Thanks for the replies people.
Seriously one of these can be considered illegal? after all its an adaptor rather than a mod, all these controllers are in essence proprietary USB connections anyway... (i think! don't quote me on it..)
If anyone has 'actually' tried it on the Wii his/her opinion would be helpful, although I could just go and buy one its only about 5 bucks.
I want to get Smash Bros Melee, have heard great stuff about it, thats why i need either gamecube controls or these joybox's
PS ah the 'edit' button, gotcha!