Adding missing channels to the Guide
Some program channels are seasonal and do not appear in the Guide all the time. To add the names and numbers of the television channels you are missing or to change the associations between channel numbers and lineups:
1 Press the Media Center Start button 
on the remote control.
2Select My TV, Settings, Guide, and then select Add Missing Channels to add the names and numbers of the channels you are missing.
3Select Add Channel.
4Use the numeric keypad on your remote control or your keyboard to enter the name of the missing channel, and then select Next.
5Enter the correct channel number, and then select Add.
6Repeat steps 3 through 5 to add additional channels.
7Click Done when you have added all the channels.
Removing channels from the Guide
You may want to remove some channels from your Guide to prevent users from having access to them.
1 Press the Media Center Start button 
on the remote control.
2Select My TV, Settings, Guide, and then select Edit Channels to remove the names and numbers of the channels you do not want to appear in the Guide.
3Select or clear a check box to add or remove the channel.
4Select Save.
40Microsoft Windows XP Media Center Edition 2005 Reference Guide