i ask because a friend of mine got GH3 (for PS3), and he's saying his GH2 guitars (for PS2) don't work with it. so he was looking to confirm that.

i have to say though, it was obviously a conscious decision to stop the GH2 guitars from working, and that's really shitty. he's going to end up with 4 freakin' guitar controllers, just so he can do two player games. way to screw your fan base...