It might be possible, but you going to need some programs and it might affect you computer speed.
you get a cable
no
I don't believe you can use the PS3 Guitar Hero controller on the PC to play anything
No, there are no PS3 -> PC emulators right now, however you can connect a PS3 controller to your PC.
It's not about the Game a PS3 controller is designed for the PS3 as a Bluetooth wireless controller that was not designed for the PC or supported by windows software or hardware.
The PS3 can not Play PC games
You don't play a PC game with a dual shock 3 PS3 controller
PS3 is not a PC
no
ps3 games are bluray disc
PS3 games will not work on a PC.
no