I've been using USB to install windows 7 for a while now and absolutely love it. The only down side is I need to have at least 2 sticks, one for 32bit and one for 64bit. I've been doing a lot of repair work for friends, and invariably I end up scrabbling in the garage for old copies of XP and Vista. Is there any way to us a single 32Gb USB stick and have All of my Windows installs on it (XP 32/64; Vista, Windows 7 32/64, Windows 8{when I get it}) to save all the faf?