Is it possible to run more than 1 version of BI on the same server?

Hi

I am totally new to SAP software

I would like to know if I can run "SAP BusinessObjects Enterprise XI 3.1" and SAP BusinessObjects Business Inteligence Platform 4.1 on the same Windows Server 2008?

Also please let me know the specs required if this is possible.

Appreciate your assistance.

M.