You may not be doing anything wrong. Here's how to check.
Go to zap2it.com and put in your zip code and select your cable system lineup. If it's correct there, and wrong on your tivo, you can try repeating guided setup on the tivo. If you have 9.1 software on your S3, you can just do the channel lineup part of guided setup by pressing enter from Tivo Central/Messages And Settings/Channels/Channel List (See the prompt on the bottom of that screen.) If not, you can repeat Guided Setup from Tivo Central/Messages and Settings/Restart or Reset System/Repeat Guided Setup.
During guided setup, it can usually deduce your lineup by asking one question. But you can tell it to try another channel if you want to.
If it's incorrect in both places, submit a lineup trouble report and it will be fixed in a few days. You'll get a message when there are lineup changes downloaded to your box.
http://customersupport.tivo.com/LineUpForm.aspx
The other thing that might help is to post which Comcast system you get and people that read this and are on the same system might also be able to help you. Usually the cable companies post their channel lineups on their web site, so you can check that too, to try to figure out if one of the answers is confusing tivo.
-David
Go to zap2it.com and put in your zip code and select your cable system lineup. If it's correct there, and wrong on your tivo, you can try repeating guided setup on the tivo. If you have 9.1 software on your S3, you can just do the channel lineup part of guided setup by pressing enter from Tivo Central/Messages And Settings/Channels/Channel List (See the prompt on the bottom of that screen.) If not, you can repeat Guided Setup from Tivo Central/Messages and Settings/Restart or Reset System/Repeat Guided Setup.
During guided setup, it can usually deduce your lineup by asking one question. But you can tell it to try another channel if you want to.
If it's incorrect in both places, submit a lineup trouble report and it will be fixed in a few days. You'll get a message when there are lineup changes downloaded to your box.
http://customersupport.tivo.com/LineUpForm.aspx
The other thing that might help is to post which Comcast system you get and people that read this and are on the same system might also be able to help you. Usually the cable companies post their channel lineups on their web site, so you can check that too, to try to figure out if one of the answers is confusing tivo.
-David