I currently use Parallels to run Windows XP and some very basic windows software. Some day I might upgrade to Windows 7, but that's not important right now. What I'd like to know is if its possible to create a VM to run an older version of Mac OS X. Preferable 10.6 Snow Leopard (or earlier) to run some old Power-PC based games, like Warcraft 3, etc. Is this possible? What would I need to do this? Thanks!