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                                                                 EXHIBIT 10.4(b)

                      AMENDMENT TO STOCKHOLDERS' AGREEMENT

         THIS AMENDMENT TO STOCKHOLDERS' AGREEMENT (this "Amendment") is made
and entered into as of the 23rd day of December, 1999, by and among INTERLAND,
INC., a Georgia corporation (the "Company"), CREST COMMUNICATIONS PARTNERS,
L.P., a Delaware limited partnership, CREST ENTREPRENEURS FUND, L.P., a Delaware
limited partnership (collectively "Crest"), BOULDER VENTURES III, L.P., a
Delaware limited partnership ("Boulder"), MICROSOFT CORPORATION ("Microsoft")
and the other investors set forth on the signature page hereto (the "Other
Investors"), to amend the terms of that certain Stockholders' Agreement by and
among the Company, Crest, Boulder and the Other Investors dated as of December
2, 1999 (the "Agreement").

         WHEREAS, the Agreement was entered into in connection with Crest's and
Boulder's acquisition of an aggregate of 9,174,313 shares of the Company's
Series A Convertible Participating Preferred Stock, no par value per share (the
"Series A Stock");

         WHEREAS, in connection with Microsoft's acquisition of 2,300,000 shares
of the Series A Stock, Microsoft desires to be entitled and subject to all of
the rights and obligations of the Agreement pari passu with each of Boulder and
Crest;

         WHEREAS, the Company, Crest, Boulder and the Other Investors have
determined and agreed that it would be in the strategic best interest of the
Company to amend the Agreement to include Microsoft as a party to the Agreement.

         NOW, THEREFORE, the parties hereto, in consideration of the foregoing
and other good and valuable consideration, the receipt and sufficiency of which
is hereby acknowledged, agree as follows:

         1.       The Agreement is hereby amended to include Microsoft as a
party thereto as one of the Investor Stockholders for all purposes thereunder,
except that Microsoft's acquisition of the Series A Stock is in addition to the
purchase of 9,174,313 shares of Series A Stock described in the recitals section
of the Agreement. As such, Microsoft shall have all of the rights and
obligations under and pursuant to the Agreement in exactly the same manner and
to the same extent as such rights and obligations are granted to each of the
Investor Stockholders.

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                  IN WITNESS WHEREOF, the undersigned individuals and the
respective duly authorized officer or partner, as the case may be, of each of
the parties hereto have executed this Amendment as of the day and year first
hereinabove set forth.

                                   INTERLAND, INC.

                                   By:        /s/ Ken Kavranovic
                                          -------------------------------------
                                   Name:    Ken Gavranovic
                                   Title:   President and Chief Executive
                                            Officer

                                   THE INVESTOR STOCKHOLDERS

                                   CREST COMMUNICATIONS PARTNERS L.P.

                                   By:      Crest Communications Holdings LLC
                                   Its:     Authorized Representative

                                   By:        /s/ Gregg A. Mockenhaupt
                                          -------------------------------------
                                   Name:    Gregg A. Mockenhaupt
                                   Title:   Managing Director

                                   CREST ENTREPRENEURS FUND L.P.

                                   By:      Crest Communications Holdings LLC
                                   Its:     Authorized Representative

                                   By:         /s/ Gregg A. Mockenhaupt
                                          -------------------------------------
                                   Name:    Gregg A. Mockenhaupt
                                   Title:   Managing Director

                                       2
<PAGE>   3

                                    BOULDER VENTURES III, L.P.

                                    By:           /s/ Andrew E. Jones
                                          -------------------------------------
                                    Name:    Andrew E. Jones
                                    Title:   Partner

                                    BANCBOSTON VENTURES INC.

                                    By:         /s/ M. Scott McCormack
                                          -------------------------------------
                                    Name:    M. Scott McCormack
                                    Title:   Vice President

                                    PRIVATE EQUITY CO-INVEST LTD.

                                    By:      VBTC Management, Ltd.
                                    Its:     Sole Director

                                    By:           /s/ John Arnold
                                          -------------------------------------
                                    Name:    John Arnold
                                    Title:   Chairman

                                    BOULDER VENTURES III (ANNEX), L.P.

                                    By:           /s/ Andrew E. Jones
                                          -------------------------------------
                                    Name:    Andrew E. Jones
                                    Title:   Partner

                                    MICROSOFT CORPORATION

                                    By:           /s/ Bruce Jaffe
                                          -------------------------------------
                                    Name:    Bruce Jaffe
                                    Its:     Director - Corporate Development

                                             /s/ Waldemar Fernandez
                                    -------------------------------------------
                                    Waldemar Fernandez

                                             /s/ Ken Gavranovic
                                    -------------------------------------------
                                    Ken Gavranovic

                                       3<PAGE>   1
                                                                 EXHIBIT 10.4(c)

                      AMENDMENT TO STOCKHOLDERS' AGREEMENT

         THIS AMENDMENT TO STOCKHOLDERS' AGREEMENT (this "Amendment") is made
and entered into as of the 15th day of March, 2000, by and among INTERLAND,
INC., a Georgia corporation (the "Company"), CREST COMMUNICATIONS PARTNERS,
L.P., a Delaware limited partnership, CREST ENTREPRENEURS FUND, L.P., a Delaware
limited partnership (collectively "Crest"), BOULDER VENTURES III, L.P., a
Delaware limited partnership ("Boulder"), MICROSOFT CORPORATION, a Washington
corporation ("Microsoft"), NETWORK SOLUTIONS, INC., a Delaware corporation
("NetSol"), and the other investors set forth on the signature page hereto (the
"Other Investors"), to amend the terms of that certain Stockholders' Agreement
by and among the Company, Crest, Boulder and the Other Investors dated as of
December 2, 1999 (the "Agreement").

