What I have is a 16GB Sandisk Cruzer USB and what I want to do is take two ISO's, Hiren's Ultimate Boot CD and a multi install XP DVD, and be able to choose ether to boot off of. It would make things very easy to ether boot to the XP install dvd to restore a unit or the Hiren's CD when I just need to remove spyware and such. I might even want to make a third option to a USB dedicated XP so I may get into the hard drive. I have searched all over the internet and haven't found much info on doing this kind of thing, of course I might just be misunderstanding some information. Any help would greatly be appreciated.