I think that I'm just going to stick with my dual boot. The only problem with that is having to reboot on occassion. Most of what I need will work in Windows 7 anyway. Actually, the only thing that comes to mind that won't is an Intel Play microscope that I have, but it won't work in XP x64 either, it has to run on x32.
I good thing about this discussion is that I have learned that I won't have to spend so much to buy a second copy of Windows 7 for my secondary rig, it seems that the differences that I need or want aren't that much less in Home Premiuim.