Document:

<PAGE>

                                                                    EXHIBIT 10.4

                    INTELLECTUAL PROPERTY SECURITY AGREEMENT

     This Intellectual Property Security Agreement is entered into as of March
28, 2003 by and between COMERICA BANK-CALIFORNIA ("Bank") and PRIORITY
FULFILLMENT SERVICES, INC., a Delaware corporation (collectively, "Grantor").

                                    RECITALS

     A. Bank has agreed to make certain advances of money and to extend certain
financial accommodation to Grantor (the "Loans") in the amounts and manner set
forth in that certain Loan and Security Agreement by and between Bank, Grantor
and Priority Fulfillment Services of Canada, Inc. dated of even date herewith
(as the same may be amended, modified or supplemented from time to time, the
"Loan Agreement"; capitalized terms used herein are used as defined in the Loan
Agreement).

     B. Bank is willing to make the Loans to Grantor, but only upon the
condition, among others, that Grantor shall grant to Bank a security interest in
certain Copyrights, Trademarks and Patents to secure the obligations of Grantor
under the Loan Agreement.

     C. Pursuant to the terms of the Loan Agreement, Grantor has granted to Bank
a security interest in all of Grantor's right, title and interest, whether
presently existing or hereafter acquired, in, to and under all of the
Collateral.

     NOW, THEREFORE, for good and valuable consideration, receipt of which is
hereby acknowledged, and intending to be legally bound, as collateral security
for the prompt and complete payment when due of its obligations under the Loan
Agreement and all other agreements now existing or hereafter arising between
Grantor and Bank, Grantor hereby represents, warrants, covenants and agrees as
follows:

                                    AGREEMENT

     To secure its obligations under the Loan Agreement and under any other
agreement now existing or hereafter arising between Bank and Grantor, Grantor
grants and pledges to Bank a security interest in all of Grantor's right, title
and interest in, to and under its Intellectual Property Collateral (including
without limitation those Copyrights, Patents and Trademarks listed on Schedules
A, B and C hereto), and including without limitation all proceeds thereof (such
as, by way of example but not by way of limitation, license royalties and
proceeds of infringement suits), the right to sue for past, present and future
infringements, all rights corresponding thereto throughout the world and all
re-issues, divisions continuations, renewals, extensions and
continuations-in-part thereof.

     This security interest is granted in conjunction with the security interest
granted to Bank under the Loan Agreement. The rights and remedies of Bank with
respect to the security interest granted hereby are in addition to those set
forth in the Loan Agreement and the other Loan Documents, and those which are
now or hereafter available to Bank as a matter of law or equity. Each right,
power and remedy of Bank provided for herein or in the Loan Agreement or any of
the Loan Documents, or now or hereafter existing at law or in equity shall be
cumulative and concurrent and shall be in addition to every right, power or
remedy provided for herein and the exercise by Bank of any one or more of the
rights, powers or remedies provided for in this Intellectual Property Security
Agreement, the Loan Agreement or any of the other Loan Documents, or now or
hereafter existing at law or in equity, shall not preclude the simultaneous or
later exercise by any person, including Bank, of any or all other rights, powers
or remedies.

     Grantor represents and warrants that Exhibits A, B, and C attached hereto
set forth any and all intellectual property rights in connection to which
Grantor has registered or filed an application with either the United States
Patent and Trademark Office or the United States Copyright Office, as
applicable.

<PAGE>

     IN WITNESS WHEREOF, the parties have caused this Intellectual Property
Security Agreement to be duly executed by its officers thereunto duly authorized
as of the first date written above.

                                            GRANTOR:

Address of Grantor:                         PRIORITY FULFILLMENT SERVICES, INC.

500 N. Central Expressway, 5th Floor
Plano, Texas 75074                          By:
Attn:  Thomas J. Madden                        ---------------------------------
                                            Title:
                                                  ------------------------------

                                            BANK:
                                                 -------------------------------

                                            COMERICA BANK-CALIFORNIA
Address of Bank:

Comerica Bank-California                    By:
Commercial Loan Services Department               ------------------------------
9920 S. La Cienega Blvd., 14th Floor        Title:
Inglewood, CA 90301                               ------------------------------

Attn:  Loan Documentation

<PAGE>

                                    EXHIBIT A

                                   Copyrights

<Table>
<Caption>
                                              Registration       Registration
                                                 Number              Date
                                              ------------       ------------
Description
-----------
<S>                                           <C>                <C>
NONE
</Table>

