Not sure whether to post this here or in the HD forum but here goes. I just had HDTV installed by comcast yesterday and now I am a little confused. The comcast installer brought a Motorola 5100 and hooked it up(or rather I did it because he had basically no idea what he was doing). I finally found where the HD channels were but now I am confused as what to set the Motorola box to and then what to set the TV to. I understand all the different menu settings on the Motorola but when I set the output to 1080i I get bars on the side of the picture and an elongated picture. I realize this is because the signal broadcast right now isn't HD but I was hoping someone with a similiar setup could tell me what to set the Motorola box and the Toshiba to. I really can't believe that Comcast has rolled out HDTV in the Chicago area and has absolutely no support behind it. A couple of calls to customer support got me the same answer-- "We really have no experience with HDTV and can't give you an answer". They can't even get my HBO channel working. Thanks for any help.