Yes, you can install multiple versions of Office on the same machine. The
installation order is from earliest to latest, so install 2000 first then
2007. Be sure to install them in separate folders, e.g., C:\Program
Files\Office2002 and C:\Program Files\Office2007. During the install setup
process, you will be prompted whether to delete or keep previous versions.
Deletion is the default behavior, so be sure to check the options to keep
previous versions. You can have only one version of Outlook on your machine.

I have 5 versions of Office on my machine and have had no trouble at all.

--
Cordially,
Chip Pearson
Microsoft MVP - Excel, 10 Years
Pearson Software Consulting
www.cpearson.com
(email on the web site)

"Alan" wrote in message
...
I just got Excel 2007 on a new Vista machine. Some good things, some
not-so-good things. Can I install Excel 2002 on this machine, so I can
work
faster until I learn 2007? Thanks in advance,
--
Alan