PrivatePilot, you must be asking about the iVue guide, and this thread isn't about that. Anyway, you can't easily add channels to that guide. If you want to make a change to which source is selected by that guide, highlight the channel, and either hit 'c' on your keyboard, right click with a mouse, long press on the channel if using a tablet or use the menu button on your remote to bring up the context menu, and you'll see 'Remove Stream'. Click on that, and then do that again to 'Select Stream'.