Actually, I looked it up..... try this:
To remove the damaged Office 97 registry settings and to register Office 97 again, follow these steps:
NOTE: The following steps remove all user-specific settings for all of the Office programs. You must reconfigure all user-specific settings manually.
On the Windows Start menu, click Run.
In the Open box, type Regedit, and then click OK.
Expand the HKEY_CURRENT_USER subtree until you see the following folder:
HKEY_CURRENT_USER\Software\Microsoft\Office\8.0
On the Edit menu, click Delete.
On the Registry menu, click Exit.
NOTE: When you quit the Registry Editor, the changes are saved automatically.
Shut down and restart Windows.
After you restart Windows, place your Office 97 CD in the CD-ROM drive.
On the Windows Start menu, click Run.
In the Open box, type the following line, and then click OK:
:\Setup.exe /y
NOTE: is the drive letter for your CD-ROM drive.
Setup starts in Maintenance Mode.
Click Reinstall, and allow Setup to complete. Setup does not copy any files to the system. Running Setup with the /y switch only updates the Windows registry settings.