I'm thinking of selling mine, I play my PS3 more so than anything.
The system has Monster HD Cables and headset. Power Supply.
It has 2 wireless controllers (1 white, 1 black) MS brand
Guitar Hero 2 with X-Plorer Guitar (CIB)
Guitar Hero 3 with Les Paul Guitar (CIB)
Halo 3 Regular (Mint)
Quick Charge Kit (Charges 2 Battery packs) w/ 4 battery packs
It also has a 1 year warranty with it that is good until September 08'