Does anyone have success and/or tips on using a component video switch? I have a tv with only one HD component video port and two that play 480p. The tv is "ancient" with no HDMI ports. I have my DTV/cable box connected to the HD component input. I want to use a switcher to put both the DTV and AppleTV into the switch and that input into the HDport on the tv. I just purchased a Philips Component video switcher that is supposed to "auto" switch depending on the unit sending a signal. I can get both units to play on tv in 1080i. But I can't get the unit to auto switch. I'm suspecting the unit, but thought there might be others trying this with AppleTV that would have advise for me.