Originally posted by: Markbnj
Yeah, I guess basically. The tuner will pull in the first 125 channels of cable, or whatever is available from an antenna. It won't tune pay channels, or HDTV from a cable box, or HBO, or anything else that requires the set-top box from your cable company to decode. However you can feed video in from a set-top box. Just tell it to output on channel 3 and then tune the card to that channel. If you want Tivo features in that case you need to get them on the set-top.
The best software out there pretty much turns your PC into a PVR like Tivo. The software that comes with the ATI cards is Powercinema from Cyberstink. If you want better try Beyond TV, or Sage TV, both retail packages in the $69-79 range. GBPVR is free but I have heard it is a little rough around the edges. Can't say myself. Linux users have Myth TV, which I have heard good things about.
It all works pretty well, at least on this ATI card. There can be quite a variation in channel quality, but I have a long cable run. Some people say that the tuner cards need a good clear signal. Mine is good enough for now. Audio is excellent