ati radeon "theater"

I'm trying to set up an ati radeon "theater" agp video card. It has a tv card/port built in. I'm unable to determine if it should work or not. Any one out there with one of these and working with kwintv or xawtv?? I have 3d working but can't seem to get the tv section of the card working. Thanks -- Mark Hounschell dmarkh@cfl.rr.com