I just bought a 80 gig External USB Hard drive, I have allocated 10 gig of space to one NTFS partition and the rest to another for backup. With the first partition I would like to install WinXP Pro SP2 with the hardware patch so that I can hook my USB drive to new computers and boot off it to scan the machine for adware/spyware/viruses locally without having pull out the hard drive and put it in my machine. My question is somewhat of a discussion, I would like to know what would be the best way to go around this. My impression would be that I would load windows XP on the USB hard drive, not install any device drivers (besides NIC for updates) on the load of windows, install my AV, adware/spyware/malware removal programs and then apply my XP SP2 hardware patch that allows you to change motherboard chipsets without the good ol BSOD. Think this will work or a waste of my time?