I think I would be concerned about having a virus.

If you don't have an antivirus program, this may help find a virus on your pc:
http://us.mcafee.com/virusInfo/default.asp?id=stinger

"Lyndon Baysic via OfficeKB.com" wrote:

I have a problem that i encountered last April 27,2005 9:45 am all my MS
Excel file converted to 0 bytes at the same time and date. what shoould i
do i need my files back please help me.

--

Dave Peterson