         WHEREAS, the Agreement was entered into in connection with Crest's and
Boulder's acquisition of an aggregate of 9,174,313 shares of the Company's
Series A Convertible Participating Preferred Stock, no par value per share (the
"Series A Stock") and amended on December 23, 1999 to include Microsoft as a
party to the Agreement (the "Microsoft Amendment") in connection with its
purchase of 2,300,000 shares of Series A Stock;

         WHEREAS, in connection with NetSol's acquisition of 689,655 shares of
the Series A Stock, NetSol desires to be entitled and subject to all of the
rights and obligations of the Agreement pari passu with each of Boulder, Crest
and Microsoft;

         WHEREAS, the Company, Crest, Boulder and Microsoft and the Other
Investors have determined and agreed that it would be in the strategic best
interest of the Company to amend the Agreement to include NetSol as a party to
the Agreement.

         NOW, THEREFORE, the parties hereto, in consideration of the foregoing
and other good and valuable consideration, the receipt and sufficiency of which
is hereby acknowledged, agree as follows:

         1.       The Agreement is hereby amended to include NetSol as a party
thereto as one of the Investor Stockholders for all purposes thereunder, except
that NetSol's acquisition of the Series A Stock is in addition to the purchase
of 9,174,313 shares of Series A Stock described in the recitals section of the
Agreement and the 2,300,000 shares of Series A Stock described in the Microsoft
Amendment. As such, NetSol shall have all of the rights and obligations under
and pursuant to the Agreement in exactly the same manner and to the same extent
as such rights and obligations are granted to each of the Investor Stockholders.

<PAGE>   2

                  IN WITNESS WHEREOF, the undersigned individuals and the
respective duly authorized officer or partner, as the case may be, of each of
the parties hereto have executed this Amendment as of the day and year first
hereinabove set forth.

                                     INTERLAND, INC.

                                     By:         /s/ Ken Gavranovic
                                            ------------------------------------
                                     Name:  Ken Gavranovic
                                     Title: President and Chief Executive
                                            Officer

                                     THE INVESTOR STOCKHOLDERS

                                     CREST COMMUNICATIONS PARTNERS L.P.

                                     By:    Crest Communications Holdings LLC
                                     Its:   Authorized Representative

                                     By:        Gregg A. Mockenhaupt
                                            ------------------------------------
                                     Name:  Gregg A. Mockenhaupt
                                     Title: Managing Director

                                     CREST ENTREPRENEURS FUND L.P.

                                     By:    Crest Communications Holdings LLC
                                     Its:   Authorized Representative

                                     By:        Gregg A. Mockenhaupt
                                            ------------------------------------
                                     Name:  Gregg A. Mockenhaupt
                                     Title: Managing Director

                                      -2-
<PAGE>   3

                                     BOULDER VENTURES III, L.P.

                                     By:        /s/ Andrew E. Jones
                                            ------------------------------------
                                     Name:  Andrew E. Jones
                                     Title: Partner

                                     BANCBOSTON VENTURES INC.

                                     By:        /s/ M. Scott McCormack
                                            ------------------------------------
                                     Name:  M. Scott McCormack
                                     Title: Vice President

                                     PRIVATE EQUITY CO-INVEST LTD.

                                     By:    VBTC Management, Ltd.
                                     Its:   Sole Director

                                     By:        /s/ Clive Munyard
                                            ------------------------------------
                                     Name:  Clive Munyard
                                     Title: Executive Director

                                     BOULDER VENTURES III (ANNEX), L.P.

                                     By:        /s/ Andrew E. Jones
                                            ------------------------------------
                                     Name:  Andrew E. Jones
                                     Title: Partner

                                     MICROSOFT CORPORATION

                                     By:         /s/ Amar Nehru
                                           -------------------------------------
                                     Name: Amar Nehru
                                     Its:  GM-Corporate Development

                                     NETWORK SOLUTIONS, INC.

                                     By:         /s/ James P. Rutt
                                            ------------------------------------
                                     Name:  James P. Rutt
                                     Its:   Chief Executive Officer

                                      -3-
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                                                 /s/ Waldemar Fernandez
                                           -------------------------------------
                                           Waldemar Fernandez

                                                 /s/ Ken Gavranovic
                                           ------------------------------------
                                           Ken Gavranovic

                                      -4-

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