There are no problems running multiple versions (I have 97, 2000 and XP on
this machine), but you should install your primary version last, so that
defaults when an xls file is clicked.

--
HTH

Bob Phillips

(remove nothere from email address if mailing direct)

"René" wrote in message
...
Hello,

I'm currently using Excel 2003, but alos want to install a previous
version
of Excel because of an add-in that doesn't work in Excel 2003.
Are there any known problems concerning running two different versions of
Excel on the same computer?

Greetings
René