If you are only using the window boot for gaming (like me) you don't need to upgrade to Win7 until a game you want requires it. SWTOR does not. Obtain a copy of XP SP3, jump through the hoops for bootcamp and play on. I have an imac and a macbook pro and ONLY game through boot camp. I have steam on the OSx on the imac any game that requires mouse movement is pointless to try and play. CS and L4D2 on the mac is horrid even with an app to disable the native mouse acceleration. Just make sure you give yourself enough room when you first do the bootcamp stuff. 20 gigs per game is normal. The other thing is http://sourceforge.net/projects/lubbofancontrol/ this fan control thing. I think it was someone on the SWTOR forums pointed me in that direction and it is a life saver.