Do you still have your old version of Excel? You'll have to open and convert
the files to a format the new version will read, then open them in the new
version.
I still have my old computer running Windows 2000 Pro. When I try to open
the WK4 files with it, I get the following message "You are attempting to
open a file type that is blocked by your registry policy setting."
Read all of this as it covers those files
Information about certain file types that are blocked after you install
Office 2003 Service Pack 3 http://support.microsoft.com/kb/938810/en-us
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