Download and install the compatibility pack and you can open the 2007 files
in 2000.

http://support.microsoft.com/kb/923505

Note: even with the pack, earlier versions are still limited to 256 cols
and 65536 rows.


Gord Dibben MS Excel MVP

On Thu, 11 Jun 2009 15:00:01 -0700, Normwein
wrote:

I have Excel 2000 installed. How can I open or view .XLSX files? There
appears to be a viewer for 2003 and above but it doesn't seem to work on my
2000 version.