<PAGE>

                                    EXHIBIT B

                                     Patents

<Table>
<Caption>
                                              Registration/      Registration/
                                               Application        Application
Description                                       Number              Date
-----------                                   ------------       -------------
<S>                                           <C>                <C>
NONE
</Table>

<PAGE>

                                    EXHIBIT C

                                   Trademarks

<Table>
<Caption>
REGISTRATIONS

MARK                         REGISTRATION NUMBER          DATE REGISTERED
----                         -------------------          ---------------
<S>                          <C>                          <C>
PFSWEB                       2,345,487                    4/25/00

FROM THE CLICK               2,643,270                    10/31/00
OF THE MOUSE TO
THE KNOCK AT THE
HOUSE

ENTENTEWEB                   2,656,989                    12/3/02
</Table>

<Table>
<Caption>
PENDING APPLICATIONS

MARK                         SERIAL NUMBER                DATE FILED
----                         -------------                ----------
<S>                          <C>                          <C>
THE EVOLUTION                76/271,303                   6/14/01
OF OUTSOURCING

PFSWEB AND DESIGN            76/271,304                   6/14/01

ENTENTEREPORT                76/405,570                   5/10/02

ENTENTE SUITE                76/079,094                   6/28/00

ENTENTEDIRECT                76/079,092                   6/28/00

ENTENTEMESSAGE               76/079,093                   6/28/00
</Table><PAGE>
                                                              EXECUTION DOCUMENT

                                                                    EXHIBIT 10.5

                                   AMENDMENT 2
                                       TO
     AMENDED AND RESTATEDPLATINUM PLAN AGREEMENT (WITH INVOICE DISCOUNTING)

         This Amendment 2 ("Amendment") dated March 28, 2003 is made to the
AMENDED AND RESTATED PLATINUM PLAN AGREEMENT (WITH INVOICE DISCOUNTING) by and
among IBM BELGIUM FINANCIAL SERVICES COMPANY S.A., with a registered number of
R.C. Brussels 451.673 with an address of Avenue du Bourget 42 Brussels 1130 VAT
BE 424300467 ("IBM GF" or "US"), SUPPLIERS DISTRIBUTORS S.A. with a registered
number of RC Liege 208795 with an address of Rue Louis Bleriot 5, B-4460
Grace-Hollogne, Belgium ("SDSA"), and BUSINESS SUPPLIES DISTRIBUTORS EUROPE BV a
Netherlands company registered in Maastricht with a Netherlands trade
registration number of HR Maastricht 14062763 with an address of Dalderhaag 13,
6136 Sittard, The Netherlands ("BSDE") (SDSA and BSDE collectively, "YOU"), PFS
WEB B.V a Netherlands company registered in Maastricht under the number 17109541
with a Belgian trade registration number of R.C. Liege 204162 ("PFS WEB B.V.")
(SDSA, BSDE and PFS Web B.V. collectively, the "LOAN PARTIES")

                                    RECITALS:

         A. The Loan Parties and IBM GF have entered into that certain AMENDED
AND RESTATED PLATINUM PLAN AGREEMENT (WITH INVOICE DISCOUNTING) dated as of
March 29, 2002 (as amended and modified from time to time, the "Agreement");

         B. The Loan Parties have requested and IBM GF has agreed to extend the
Agreement for twelve months;

         C. The Loan Parties agree to certain financial covenants revisions by
IBM GF; and

         D. The parties have agreed to modify the Agreement as more specifically
set forth below, upon and subject to the terms and conditions set forth herein.

                                    AGREEMENT

         NOW THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, IBM GF and the Loan Parties hereby agree as follows:

SECTION 1. DEFINITIONS. All capitalized terms not otherwise defined herein shall
have the respective meanings set forth in the Agreement.

SECTION 2. AMENDMENT. Subject to Section 4 hereof, the Agreement is hereby
amended as follows:

         A. The Agreement is hereby amended as follows:

         (a) Section 1.1 is hereby amended by adding the following definition:

                  "TERMINATION DATE": means March 29, 2004 or such other date as
                  to which IBM GF and the Loan Parties may agree from time to
                  time.

