I just purchased some Zalman Theatre 6 headphones, and they have front, rear, and center input connectors. On my Sound Blaster Audigy I was wondering where I plug them into. Not real good with sound cards and such...pretty much clueless.
Green equals front
Orange/Yellow is back
Black is sub
Dont remember what the side is, but that is the normal setup I believe. May be different, but that should be right, although I am at work and saying this off the top of my head.