There is another possible option, but it would mean deleting and recreating the other user profiles, as this could be an application data issue.
To test this:
1. Create a new Administrative account, restart the PC and log into that account. In My Computer | Tools | Folder Options | View Tab select "Show hidden files and folders"
2. Right Click My Computer and select Properties, on the Advanced Tab, click the Settings button under "User Profiles".
3. Highlight your own user account and click copy, then browse out to c:\documents and settings and highlight "Default User" then click OK, then OK again to confirm overwriting the default profile.
4. Now create another new user without administrative privililges, logout and login as this new user and try loading Word Perfect.
If this now works then simply delete the profiles for your other users and have them log back in again. (You can delete the users profiles from the same tab in My Computer Properties as used to copy your profile above, or simply delete their folders under c:\documents and settings. Or rename the profile folders to add .BAK to the end so that you have a backup copy incase things go wrong later, then you can restore there profiles by deleting the new ones and removing the .BAK from the old ones)
Note: If you have documents / settings etc in your user profile that you do not want copying to all the renewed user accounts then you would be better setting up the newly created Admin account the way you want everyone to be able to use things and use that one to copy to the default user. That way they get a relatively "clean" profile with no customisations, and your documents remain yours only
If you need clarification on any of the above points just let me know
