I'm thinking of doing something just like this...using a basic Harmony to teach my 620. Question: can I just use the "Activity" macros that the Harmony sets up and teach the entire sequence to the 620 (on the input buttons, no doubt)? While I'm at it, can I make a "All off" button like Harmonies use, but put it on the 620's "power" button? What is the best way to approach this? We have young kids, and the 620 works great, seems tougher than a Harmony, and doesn't cost an arm and a leg if the kids decide to fight over it and the remote loses!