Your sat receiver may or may not have an optical output. It more than likely will have a digital cox (spdif). This is qual to an optical cable as far a quality is concerned.

Run the HDMI from sat box to TV and run a digital coax from the sat box to the receiver and you should be good to go.

FWIW.... If you don't have a HDMI cab;e and need one, www.bluejeanscable.com these guys have top notch products and great prices. All my A/V cables have been purchased through them...