I can change this in the bios can't I? I think any machine that can run Win2K or WinXP will be able to boot from this won't it? I am not sure what you mean by "support." Where would I find out if the machine I want to boot supports booting from a USB drive? Is this stated in the BIOS? So, as I understand it, as long as I have the drivers from machine A (mine) I can then install them on machine B (my friend's) and things will work okay? I am not sure why I would need to install drivers on machine "B" for hardware that is not connected to machine "B" but I can understand that Machine "B" might have drivers for hardware that is not connected to machine "A" In which case it would mean I need the drivers for the machine that I am booting at all times. However, Win2K almost automatically installs drivers when it finds new hardware connected so this might not be such a problem unless I run into someone with odd hardware.