Having some difficulty getting it to work under Vista. I understand there is no "application" from ATI for Vista, but I can use MS Media Center (Vista Ultimate). The drivers from ATI seem to install correctly, but Media Center doesn't seem to get any signal.
I'm using Comcast cable and recently upgraded to HD. Can't get SD or HD via the cable, though. Haven't tried OTA.
I thought ATI came out with an updated version of the MMC, called Catalyst Media Center (CMC) for Vista. I don't know if that is a separate download of if you need to download and install it separately. Have you looked into that?