If you have office 2003 and just want to upgrade Excel

[george]

Is it possible?

 

[Bob I]

Please don't multipost.

 

[Luke M]

You can download a compatibility pack to access 2007 files for free, but to
actually use the Excel 2007 software package you would need to purchase it.

 

[Jon Peltier]

It's possible, but I don't know of any good reason to do so.

- Jon