Document:

<PAGE>

                                                                   Exhibit 4.5.1

     This Amendment (the "Amendment") to that certain Preferred Stock Purchase
                          ---------
Agreement dated as of February 3, 1997 (the "Agreement"), by and among Intek
                                             ---------
Information, Inc., a Delaware corporation (the "Company"), and The Beacon Group
                                                -------
III - Focus Value Fund, L.P., a Delaware limited partnership, Squam Lake
Investors II, L.P., a Delaware limited partnership, and Bain & Company, Inc., a
Massachusetts corporation (collectively the "Investors") is made effective upon
                                             ---------
the closing of the Company's IPO (as defined below).

                              W I T N E S S E T H
                              - - - - - - - - - -

     WHEREAS, the Company and the Investors are each parties to the Agreement;
and

     WHEREAS, the Company and the Investors desire to amend certain provisions
of the Agreement.

     NOW THEREFORE, the parties hereto hereby agree as follows:

     1.   Definition.
          ----------

     As used in this Amendment, the following term shall have the meaning
ascribed to it below:

     "IPO" means the initial underwritten offering pursuant to which the
     Company's common stock, $.0001 par value per share, becomes registered
     under Section 12 of the Securities Exchange Act of 1934, as amended.

     2.   Termination of Sections of the Agreement.
          ----------------------------------------

     The following sections of the Agreement shall be of no further force and
effect:

     "4.6 (a) Access to Records."
              -----------------
     "4.6 (h) Directors' and Officers' Insurance."
              ----------------------------------

     3.   Modification of Section 8.4.
          ---------------------------

     The following language shall be added to the end of the second sentence of
     Section 8.4 of the Agreement:

     "except a holder who shall have acquired such Conversion Shares pursuant to
     a registration statement under the Securities Act of 1933, as amended,
     pursuant to Rule 144 promulgated under the Securities Act, on a national
     securities exchange or the National Association of Securities Dealers
     Automated Quotation System or similar organization, or in any other
     transaction not constituting a 'private offering' under the Securities Act
     as such term is commonly understood."
<PAGE>

     4.   Miscellaneous.
          -------------

     (a)  This Amendment shall be binding upon and inure to the befit of and be
          enforceable by the parties hereto and the respective successors,
          personal representatives and assigns of the parties hereto.

     (b)  This Amendment shall be construed and enforced in accordance with and
          governed by the laws of the State of New York without giving effect to
          the conflicts of law principles thereof.

     (c)  This Amendment may be executed in any number of counterparts, each of
          which shall be an original, but all of which together shall constitute
          one instrument.

     IN WITNESS WHEREOF, the undersigned have executed this Amendment to become
effective as set forth above.

                    INTEK INFORMATION INC.

                    By: /s/ Timothy C. O'Crowley
                        ------------------------
                    Timothy C. O'Crowley
                    Chief Executive Officer and President

                    THE BEACON GROUP III-FOCUS VALUE FUND, L.P.

                    By: Beacon Focus Value Investors, LLC, its general partner
                    By: Focus Value GP, Inc., its member

                    By: /s/ Eric Wlkinson
                        -----------------
                    Name: Eric Wilkinson
                    Title:  Managing Director

                    BAIN & COMPANY, INC.

                    By: /s/ Colin F. Anderson
                        ---------------------
                    Colin F.Anderson
                    Finance Director

<PAGE>

                    SQUAM LAKE INVESTORS II, L.P.

                    By:  GPI, Inc., its managing general partner

                    By:  /s/ Colin F. Anderson
                         ---------------------
                    Colin F. Anderson
                    President of GPI, Inc.<PAGE>

                                                                   Exhibit 4.6.1

     This Amendment (the "Amendment") to that certain Purchase Agreement dated
                          ---------
as of December 22, 1997 (the "Agreement"), by and between A Information,
                              ---------
Inc., a Delaware corporation (the "Company"), and The Beacon Group III - Focus
                                   -------
Value Fund, L.P., a Delaware limited partnership ("Beacon"), is made effective
                                                   ------
upon the closing of the Company's IPO (as defined below).

                              W I T N E S S E T H
                              - - - - - - - - - -

     WHEREAS, the Company and Beacon are each parties to the Agreement; and

     WHEREAS, the Company and Beacon desire to amend a provision of the
Agreement.

     NOW THEREFORE, the parties hereto hereby agree as follows:

     1.   Definition.
          ----------

     As used in this Amendment, the following term shall have the meaning
     ascribed to it below:

     "IPO" means the initial underwritten offering pursuant to which the
     Company's common stock, $.0001 par value per share, becomes registered
     under Section 12 of the Securities Exchange Act of 1934, as amended.

     2.   Modification of Section 7.4.
          ---------------------------

     The following language shall be added to the end of the second sentence of
     Section 7.4 of the Agreement:

     "except a holder who shall have acquired such Conversion Shares pursuant to
     a registration statement under the Securities Act of 1933, as amended,
     pursuant to Rule 144 promulgated under the Securities Act, on a national
     securities exchange or the National Association of Securities Dealers
     Automated Quotation System or similar organization, or in any other
     transaction not constituting a 'private offering' under the Securities Act
     as such term is commonly understood."

