I recently purchased a premiere and installed an antenna on my roof. I spent lots of time aiming and tweaking the antenna, and actually tried 3 different models. My OTA signal has been reasonably solid (a few dropouts here and there) until a few days ago, when the typical Puget Sound rainy season began, and then the signal went to pot. So I disconnected the antenna and connected my Premiere to my Comcast cable. I was surprised to see all the channels, but then disappointed to learn that Tivo can't map them without a cablecard (which would mean more $$ to Comcast, and more $$ to Tivo also - since I won't qualify for the $9.99 antenna promotion). Anyway, I only need local channels (ABC, CBS, NBC, and Fox). What's the cheapest way for me to get a cablecard to do that? I've read that the card doesn't need to be paired to receive unencrypted content, so maybe I don't need to go through Comcast to get one? Any other way to tell Tivo where these four channels are? Other suggestions?