I have numerous Excel files created on a Win2K Pro system with Office 2K,
and I am trying to copy them to another Win2K machine with Office 97 sr2.
When I try to open the files on the second machine I get this message:

Windows cannot find 'A:\filename.xls'. Make sure you typed the name
correctly, and then try again. To search for a file, click the Start button,
and then click Search.

and excel files will not open. other file formats are not affected. I can
otherwise manipulate the files (copy, delete etc.)
It doesn't matter if its an e-mail attachment or on disk the error is the
same. it doesn't matter if I doubleclick the file or open it from the file
menu, the error is the same. Any thoughts?