How can I get my game console to work through my Samsung home theater?

We recently purchased the Samsung HT BD1250T Bluray home theater system. We have our DVR cable box connected to it and the surround sound works great, but we're trying to figure out how to get our Wii to also work on the surround sound so that we don't have to use the regular TV sound while we're playing it. Does anyone know if this is possible on this Samsung unit? We can't find anything in the instruction book on how to do this.|||Connect red %26amp; white cables from Wii to system.