You have to use the guitar hero guitar. You cannot use any other kind of guitar.
Sync, like to connect a wireless guitar to the system? There's a small button at the bottom of it, near the nub for the guitar strap. Hold that in, and hold in the small button next to the memory...
You don't sync it. You plug it in the PS2, and if it doesn't work, then it's either a problem with the guitar or your controller port.
yes