Forum Moderators: travelin cat
To answer your question though, yes, I use VMware currently and have used Parallels in the past to run Windows on my iMac (last generation, white) without problems. If it's slow add a bit more RAM and you'll be running Windows faster than your PC may have.
I'm running iMac, Intel Core 2 Duo (2.16 GHz), 3 GB RAM. Leopard OS X.
I strongly recommend at least 3gigs of RAM if you plan on using it regularly.
Here's the manufacturer's page on system requirements [parallels.com].