I'm currently running Vista 64bit and have both the IE7 32bit and 64bit installed. I use both versions and would like to keep it that way. My question is if I automatically update to IE8 will it update both versions or will I end up with just one?
Yes, if you download IE 8 for x64 platforms, both the 64-bit and 32-bit versions are included. Until Adobe can get off their lazy asses and make a 64-bit Flash player, we'll have to put up with 32-bit IE a while longer.