Turcoupe

Does anyone know how you are supposed to reactivate your tire pressure sensors after taking your wheels on and off? I just replaced my touring wheels and tires with track ones and the TPS screen is coming up blank. The tech at the dealership was trying to use a electronic handheld device that was supposed to re-send the signal. The only problem was that he was using a Nissan Tech Service Bulletin for a "constant TPS light" as directions. I am supposed to come back tomorrow morning becasue a technician will be in that got training for this will be in. I just wanted to see if any of you has went through this already and knows what has to be done...