Since the USB Gecko site is down (not coming back) I have uploaded some pages that help with use of the USB Gecko.
http://wiilazer.info/gecko.html - Code types
http://wiilazer.info/extra.html - Pointer refresh and Universal unban code
http://wiilazer.info/Gecko_Video.html - Gecko Video Page BETA
http://wiilazer.info/video - Gecko Video (Demo of v2)
Enjoy!