Windows Emulators on MAC, etc.

Bootcamp - free, but have to repartition
http://www.macworld.com/article/50374/2006/04/winmacfaq.html

Run a "virtual pc" on Mac
Parallels -
VMwareFusion -

Long Lists:
http://www.macwindows.com/winintelmac.html
http://www.macwindows.com/emulator.html

Run RDC (from MS) to a pc machine
http://www.microsoft.com/mac/DOWNLOAD/MISC/RDC.asp