Yes, all Guitar Hero controllers work with every game. Of course this doesn't include cross platform.
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You can use it the same way you would use it on Guitar Hero 3. But it has more lag than the Guitar Hero 2 controller.
The game is compatible with any guitar
Yes U Can
I'm pretty sure you can!
That completely depends. Is the guitar hero 3 controller for the same platform as the guitar hero 2 controller ? (I.e. xbox 360 or ps2)
No, you can use the guitar hero 3 controller, which is wireless, for guitar hero two
yes
if there both on the same console then yes.
yes
I dont think soYes, you can use the guitar from guitar hero 3 for guitar hero 2, guitar hero aerosmith, guitar hero Van Halen, guitar hero 5, and most likely all the others, so long as the gamestation supports all the games listed, you can also use the guitar from world tour, and guitar hero 2 for an of the games listed as well.
No, DJ Hero will be the only game to have guitar songs.