Guitar Hero 2 guitars are the same as the Guitar Hero 1 guitars, so they work with guitar hero 1 and 2. If they are for the same system as Guitar Hero 3, then they will work. But that would only be with the PS2 and Xbox.
Sadly they don't. BUT the controller for rock band does work on:- guitar hero areosmith. guitar hero world tour guitar hero metallia Or any other band games. ALSO The guitar hero III guitar works on the rock band game, because It's a later release.