         (b) Section 8.2.7 is hereby amended by deleting it in its entirety and
substituting, in lieu thereof, the following:

                  " FINANCIAL COVENANTS

                  You agree to comply with the Financial Covenants, if any, set
                  out in the relevant supplements or the Schedule. You also
                  agree that you will not, without our consent, make any of the
                  following payments ("Restricted Payments") without our prior
                  written consent (i) declare or pay any dividend

                                   Page 1 of 4
<PAGE>

                                                              EXECUTION DOCUMENT

                  (other than dividends payable solely in common stock of BSDE
                  and/or SDSA and the aggregate amount of such dividends under
                  this Agreement and the AIF does not cause you or Holdings to
                  violate such Financial Covenants or exceed Six Hundred
                  Thousand Dollars ($600,000), without duplication, to be paid
                  in fiscal year 2003 for which consent is hereby given) on, or
                  make any payment on account of, or set apart assets for a
                  sinking or other analogous fund for, the purchase, redemption,
                  defeasance, retirement or other acquisition of, any shares of
                  any class of capital stock of BSDE and/or SDSA or any
                  warrants, options or rights to purchase any such capital stock
                  or Equity Interests, whether now or hereafter outstanding, or
                  make any other distribution in respect thereof, either
                  directly or indirectly, whether in cash or property or in
                  obligations of BSDE and/or SDSA ; or (ii) make any optional
                  payment or prepayment on or redemption (including, without
                  limitation, by making payments to a sinking or analogous fund)
                  or repurchase of any Indebtedness (other than the
                  Obligations)), except as permitted by the Amended and Restated
                  Notes Payable Subordination Agreement.

         (c)      Section 10.1 is hereby amended by deleting it in its entirety
                  and substituting, in lieu thereof, the following:

                  "This Agreement will remain in force until the Termination
                  Date. However following the occurrence of an Event of Default
                  that we have not waived in writing we may by notice with
                  immediate effect terminate this Agreement. Upon any
                  termination of this Agreement we shall have all the rights and
                  remedies set out in Clause 9.2 until the complete discharge of
                  all the Loan Parties' obligations to us. Any such termination
                  shall not affect any right we have in relation to the IBM
                  Reimbursables and IBM Receivables or the Receivables Rights
                  and the Supplier Obligations and the Product Rights.

         B. The Schedule to the Agreement is hereby amended by deleting such
Schedule in its entirety and substituting, in lieu thereof, the Schedule
attached hereto. Such new Schedule shall be effective as of the date specified
in the new Schedule. The changes contained in the new Schedule include, without
limitation, the following:

CREDIT LINE:  E12,500,000

VAT RECEIVABLES: Deleted from Collateral Valuation

PREPAYMENT PERCENTAGE: (i) 80% of Eligible IBM Reimbursables (1) and (ii) 80% or
Eligible IBM Receivables

COLLATERAL VALUE OF STOCK-IN-TRADE: (A) 100% of paid for IBM Printing Systems
Division inventory (other than (a) machines which IBM Printing Systems Division
has declared obsolete at least 60 days prior to the date of determination and
(b) service parts) which (i) we have purchased the associated Supplier Invoice
from the Authorised Supplier on or after the Closing Date (ii) purchased
directly from IBM prior to the Closing Date and not subject to retention of
title, provided, however, we have a first priority security interest in such
inventory, (iii) is repurchasable under a repurchase agreement with the
Authorized Supplier and (iv) is secured and managed through a pledge with
Disposition, with coverage percentage acceptable to us (such acceptable
percentage to be determined by us within 60 days of the date this Schedule is
executed)The value to be assigned to such inventory shall be based upon the
Supplier Invoice net of all applicable credit notes.

FINANCIAL COVENANT DEFINITIONS: Changed for net Profit After Tax, Revenue and
Working Capital Turnover.

                                   Page 2 of 4
<PAGE>

FINANCIAL COVENANTS

SDSA and BSDE will be required, on a consolidated basis, to maintain the
following financial ratios, percentages and amounts on a year to date basis as
of the last day of the fiscal period under review (monthly, quarterly and
annually) by us and IBM Credit:

<Table>
<Caption>
            Covenant                                  Covenant Requirement
            -------------------------------           --------------------------
<S>                                                   <C>
(i)         Debt to Tangible Net Worth                Greater than Zero and
                                                      Less than 7.0:1.0

(ii)        Net Profit after Tax to Revenue           Greater than 0.10 percent

(iii)       Working Capital Turnover (WCTO)           Greater than Zero and
                                                      Less than 43.0:1.0
</Table>

PFSweb, Inc. will be required to maintain the following financial ratios,
percentages and amounts as of the last day of the fiscal period under review
(monthly, quarterly and annually) by IBM Credit:

<Table>
<Caption>
                                          Covenant
                   Covenant              Requirement          Date as of
                   --------            --------------         ----------
<S>                                    <C>                    <C>
(i)          Minimum Tangible Net
                     Worth             $18,000,000.00         03/31/03 and beyond
</Table>

SECTION 3. CONDITIONS OF EFFECTIVENESS OF CONSENT AND AMENDMENT. This Amendment
shall have been authorized, executed and delivered by each of the parties hereto
and IBM GF shall have received a copy of a fully executed Amendment.

