MSSpell3.dll errors

Students are saving project documents to their home directory
on the school network(Novell 5). However, problems arise when they retrieve the document to edit/add info. When they check on speeling and grammar checker, they receiev a "missing MSSpell3. dll and mssp237.dll" error. When F7 is clicked it dispalya a "spelling and grammar already checked" message.
When checking the tools to options on spell checker, the grammar checker is greyed out.
Checking a new document on the desktop, and spelling and grammar checker works fine; bring up a document from a home directory and we have a problem. Any suggestions? Many thanks!

What OS is the clients running... what version office?

We are using Windows XP, with Office XP(2002) Service Pack 3. Many thanks!