Here is a link.I have Vista Business on a dvd somewhere... I got it through my school's MSDN. I haven't installed it, and i probably won't. Hell, i just downloaded it so i could say "I have Vista", and then not use it.
I would love to try and dual boot my pc with OSX. I'd need to find a copy first.... lol.
Apple Mac OS X on x86: a first test Tech Guide in Operating systems Reviews at ZDNet.co.uk - Page 1
There is various information on doing this, but I can't promise that it is successful. Also check the link I posted above. I'm going to give it try next month, I have my fingers crossed.