This is not a Word area, it is related to Windows and its file system (for
all kinds of files, not just documents).
Here is some reading for you to get an understanding of the issues:
http://support.microsoft.com/kb/306531
http://support.microsoft.com/kb/304040
http://support.microsoft.com/kb/223316
If you need more help, post in one of the Windows newsgroups.
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Regards,
Jay Freedman
Microsoft Word MVP FAQ:
http://word.mvps.org
Email cannot be acknowledged; please post all follow-ups to the newsgroup so
all may benefit.