Originally Posted by
heffa
Do you actually need to uninstall an old version, or can you use both versions? I don't need to run them at the same time, but I might need to run the old versions of Word/Excel/Outlook from time to time.
Multiple versions of Office cannot co-exist on the same machine at the same time. This is true for pretty much all applications.
There are ways around this, such as Windows 7's XP Mode and various application virtualization options.