Thanks, all. Obviously, I have a bit more to learn here. I assumed that because both tuner card and video card were HDTV capable they they should be able to handle digital signals as well as the TV. It sounds like that applies to OTA, but not the QAM signal that comes over a cable channel, correct?
One last question -- if I get a new QAM-capable tuner card, is it worth upgrading to Windows 7 MCE, or is something like BeyondTV (with inherent support for QAM) on my existing XP box a better option?
Appreciate your advice!