Thanks for the helpful responses.

I just got started with ProntoScript and will give the rotary wheel suggestion a try. I'm assuming that this script goes into the "Advanced" tab of the device properties for my "watch tivo" activity, correct?

As for IR codes, I was using the database codes that came with PEP, but was having issues with the liveTV/guide buttons (common tivo issue). I ended up using the codes from one of the Tivo Series 3 PCFs that I pulled from the TSU7500 download area. These codes are working much better in general.