So I have been using UnetBootin lately to build USB bootable OS sticks. I'll take a version of LAVA or even a PE Bart disk and run it thru Unetbootin and voila - instant USB Linux or rescure disk. I've used it to clean viruses off desktops, recuse files from pcs which will no longer boot, even do complete installs off the stick. Plus I sometimes use it as my desktop when I don't have my pc - Just go to someone's pc, boot up and you are working.
For more info - check out their homepage.
