated to the nearest whole share) obtained by multiplying the Exercise
Price in effect immediately prior to such adjustment by the number of shares of
Preferred Stock issuable upon the exercise hereof immediately prior to such
adjustment and dividing the *product thereof by the Exercise Price resulting
from such adjustment.

                                       4
<PAGE>

     (e) Antidilution Rights. Additional antidilution rights applicable to the
         -------------------
Preferred Stock purchasable hereunder are as set forth in the Company's
Certificate of Incorporation, as amended through the Effective Date, a true and
complete copy of which is attached hereto as Exhibit A (the "Charter"). The
Company shall promptly provide the Warrantholder with any restatement,
amendment, modification or waiver of the Charter. The Preferred Stock
purchasable hereunder shall have the benefit of the same antidilution rights
applicable to such Preferred Stock as designated in the Company's Charter, and
the Company shall provide Warrantholder with all notices and information at the
time and to the extent it is required to do so to the holders of the Preferred
Stock

     (f) Notice of Adjustments. If-. (i) the Company shall declare any dividend
         ---------------------
or distribution upon its stock, whether in cash, property, stock or other
securities; (ii) the Company shall offer for subscription prorata to the holders
of any class of its Preferred or other convertible stock any additional shares
of stock of any class or other rights; (iii) there shall be any Merger Event;
(iv) there shall be an'ini0al public offering; or (v) there shall be any
voluntary dissolution, liquidation or winding up of the Company; then, in
connection with each such event, the Company shall send to the Warrantholder (A)
at least twenty (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, subscription rights (specifying the date on which the holders of
Preferred Stock shall be entitled thereto) or for determining rights to vote in
respect of such Merger Event, dissolution, liquidation or winding up; (B) in the
case of any such Merger Event, dissolution, liquidation or winding up, at least
twenty (20) days' prior written notice of the date when the same shall take
place (and specifying the date on which the holders of Preferred Stock shall be
entitled to exchange their Preferred Stock for securities or other property
deliverable upon such Merger Event, dissolution, liquidation or winding up); and
(C) in the case of a public offering, the Company shall give the Warrantholder
at least twenty (20) days written notice prior to the effective date thereof.

     Each such written notice shall set forth, in reasonable detail, (1) the
event requiring the adjustment, (ii) the amount of the adjustment, (iii) the
method by which such adjustment was calculated, (iv) the Exercise Price, and (v)
the number of shares subject to purchase hereunder after giving effect to such
adjustment, and shall be given by first class mail, postage prepaid, addressed
to the Warrantholder, at the address as shown on the books of the Company.

     (g) Timely Notice. Failure to timely provide such notice required by
         -------------
subsection (g) above shall entitle Warrantholder to retain the benefit of the
applicable notice period notwithstanding anything to the contrary contained in
any insufficient notice received by Warrantholder. The notice period shall begin
on the date Warrantholder actually receives a written notice containing all the
information specified above.

9.   REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE COMPANY.
     ---------------------------------------------------------

     (a) Reservation of Preferred Stock. The Preferred Stock issuable upon
         ------------------------------
exercise of the Warrantholder's rights shall be duly and validly reserved and,
when issued in accordance with the provisions of this Warrant Agreement, will be
validly issued, fully paid and non-assessable, and will be free of any taxes,
liens, charges or encumbrances of any nature whatsoever; provided, however, that
the Preferred Stock issuable pursuant to this Warrant Agreement may be subject
to restrictions on transfer under state and/or Federal securities laws. The
Company has made available to the Warrantholder true, correct and complete
copies of its Charter and Bylaws, as amended. The issuance of certificates for
shares of Preferred Stock upon exercise of the Warrant Agreement shall be made
without charge to the Warrantholder for any issuance tax in respect thereof, or
other cost incurred by the Company in connection with such exercise and the
related issuance of shares of Preferred Stock. The Company shall not be required
to pay any tax which may be payable in respect of any transfer involved and the
issuance and delivery of any certificate in a name other than that of the
Warrantholder.

     (b) Due Authority. The execution and delivery by the Company of this
         -------------
Warrant Agreement and the performance of all obligations of the Company
hereunder, including the issuance to Warrantholder of the right to, acquire the
shares of Preferred Stock, have been duly authorized by all necessary corporate
action on the part of the Company, and the Loans and this Warrant Agreement are

                                       5
<PAGE>

not inconsistent with the Company's Charter or Bylaws, do not contravene any law
or governmental rule, regulation or order applicable to it, do not and will not
contravene any provision of, or constitute a default under, any indenture,
mortgage, contract or other instrument to which it is a party or by which it is
bound, and the Loans and this Warrant Agreement constitute legal, valid and
binding agreements of the Company, enforceable in accordance with their
respective terms.

