Is there away to program a power off button with the SE? Looking to have a separate power on and off button.  Sorry if this has   been asked before, did a search didn't find anything.  

That is also something I am looking for. It will help a lot when switching between activities with a harmony remote.

I've proposed discrete on and off buttons to Jason already but for now there's no such function yet. It's hard to tell if or when this could be implemented. This functionality requires a detection mechanism that would tell Flirc if the PC is on or off and depending on current state activate and deactivate appropriate buttons (so in power off state only power on button is active and in power on state only power off button is active).