My son just got an Xbox 360 and we want to hook it up to get the high definition output. My TV is a Mitsubishi 55819. He has the cable with the HD switch. We hooked it up to the DTV input on my TV, but we can't get 1080i output to the screen. My Samsung OTA receiver works just fine when hooked up to the DTV input on the TV, but we can't get the Xbox to work in it. When we switch the Xbox to 1080i, there is no image on the screen. I have tried going into the TV menu, but it only lets me choose 480p and 960i. Any ideas? Also, since I only have one DTV input on my 55819, is there some sort of switching device that I can use to hook up multiple high def devices to use that same input? Thanks in advance for your reply! Bruce PS: If there is a better place to post this question, please let me know.