I love my ATI card, the only screen capture I have done so far is from TV, and it does a respectable job at 320X240. Through the S-Video and/or composite audio/video inputs you can hook up any video device (camcorder, Game Console, VCR) and play the video on your computer. The SW also includes a media player and a VCD player, although I am unable to test this as I don't have a VCD disk.
NOTE: I have W2K and the drivers for W2K are beta so some of the features for video editing are disabled/discouraged when you start them up. I have not encountered any problems with the normal use of the TV card, nor any of the other features except when I did a TV capture for 30 seconds (6mb a sec) and the video was good but the sound was garbled. That may be a hardware issue, but the main fact is: If you want to unlock all of the card's video features right now you need to be using W98/ME.
Still a cheap way to get video from an older Camcorder into your computer, or hook up your PSX or N64 and dust off those old games. The TV feature is flawless, it even picks up Showtime when none of my other (analog and Digital) outlets receive it. For the price I paid, 69.99 overnighted free from Outpost.com, I am pleased with the performance and interface. (Onvia.com has the same card for 7 bucks less, but I wanted it right away and Onvia's outlook is sketchy)
So what I am really saying is that this is a well supported TV card, which is why I bought it. It was a little more than the others, but the Online support and detail on the ATI site sold me. You be the judge.