Yes.
No, you can use the guitar hero 3 controller, which is wireless, for guitar hero two
yes
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)
yes
yes
I don't believe you can use the PS3 Guitar Hero controller on the PC to play anything
yes yes
well you can use the controller but its a better expirence if you have the guitar
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.
haven't played guitar hero in years but for PS3 I know it was the Ls and Rs with one button on the face of the controller. That was the case for guitar hero 3
Yes, it is possible to use Guitar Hero 1 Contoller on Guitar Hero 3, also on all of the Guitar Hero games.
u cannot use the gh3 guitar for ps2 for the PC