I'm using BeyondTV as well. I'm thinking of getting the Hauppauge HD PVR, which takes the HD component output (YPrPb) from the cable box and does H.264 compression, and streams it to your PC via USB. I've probably spent quite a bit on this machine, getting two other tuners, plus a HD HomeRun, but this solution sounds like it will work. It's another $200, but it's not tied to the cableCard monopoly, and it will work with other inputs, like an Xbox 360. Plus if I switch from Comcast to some other provider, it will still work.