Problem setting up user account

On my just-installed XP machine, I installed Office 2000 and have used it
when signed on as administrator. I set up an account for my spouse and all
appears well - IE, for example, works fine. But problems occur when trying
to use other software:

Eudora gets a fatal error.

When trying to start MS Word, it seems to try to reinstall it - it asks for
the CD. If I kill all the repeated windows that indicate problems, Word
comes up fine!

Any ideas on what is going on?

TIA

Elliott Alterman