Same here Dav0! I bought this card and it doesn't get any HD signals off of cable (also comcast). All it detects is anolog channels (2-99), no QAM channels as stated in their marketing. So far I have not been impressed, if it can't detect HD cable signals, the only thing it does for me is HDMI. $200 just to have a video card that has HDMI card is not worth the price;
Also, I have yet to get it to pass throw Dolby Digital when playing a DVD; I get sound, but it is strictly two channels. Maybe it does do Dolby Digital, but so far I have not figure out how.
Documentation is extremely limit and for the most part no help at all. No where does it talk about HD TV, Clear QAM, DVD recording/playback, and other media center features it ships with. The Media Center software included looks to be Open Source stuff, which is fine, but it is left the user figure out how to make it work as if they already have the skill/knowledge as to where to go on the internet find what they need to make it work.
Lastly, the NVidia 8600 card that I was using looked slightly sharper on my 50 inch HDTV. I notice that the fonts are slightly fuzzy with AIW-HD. The NVidia 8600 card had a very sharp/impressive image.
Maybe I am missing something, but boy, this product does not deliver on the ATI marketing that is on their website. Taking a guess, the intent is for this card might be for OEM systems, therefor Dell, Gateway, HP, etc will make the card work with whatever software they decide to ship with their Media Center systems. Maybe it works great if a person already has Media Center software installed, or decides to get it.