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                                                                    EXHIBIT 31.2

                     CERTIFICATIONS PURSUANT TO SECTION 302
                        OF THE SARBANES-OXLEY ACT OF 2002

I, Michael W. Nelson, certify that:

               1. I have reviewed this annual report on Form 10-K/A of Click
          Commerce, Inc.;

               2. Based on my knowledge, this report does not contain any untrue
          statement of a material fact or omit to state a material fact or omit
          to state a material fact necessary to make the statements made, in
          light of the circumstances under which such statements were made, not
          misleading with respect to the period covered by this report;

               3. Based on my knowledge, the financial statements, and other
          financial information included in this report, fairly present in all
          material respects the financial condition, results of operations and
          cash flows of the registrant as of, and for, the periods presented in
          this report;

               4. The registrant's other certifying officer and I are
          responsible for establishing and maintaining disclosure controls and
          procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e))
          for the registrant and have:

                    a) Designed such disclosure controls and procedures, or
               caused such disclosure controls and procedures to be designed
               under our supervision, to ensure that material information
               relating to the registrant, including its consolidated
               subsidiaries, is made known to us by others within those
               entities, particularly during the period in which this report is
               being prepared;

                    b) Evaluated the effectiveness of the registrant's
               disclosure controls and procedures and presented in this report
               our conclusions about the effectiveness of the disclosure
               controls and procedures, as of the end of the period of this
               report based on such evaluation; and

                    c) Disclosed in this report any change in the registrant's
               internal control over financial reporting that occurred during
               the registrant's most recent fiscal quarter that has materially
               affected, or is reasonably likely to materially affect, the
               registrant's internal control over financial reporting;

               5. The registrant's other certifying officer and I have
          disclosed, based on our most recent evaluation of internal control
          over financial reporting, to the registrant's auditors and the audit
          committee of the registrant's board of directors:

                    a) All significant deficiencies and material weaknesses in
               the design or operation of internal controls over financial
               reporting which are reasonably likely to adversely affect the
               registrant's ability to record, process, summarize and report
               financial information; and

                    b) Any fraud, whether or not material, that involves
               management or other employees who have a significant role in the
               registrant's internal control over financial reporting.


Date: February 4, 2005                   /s/ Michael W. Nelson
                         -----------------------------------------------------
                                           Michael W. Nelson
                         VICE PRESIDENT, CHIEF FINANCIAL OFFICER AND TREASURER