Hi All, I finally got it all hooked up- the Plasma T.V., the Oppo upconversion DVD player and the surround system. Thanks to all your help with the surround info. No problems hooking up. The upconversion DVD player is easy to change HD mode. Where I am having issues is with the Toshiba HP5086 Plasma. I am not getting a really good crisp clear picture. I think it's only displaying in 480i mode. I cannot get it to display High Defintion (i.e. 720 or 1080) through the digital cable box. I called the cable company and they were no help. The Toshiba owners manual no help. Any ideas on how to upconvert to HD on this T.V.? Any help appreciated.