I was interested in this post because I'm planning to join the HDTV revolution and Comcast is the major provider in my area. We currently have analog service from Comcast, but I see that they offer Digital Cable service (in several packages) and they also offer HDTV service. I understand that in signing up for HDTV service from them you are basically paying for the rental of the set top tuner, and since the TV I'm thinking of (KDF 42WE655) already has a tuner, the set top box is not necessary. I asked Comcast if it was necessary to sign up for Digital Cable service in order to receive HDTV and they said no, which is what I'm understanding from your post.
So it sounds like if one has plain old Expanded basic cable service from Comcast and they provide HD programming in my area, then just hooking up the TV will be enough to enjoy HDTV. Right or wrong? I'm not interested in Premium channels, onBoard programming, etc.
I have basic/standard cable, which is really all i need. Just screw in cable to back of tv where it says cable. I thought I'd try digital since it was free and everyone says to wait with the cablecard. Well the guy came brought a box w Hd. The good box they were out of meaning I had to switch something to get HD. He Hooked it up and it made almost all my channels look grainy and horrible, i could not believe my eyes. He said it could do that. I said take the box out of here immediately. My reception without the box is outstanding I also get HD without a box which shocked the heck out of the cableman. I give Comcast a ZERO. They seem very confused and are to quick to install equipment that is not up to par. They are also having problems with the cablecard. Now I see why people are changing their service.

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