oh lol ya i have windows xp in my mac, with Mac OS X Leopard u can partition your hard dive "basically i split my hard dive in have" so one side is now my Mac, i have 75 gb of free hard drive space in it and on the windows xp side a have 32 gb of free space, this is all done with the app Bootcamp thats in Leopard, it's really easy. it took me about 1 hour to do these but lol all i use the XP side for is to play game. 
if u have any Q just AIM.
if u have any Q just AIM.
I use VMWare Fusion for partitioning and it works so much better than Boot Camp cuz I run over 5 different operating systems on my computer at once and you can't do that with Boot Camp