since many older pcs do not boot fro usb drives wiihthe usual hd mbr, this is an awesome way to get a pc to boot from a usb. but since i am a newbie, i dont really know how to get the u3 tool to work. i'd like to install a linux distro to my usb key. i've got a usb key with u3. now what? is there a basic tut/walkthrough somewhere?