It supports Excel 97-2003... I don't know about Mac but I am sure it does.

It does have a steep learning curve though... It takes time to get used to
the new ribbon interface...

"CommMajor" wrote:

Hello everyone,
I need to buy an excel version and 2007 is obviously the newest. But my
concern is that I will need to be able to open and work on excel sheets that
were created in both Excel 2003 and Excel for Mac. Will the 2007 version
support both? Thanks!