If MS Office 2000 is installed on the same workstation where PsychCorpCenter is being installed, you may receive a message to insert the MS-Office CD-ROM into the drive. This is because both installs use the {mscomctl.ocx} and MS Office 2000 requires a refresh of this file. To remedy this situation, insert the MS Office product CD as directed by the message and you will be able to proceed normally.
You may research this known issue by going to www.microsoft.com/technet using the article ID Q217706 or by tying in the message you receive from the MS Office 2000 directly in the "search" field.