     3.   Miscellaneous.
          -------------

     (a)  This Amendment shall be binding upon and inure to the befit of and be
          enforceable by the parties hereto and the respective successors,
          personal representatives and assigns of the parties hereto.

     (b)  This Amendment shall be construed and enforced in accordance with and
          governed by the laws of the State of New York without giving effect to
          the conflicts of law principles thereof.
<PAGE>

     (c)  This Amendment may be executed in any number of counterparts, each of
          which shall be an original, but all of which together shall constitute
          one instrument.

     IN WITNESS WHEREOF, the undersigned have executed this Amendment to become
effective as set forth above.

                    INTEK INFORMATION INC.

                    By: /s/ Timothy C. O'Crowley
                        ---------------------------------------------
                        Timothy C. O'Crowley
                        Chief Executive Officer and President

                    THE BEACON GROUP III-FOCUS VALUE FUND, L.P.

                    By: Beacon Focus Value Investors, LLC, its general partner
                    By: Focus Value GP, Inc., its member

                    By: /s/ Eric Wilkinson
                        ---------------------------------------------
                        Name:  Eric Wilkinson
                        Title: Managing Director<PAGE>

                                                                   Exhibit 4.7.1

     This Amendment (the "Amendment") to that certain Series D Preferred Stock
                          ---------
Purchase Agreement dated as of May 7, 1998 (the "Agreement"), by and among Intek
                                                 ---------
Information, Inc., a Delaware corporation (the "Company"), and Conning Insurance
                                                -------
Capital Limited Partnership V, a Delaware limited partnership ("Conning"), The
                                                                -------
Beacon Group III - Focus Value Fund, L.P., a Delaware limited partnership
("Beacon"), and certain other parties who were signatories thereto (collectively
  ------
the "Investors") is made effective upon the closing of the Company's IPO (as
     ---------
defined below).

                              W I T N E S S E T H
                              - - - - - - - - - -

     WHEREAS, the Company and the Investors are each parties to the Agreement;

     WHEREAS, the Agreement may be amended with the written consent of the
Company, Conning and Beacon pursuant to Section 8.7 thereof; and

     WHEREAS, the Company, Conning and Beacon desire to amend certain provisions
of the Agreement.

     NOW THEREFORE, the parties hereto hereby agree as follows:

     1.   Definition.
          ----------

     As used in this Amendment, the following term shall have the meaning
     ascribed to it below:

     "IPO" means the initial underwritten offering pursuant to which the
     Company's common stock, $.0001 par value per share, becomes registered
     under Section 12 of the Securities Exchange Act of 1934, as amended.

     2.   Termination of Sections of the Agreement.
          ----------------------------------------

     The following sections of the Agreement shall be of no further force and
     effect:

     "4.6 (a) Access to Records."
              -----------------
     The last sentence of "4.6 (f) Insurance."
                                   ---------
     "4.6 (h) Directors' and Officers' Insurance."
              ----------------------------------

     3.   Modification of Section 8.4.
          ---------------------------

     The following language shall be added to the end of the second sentence of
     Section 8.4 of the Agreement:

     "except a holder who shall have acquired such Conversion Shares pursuant to
     a registration statement under the Securities Act of 1933, as amended,
     pursuant to Rule 144 promulgated
<PAGE>

     under the Securities Act, on a national securities exchange or the National
     Association of Securities Dealers Automated Quotation System or similar
     organization, or in any other transaction not constituting a 'private
     offering' under the Securities Act as such term is commonly understood."

     4.   Miscellaneous.
          -------------

     (a)  This Amendment shall be binding upon and inure to the befit of and be
          enforceable by the parties hereto and the respective successors,
          personal representatives and assigns of the parties hereto.

     (b)  This Amendment shall be construed and enforced in accordance with and
          governed by the laws of the State of New York without giving effect to
          the conflicts of law principles thereof.

     (c)  This Amendment may be executed in any number of counterparts, each of
          which shall be an original, but all of which together shall constitute
          one instrument.

     IN WITNESS WHEREOF, the undersigned have executed this Amendment to become
effective as set forth above.

                    INTEK INFORMATION INC.

                    By: /s/ Timothy C. O'Crowley
                       ----------------------------------------
                     Timothy C. O'Crowley
                     Chief Executive Officer and President

                    THE BEACON GROUP III-FOCUS VALUE FUND, L.P.

                    By: Beacon Focus Value Investors, LLC, its general partner
                    By: Focus Value GP, Inc., its member

                    By: /s/ Eric Wilkinson
                       -----------------------------------------
                     Name:  Eric Wilkinson
                     Title: Managing Director

                                       2
<PAGE>

                     CONNING INSURANCE CAPITAL LIMITED PARTNERSHIP V

                     By: Conning Investment Partners V, LLC, its General Partner
                     By: Conning & Company, its Member/Manager

                     By: /s/ Gregory L. Batton
                        ----------------------------------------------------
                     Name: Gregory L. Batton
                     Title: Vice President

                                       3

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