The primary factor in setting up USB booting is whether or not USB boot is supported in the BIOS of the system that you want to boot from a USB device. If the system BIOS supports USBHDD or USBZIP, ...
Thanks for your question! We're glad you sent in this question as it's something I tried (and succeed) doing just a couple of days ago on one of our TweakTown test systems, and it's going to be handy ...