     (c) Consents and Approvals. No consent or approval of, giving of notice to,
         ----------------------
registration with, or taking ,of any other action in respect of any state,
Federal or other governmental authority or agency is. required with respect to
the execution, delivery and performance by the Company of its obligations under
this Warrant Agreement, except for the filing of notices pursuant to Regulation
D under the 1933 Act and any filing required by applicable state securities law,
which filings will be effective by the time required thereby.

     (d) Issued Securities. All issued and outstanding shares of Common Stock,
         -----------------
Preferred Stock or any other securities of the Company have been duly authorized
and validly issued and are fully paid and nonassessable.  All outstanding shares
of Common Stock, Preferred Stock and any other securities were issued in full
compliance with all Federal and state securities laws. In addition:

(i)  The authorized capital of the Company consists of (A) 20,000,000 shares of
     Common Stock, of which 7,430,000 shares are issued and outstanding, and (B)
     8,570,000shares of preferred stock, of which 8,570,000 shares are issued
     and outstanding and are convertible into one share of Common Stock at $1.05
     per share.

(ii) The Company has reserved (A) 4,000,000 shares of Common Stock for issuance
     under its Stock Option Plan. Approximately 2,095,000 shares have been
     granted subject to certain conditions, at prices ranging from $0.50 to
     $0.75 per share.

Warrants were issued to Comdisco Inc on June 8, 1999 to subscribe to and
purchase 91,429 fully paid and non-assessable. shares of the Company's Series A
Convertible Preferred Stock at a purchase price of $1.05 per share.  There are
no other options, warrants, conversion privileges or other rights presently
outstanding to purchase or otherwise acquire any authorized but unissued shares
of the Company's capital stock or other securities of the Company.

     (e) Other Commitments to Register Securities. Except for Series A Preferred
         ----------------------------------------
stockholders, the Company is not, pursuant to the terms of any other agreement
currently in existence, under any obligation to register under the 1933 Act any
of its presently outstanding securities or any of its securities which may
hereafter be issued.

     (f) Exempt Transaction. Subject to the accuracy of the Warrantholder's
         ------------------
representations in Section 10 hereof, the issuance of the Preferred Stock upon
exercise of this Warrant will constitute a transaction exempt from (i) the
registration requirements of Section 5 of the 1933 Act, in reliance upon Section
4(2) thereof, and (ii) the qualification requirements of the applicable state
securities laws.

     (g) Compliance with Rule 144. At the written request of the Warrantholder,
         ------------------------
who proposes to sell Preferred Stock issuable upon the exercise of the Warrant
in compliance with Rule 144 promulgated by the Securities and Exchange
Commission, the Company shall furnish to the Warrantholder, within ten days
after receipt of such request, a written statement confirming the Company's
compliance with the filing requirements of the Securities and Exchange
Commission as set forth in such Rule, as such Rule may be amended from time to
time.

10.  REPRESENTATIONS AND COVENANTS OF THE WARRANTHOLDER.
     ---------------------------------------------------

     This Warrant Agreement has been entered into by the Company in reliance
upon the following representations and covenants of the Warrantholder

                                       6
<PAGE>

     (a) Investment Purpose. The right to acquire Preferred Stock or the
         ------------------
Preferred Stock issuable upon exercise of the Warrantholder's rights contained
herein will be acquired for investment and not with a view to the sale or
distribution of any part thereof, and the Warrantholder has no present intention
of selling or engaging in any public distribution of the same except pursuant to
a registration or exemption.

     (b) Private Issue. The Warrantholder understands (I) that the Preferred
         -------------
Stock issuable upon exercise of this Warrant is not registered under the 1933
Act or qualified under applicable state securities laws on the ground that the
issuance contemplated by this Warrant Agreement will be exempt from the
registration and qualifications requirements thereof, and (ii) that the
Company's reliance on such exemption is predicated on the representations set
forth In this Section 10.

