Assuming your home computer is running Excel 2003 or older and the laptop is
running Excel 2007.

BTW...........Operating System has nothing to do with the version of Excel

Installed Office version determines the Excel version.

You will need the Compatibility pack to open 2007 files on 2003 unless the
2007 file was saved as 97-2003 version.

http://www.microsoft.com/downloads/d...displaylang=en


Gord Dibben MS Excel MVP

On Mon, 1 Dec 2008 17:16:01 -0800, JLS7
wrote:

I saved an Excel worrksheet on my laptop which runs on Vista. I then emailed
the file to my home computer which runs on Windows XP. When I try to open
the worksheet on the home computer it get an error message which says "This
file is not in a recongnizable format" I've downloaded a number of Microsoft
updates, but they have not helped - I still get the same error message. Any
help would be appreciated.