Yeah, the reason I said try with Hazard was because I knew the integrated bootloader included in it will at least boot with the flags I specified on AMD (SB700 anyway). So I think when you installed chameleon on the USB, it modified it.

I never tried Nawcom's boot with a retail DVD, but considering he creates really nice kernels for AMD's, I'm sure it is the best way to go.

Sorry this is giving you so much trouble. Stick with it...the payoff is pretty fun! I'd pick up some more blank DVDs if getting the USB drive to boot is giving you trouble.