So, a while back I mentioned that in the "What have you done lately" thread that I had swapped out my tire valve stems and no longer had monitors in them. Someone mentioned that the AEV Procal computer could zero out the monitor system. I already had a Superchips Flashcal, so I wasn't too motivated to buy a new computer.
Anyway, long story short, you can now download an "Off Road" tire setting for the Flashcal for free. No more nasty little light on the dash.
So, as far as I know, there are two computer that do that...AEV Procal and Superchips Flashcal. The latter costs about $155.