Can i have Rogers HD receiver and also a Bell Express vue HD receiver at the same time? Can it be hooked up at the same time or can you only have one or the other? I think i must be out of comp video slots....X-Box, DvD, Rogers HD receiver then the moniter.......could i possibly hook a Bell dish to a slot where i have the DvD or x-box and just un-plug/plug when i want to use either one? I have a Toshiba HX HDTV and a 325 Harmon receiver. Thanks all.