So, I finally picked up a TiVo premiere, I went to my Comcast office and asked for a CableCARD, The lady didn't really seem to know what I was talking about, but later showed up with a Motorola CableCARD, and said "I don't really know what this is for, but i think this is what you want". Long story short, I Came home, called Comcast Tech Support to activate, gave them the S/N, and they said they could not add it to my account, they kept getting Errors, and I would have to wait until someone "higher" than the tier 1 tech, could get a hold of me. My question is, Did i get a wrong cableCARD? i'm afraid the old lady didn't know what i was talking about. It came in this clear plastic case with an M on it, and no instructions. Help?