I am in a situation to help someone upgrade there Mac pro. It is an early 08. I don't know exactly what to give you guys for details but he wants to run windows 7 64bit. As an OS. So from what I see is the only way to do this is boot camp because he doesn't want to run it in VMware or fusion because he doesn't want to run a virtual machine. He also wants to max out the memory. So I have two main questions. 1. What is the best way to get this machine up to lion? (it's running leopard right now.) 2. How much ram can windows 7 64 see while installed on a Mac pro? (I know the machine has 8 slots, but I read somewhere that windows will only read 8gb. I just wanted to make sure that was true.) Can you tell I'm not a Mac user yet. Sorry. If your answers generate more questions I will ask more on this thread. If you need any more info on my end let me know. Thanks a lot.