Hi all. My wife bought me this great receiver for my birthday but she's sad that I haven't been able to set it up. I need some help please. Here's the simple breakout and what I've done. Components: Comcast HD cable box/DVR XBOX 360 Receiver: Brand new Sony STR-DN1000 TV: Older 42" Toshiba Plasma screen with max 720p resolution. No HDMI. Only Component and standard inputs. I had an older 5.1 surround sound system where I spliced the wires and hooked them up to the receiver. I haven't even had a chance to play with it yet. I hooked up the cable box and xbox 360 via HDMI to the Sony receiver and then hooked up the receiver to the TV using component cables. When I turn the tv on, I can get the GUI for the receiver, but no picture or sound from either the cable box or the xbox 360. I tried resetting the receiver to factory and doing a clean setup, but still nothing. I've also hit the HDMI buttons on the remote as well as all of the other inputs and nothing while both the cable box and xbox360 were left on. Nothing. Help please! Is there a setup or is there an issue with the output being to only a 720p tv without hdmi? Thank you in advance!