i have a Samsung LNS4696D Tv and using comcast motorola HD box along with a samsung 5.1 surround sound home theater system. My question is i have the comcast box hooked up using component cables, the surround sound (dvd player part) with HDMI and a PS3 with HDMI. Both HDMI ports are being used so there is no room for the cable box. I have the optical cable out from TV run into the surround sound. Wil this give surround sound after being processed through the TV and back to the home theater system? Also My HD stations look awsome, but the SD cable do not fill up the screen. Some even have black bars on sides and top and bottom. I was wondering if there is a setting i am not seeing that changes this. I dont remember exactly but when i did not have the cable box hooked up, the tv had zoom modes of zoom1 zoom2 16:9 and 4.3. but now with the cable it only has 16.9, WIDESCREEN and 4.3. Anyone have any info?