     (c) Disposition of Warrantholder's Rights. In no event will the
         -------------------------------------
Warrantholder make a disposition of any of its rights to acquire Preferred Stock
or Preferred Stock issuable upon exercise of such rights unless and until (I) ft
shall have notified the Company of the proposed disposition, and (ii) if
requested by the Company, it shall have furnished the Company with an opinion of
counsel (which counsel may either be inside or outside counsel to the
Warrantholder) satisfactory to the Company and its counsel to the effect that
(A) appropriate action necessary for compliance with the 1933 Act has been
taken, or (B) an exemption from the registration requirements of the 1933 Act is
available. Notwithstanding the foregoing, the restrictions imposed upon the
transferability of any of its rights to acquire Preferred Stock or Preferred
Stock issuable on the exercise of such rights do not apply to transfers from the
beneficial owner of any of the aforementioned securities to its nominee or from
such nominee to its beneficial owner, and shall terminate as to any particular
share of Preferred Stock when (1) such security shall have been effectively
registered under the 1933 Act and sold by the holder thereof in accordance with
such registration or (2) such security shall have been sold without registration
in compliance with Rule 144 under the 1933 Act, or (3) a letter shall have been
issued to the Warrantholder at its request by the staff of the Securities and
Exchange Commission or a ruling shall have been issued to the Warrantholder at
its request by such Commission stating that no action shall be recommended by
such staff or taken by such Commission, as the case may be, if such security is
transferred without registration under the 1933 Act in accordance with the
conditions set forth in such letter or ruling and such letter or ruling
specifies that no subsequent restrictions on transfer are required. Whenever the
restrictions imposed hereunder shall terminate, as hereinabove provided, the
Warrantholder or holder of a share of Preferred Stock then outstanding as to
which such restiic6ons have terminated shall be entitled to receive from the
Company, without expense to such holder, one or more new certificates for the
Warrant or for such shares of Preferred Stock not bearing any restrictive
legend.

     (d) Financial Risk. The Warrantholder has such knowledge and experience in
         --------------
financial and business matters as to be capable of evaluating the merits and
risks of its investment, and has the ability to bear the economic risks of its
investment. In addition, Warrantholder has an opportunity to make inquiries to
the Company regarding its business and financial affairs and such inquiries have
been answered to Warrantholder's satisfaction.

     (e) Risk of No Registration. The Warrantholder understands that if the
         -----------------------
Company does not register with the Securities and Exchange Commission pursuant
to Section 12 of the 1934 Act (the "1934 Act), or file reports pursuant to
Section 15(d), of the 1934 Act, or if a registration statement covering the
securities under the 1933 Act is not in effect when it desires to sell (I) the
rights to purchase Preferred Stock pursuant to this Warrant Agreement, or (ii)
the Preferred Stock issuable upon exercise of the right to -purchase, it may be
required to hold such securities for an indefinite period. The Warrantholder
also understands that any sale of its rights of the Warrantholder to purchase
Preferred Stock or Preferred Stock which might be made by it in reliance upon
Rule 144 under the 1933 Act may be made only in accordance with the terms and
conditions of that Rule.

     (f) Accredited Investor. Warrantholder is an "accredited investor" within
         -------------------
the meaning of the Securities and Exchange Rule 501 of Regulation D, as
presently in effect.

                                       7
<PAGE>

11.  TRANSFERS.
     ----------

     Subject to the terms and conditions contained in Section 10 hereof, this
Warrant Agreement and all rights hereunder are transferable in whole or in part
by the Warrantholder and any successor transferee, provided, however, in no
event shall the number of transfers of the rights and interests in all of the
Warrants exceed three (3) transfers. The transfer shall be recorded on the books
of the Company upon receipt by the Company of a notice of transfer in the form
attached hereto as Exhibit III (the 'Transfer Notice"), at its principal offices
and the payment to the Company of all transfer taxes and other governmental
charges imposed on such transfer. Such transfers will be limited to persons or
entities associated with Warrantholder.

12.  MISCELLANEOUS.
     --------------

     (a) Effective Date. The provisions of this Warrant Agreement shall be
         --------------
construed and shall be given effect in all respects as if it had been executed
and delivered by the Company on the date hereof. This Warrant Agreement shall be
binding upon any successors or assigns of the Company.

     (b) Attorney's Fees. In any litigation, arbitration or court proceeding
         ---------------
between the Company and the Warrantholder relating hereto, the prevailing party
shall be entitled to attorneys' fees and expenses and all costs of proceedings
incurred in enforcing this Warrant Agreement.

     (c) Governing Law. This Warrant Agreement shall be governed by and
         -------------
construed for all purposes under and in accordance with the laws of the State of
Illinois.

     (d) Counterparts. This Warrant Agreement may be executed in two or more
         ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument

     (e) Notices. Any notice required or permitted hereunder shall be given in
writing and shall be deemed effectively given upon personal delivery, facsimile
transmission (provided that the original is sent by personal delivery or mail as
hereinafter set forth) or seven (7) days after deposit in the United States
mail, by registered or certified mail, addressed (i) to the Warrantholder at
6111 North River Road, Rosemont, Illinois 60018, Attention: Venture Lease
Administration, cc: Legal Department, Attention.: General Counsel, (and/or, if
by facsimile, (847) 518-5465 and (847)518-5088, and (ii) to the Company at 350
N. LaSalle St. Suite 1000, Chicago, IL 60610, Attention: Chief Financial Officer
(and/or if by facsimile, (312) 832-9351 or at such other address as any such
party may subsequently designate by written notice to the other party.

