My TV (a Vizio 37" LCD) which is not directly supported in the Harmony database has one input selection button. You have to push it once to get into the selection menu, then push it again to move through the selections. I will not keep sync'd up I think due to the fact that you have to push the button once to get into the selection menu. It also has an AV button which if you push that it will put you at the top of the list and I tried using that for a semi-custom solution but the software would not program it as it said the button was labeled _ or - and that is not an acceptable character. I see no way to re-label the button in their software.