I can't open a date file created in Vista's Open Office
There's no such think as "Vista's Open Office." OpenOffice is an
application suite that can run under a variety of operating systems.
on a non-Vista
computer using Excel.
Vista or non-Vista is completely beside the point here. The only issue
I can see is that you created a file in OpenOffice and Excel can't
read it. That may or may not be surprising ,depending on what kind of
file you created and what file type (extension) it has.
Excel is a spreadsheet program. It reads spreadsheet files (its native
format is .xls, but it can read others). It does *not* read all types
of OpenOffice files, any more than Excel can read all types of
Microsoft Office files. What kind of file (what extension?) did you
try to open in Excel?
Chances are you can't, but first tell us what kind of file you're
trying to open in Excel.