SECTION 4. REPRESENTATIONS AND WARRANTIES. Each Loan Party makes to IBM GF the
following representations and warranties all of which are material and are made
to induce IBM GF to enter into this Amendment.

SECTION 4.1 ACCURACY AND COMPLETENESS OF WARRANTIES AND REPRESENTATIONS. All
representations made by the Loan Party in the Agreement were true and accurate
and complete in every respect as of the date made, and, as amended by this
Amendment, all representations made by the Loan Party in the Agreement are true,
accurate and complete in every material respect as of the date hereof, and do
not fail to disclose any material fact necessary to make representations not
misleading.

SECTION 4.2 VIOLATION OF OTHER AGREEMENTS. The execution and delivery of this
Amendment and the performance and observance of the covenants to be performed
and observed hereunder do not violate or cause any Loan Party not to be in
compliance with the terms of any agreement to which such Loan Party is a party.

SECTION 4.3 LITIGATION. Except as has been disclosed by the Loan Party to IBM GF
in writing, there is no litigation, proceeding, investigation or labor dispute
pending or threatened against any Loan Party, which, if adversely determined,
would materially adversely affect the Loan Party's ability to perform such Loan
Party's obligations under the Agreement and the other documents, instruments and
agreements executed in connection therewith or pursuant hereto.

SECTION 4.4 ENFORCEABILITY OF AMENDMENT. This Amendment has been duly
authorized, executed and delivered by each Loan Party and is enforceable against
each Loan Party in accordance with its terms.

SECTION 5. RATIFICATION OF AGREEMENT.Except as specifically amended hereby, all
of the provisions of the Agreement shall remain unamended and in full force and
effect. Each Loan Party

                                   Page 3 of 4
<PAGE>

hereby ratifies, confirms and agrees that the Agreement, as amended hereby,
represents a valid and enforceable obligation of such Loan Party, and is not
subject to any claims, offsets or defenses.

SECTION 6. RATIFICATION OF GUARANTY. Each of Holdings, SDI, PFSweb and PFS
hereby ratify and confirm their respective guaranties in favor of IBM GF and
agree that such guaranties remain in full force and effect and that the term
"Liabilities", as used therein include, without limitation the indebtedness
liabilities and obligations of SDSA and BSDE under the Agreement as amended
hereby. SDI hereby ratifies and confirms its Notes Payable Subordination
Agreement executed by SDI on March 29, 2002 and confirms such Notes Payable
Subordination Agreement remains in full force and effect.

SECTION 7. GOVERNING LAW. This Amendment shall be governed by and interpreted in
accordance with the laws which govern the Agreement.

SECTION 8. COUNTERPARTS. This Amendment may be executed in any number of
counterparts, each of which shall be an original and all of which shall
constitute one agreement.

         IN WITNESS WHEREOF, each Loan Party has read this entire Amendment, and
has caused its authorized representatives to execute this Amendment and has
caused its corporate seal, if any, to be affixed hereto as of the date first
written above.

<Table>
<S>                                                         <C>
IBM BELGIUM FINANCIAL SERVICES S.A.                         SUPPLIERS DISTRIBUTORS S.A.

By:                                                         By:
   ---------------------------------------                     ---------------------------------------
Print Name:                                                 Print Name:
           -------------------------------                             -------------------------------
Title:                                                      Title:
      ------------------------------------                        ------------------------------------

BUSINESS SUPPLIES DISTRIBUTORS EUROPE BV                    PFS WEB B.V.

By:                                                         By:
   ---------------------------------------                     ---------------------------------------
Print Name:                                                 Print Name:
           -------------------------------                             -------------------------------
Title:                                                      Title:
      ------------------------------------                        ------------------------------------

THE FOLLOWING PARTIES AGREE TO SECTION 6 AS APPLICABLE TO THEM.

SUPPLIES DISTRIBUTORS, INC.                                 PRIORITY FULFILLMENT SERVICES, INC.

By:                                                         By:
   ---------------------------------------                     ---------------------------------------
Print Name:                                                 Print Name:
           -------------------------------                             -------------------------------
Title:                                                      Title:
      ------------------------------------                        ------------------------------------

BUSINESS SUPPLIES DISTRIBUTORS  HOLDINGS, LLC

By:
   ---------------------------------------
Print Name:
           -------------------------------
Title:
      ------------------------------------
</Table>

                                   Page 4 of 4

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