I have my HR20 connected to the TV via HDMI to DVI adapter. My TV has only 1 DVI port (my HR21 is connected via cmponent). I would like to connect my older Media Center PC to the TV as a game machine, but it's output is DVI too. Is there a way (adapter, switch, etc.) to connect two DVI sources to my single DVI input on the TV? If not, is there a way to split component inputs? (I could switch the HR20 to component as well, but I only have 2 component inputs, and the DVD player uses one of those too).