I got a copy of the 64bit edition of Windows 7. I was planning on installing it when I get Fusion 3, but someone told me that running a 64bit version of Windows 7 with only 1GB allocated on VM will be horrible. I can't exchange the software to a 32bit version and don't know what to do now. I really don't want to use Bootcamp and have to restart every time I need the other OS. Any advice?