We just upgraded from a Toshiba rear projection to a Vizio VO37OM and I am having the same issue with our new VLZ620. The Toshiba's input were labeled 1-8, so I was able to program a macro to select the correct input device in the sequence. Since the Vizio inputs are not labeled, I have not been able to get the 620 to select an input, partly due to the very slow boot up of the LCD. Since this will not end up being our main TV, I am hoping to find a reasonably LCD that will allow the input device to be programmed.