#1
The guitar model is Stedmen pro if it makes a difference.
It's similiar to a Jackson Rhoads model and has a floating tremolo bridge.

How on earth do I string this thing and tune it???
#2
There's a thread stickied in the Electric Guitar forum, that should help you out.
Gear:
Ibanez RG7321 Seven String
Epiphone Iommi Signature SG
Digitech Scott Ian Black 13
VOX Valvetronix AD100VTH
Laney 4x12 w/Celestion 50s