I found your answerRB guitars will work with GH.

http://multiplayerblog.mtv.com/2007/10/09/your-rock-band-questions-answered-guitar-hero-compatibility-bundles-etc/

Plusif you need more info on either RB or GH just go to N4G and type in the search bar and you can find some answers to what youare lookingfor. I hope this helps.

blackIceJoe

THANK YOU!

Does anyone have any idea if u will be able to use the Rock Band guitar controller on GH3? cuz i want to get both games but just buy the GH3 gamebuy itself instead of with the controller. i figure u wont be able to use the GH3 guitar with Rock Band cuz it wont have the extra fret buttons

sooo....anyone? anyone?

there is alot. thing is... alot of them r really frustratingly difficult recording challenges. but alot of the time u will wantin to just skate around. i havent beat it yet but my friends little brother played the hell out of it n beat it in about a week. so i figure if u dont overplay n do nothin but challenges n take time to explore n "own" some of the many spots around the city... it could take u up to around a month. have fun with it tho. n maybe once u get good ill whoop in skate lol

PSN id: NotoriousNIK

i like to screw around alot n just play with reckless abandon but when im actually tryin n get strategic... well i like to think im pretty good. i have only had thegame for like 2 or 3 weeks so im just barely some kinda seargant. (i play other games too) but i played alot on the 360. so anyone that wants to play...

NotoriousNIK is the tag. get at me