Upconverting Receiver Can I Connect My Xbox 360 To A DVD Player Using A Optical Cable To Take Advantage Of 5.1 Surround Sound.?

Can I connect my Xbox 360 to a DVD player using a optical cable to take advantage of 5.1 surround sound.? - upconverting receiver

I mean 360 a DVD player connected to my HDTV Upconversion via HDMI. The DVD player is connected to a receiver over 5.1 "red and white plugs that do not have a registration of the optical cable. Is it possible to connect everything together? Xbox DVD to the receiver and HDTV?