Hi Buzzard,
Are we up to date with our virus definitions?
Sounds a lot like one of the problems off the blaster virus! (not that it is that offcourse)
A more probable reasen in the faqt that you're window's tempfolder is Full! (Office needs at least the size of the file as available memory/space to save a file)
Look it up:
Find and Select C:\Documents and Settings\<user>\local settings\temp
and delete all files in there.
They are often left behind by installing programs but Office needs the space.
Good Luck!
P.s, while this is a problem on many computers it's proberbly the Temp folder....a lot of people forget to clean it out once in a while
Regards,
Joost Verdaasdonk