I own a MacBook Pro 15 inch (8GB), and I use VMWare to run Windows XP 32bit. I set my Windows to use 5GB, but learned to my dismay that XP 32bit will only use 2GB max. So, I need to upgrade to XP 64 or Windows 7. My thought is XP 64 will be easier than Windows 7 to upgrade to. Wanted to find out if anyone has any recommendations as to which would be best to use.