I am purchasing a toshiba cd-r/dvd combo drive ,sb live5.1 xgamer, Asus geforce 2 GTS, and i already own desktop theater 5.1 speaker system.. my question is how do i hook it all up? I mean i have spdif on the speaker system ...how does it all work? the manual sucks since it is using a creative decoder card as a reference but i dont need it right?