I have a Windows 7 MC (ultimate x64) with 2 ATI TV Wonder USB cablecard tuners. I just upgraded from Comcast digital starter cable to digital preferred. This adds a bunch of channels. However, only one of my cablecards can get the new channels. I called Comcast several times and they claim they were able to contact both cablecards and download the access information; so they claim the problem is in my PC or MC. Has anyone else seen anythgin like this? Does anyone know of a way to check the list of channels scanned for each card? I've looked around the registry and didn't find it there. Thanks.