They can coexist. It's best if you install Office 2003 first and then
install Office 2007. Note that you can only have one version of
Outlook (2003 or 2007) installed.
The university installed 2007 on it and I do not have the CDs. If I mess it
up I will have to take it back for them to fix. I think I may try to
install 2003 (without Outlook) and see what happens.