     (f) Remedies. In the event of any default hereunder, the non-defaulting
         --------
party may proceed to protect and enforce Its rights either by suit in equity
and/or by action at law, including but not limited to an action for damages as a
result of any such default, and/or an action for specific performance for any
default where Warrantholder will not have an adequate remedy at law and where
damages will not be readily ascertainable. The Company expressly agrees that it
shall not oppose an application by the Warrantholder or any other person
entitled to the benefit of this Agreement requiring specific performance of any
or all provisions hereof or enjoining the Company from continuing to commit any
such breach of this Agreement.

     (g) No Impairment of Rights. The Company will not, by amendment of its
         -----------------------
Charter or through any other means, avoid or seek to avoid the observance or
performance of any of the terms of this Warrant, but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
actions as may be necessary or appropriate in order to protect the rights of the
Warrantholder against impairment.

                                       8
<PAGE>

     (h) Survival. The representations, warranties, covenants and conditions of
         --------
the respective parties contained herein or made pursuant to this Warrant
Agreement shall survive the execution and delivery of this Warrant Agreement.

     (i) Severability. In the event any one or more of the provisions of this
         ------------
Warrant Agreement shall for any reason be held invalid, illegal or
unenforceable, the remaining provisions of this Warrant Agreement shall be
unimpaired. and the invalid, illegal or unenforceable provision shall be
replaced by a mutually acceptable valid, legal and enforceable provision, which
comes closest to the intention of the parties underlying the invalid, illegal or
unenforceable provision.

     (j) Amendments. Any provision of this Warrant Agreement may be amended by a
         ----------
written instrument signed by the Company and by the Warrantholder.

     (k) Additional Documents. The Company, upon execution of this Warrant
         --------------------
Agreement, shall provide the Warrantholder with certified resolutions with
respect to the representations, warranties and covenants set forth in
subparagraphs (a) through (d) of Section 9 above. The Company shall also supply
such other documents as the Warrantholder may from time to time reasonably
request.

     IN WITNESS WHEREOF, the parties hereto have caused this Warrant Agreement
to be executed by its officers thereunto duly authorized as of the Effective
Date.

                              Company: COMMERX, INC.

                              By:   /s/ Nick Stojka

                              Title:  EVP and Director

                              Warrantholder: COMDISCO, INC.

                              By:   /s/ James Labe

                              Title:  President, Comdisco Ventures Division

                                       9
<PAGE>

                                   EXHIBIT I

                              NOTICE OF EXERCISE

To:_______________________________

(1)  The undersigned Warrantholder hereby elects to purchase _____ shares of the
     Series _____ Preferred Stock of __________, pursuant to the terms of the
     Warrant Agreement dated the _____ day of __________, 19_____ (the "Warrant
     Agreement") between ____________________ and the Warrantholder, and tenders
     herewith payment of the purchase price for such shares in full, together
     with all applicable transfer taxes, if any.

(2)  In exercising its rights to purchase the Series _______ Preferred Stock of
     ___________________, the undersigned hereby confirms and acknowledges the
     investment representations and warranties made in Section 10 of the Warrant
     Agreement

(3)  Please issue a certificate or certificates representing said shares of
     Series _______ Preferred Stock in the name of the undersigned or in such
     other name as is specified below.

____________________________
(Name)

____________________________
(Address)

Warrantholder: COMDISCO, INC.

By:_________________________

Title:______________________

Date:_______________________

                                       10
<PAGE>

                                   EXHIBIT II

                           ACKNOWLEDGMENT OF EXERCISE

     The undersigned ________________, hereby acknowledge receipt of the "Notice
of Exercise" from Comdisco, Inc., to purchase _____ shares of the Series ____
Preferred Stock of ______________, pursuant to the terms of the Warrant
Agreement, and further acknowledges that __________ shares remain subject to
purchase under the terms of the Warrant Agreement.

                                    Company:

                                    By:_____________________

                                    Title:__________________

                                    Date:___________________

                                       11
<PAGE>

                                  EXHIBIT III

                                TRANSFER NOTICE

(To transfer or assign the foregoing Warrant Agreement execute this form and
supply required information. Do not use this form to purchase shares.)

     FOR VALUE RECEIVED, the foregoing Warrant Agreement and all rights
evidenced thereby are hereby transferred and assigned to

_______________________________
(Please Print)

whose address is____________________________________

____________________________________________________

                    Dated: _________________________

                    Holders Signature:______________

                    Holders Address:________________

                    ________________________________

     Signature Guaranteed:__________________________

NOTE: The signature to this Transfer Notice must correspond with the name as it
      appears on the face of the Warrant Agreement without alteration or
      enlargement or any change whatever. Officers of corporations and those
      acting in a fiduciary or other representative capacity should file proper
      evidence of authority to assign the foregoing Warrant Agreement

                                       12

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