Im about to do some things that require W7 on my MBP After thinking it over I have three options: -Put W7 on Leopard -Upgrade to Snow Leo + W7 -Not put Windows on at all and buy a separate cheap laptop My question is -Can I put W7 on a Leopard OS running machine? -If I upgrade to Snow Leopard are there any known issues that would make it more trouble than it's worth? Leopard is working %100 for me -Will Windows act quirky on my Mac/cause any unrecoverable problems? Especially will it run the hardware hot? I'm one of the unlucky ones that got the bad Nvidia chip...heat is the enemy.