Programming via USB

[Vacs]

Ech! Ok but I guess I'd better wait a few days. I just got a new "A" code last night I'd better not ask them again tonight. You know I looked at the PRI after I went back to stock and it was different than it is now but I didn't write it down. I seem to think it started with a 1. What is it supposed to be anyway?
One last question (yeah right huh?), after I put in the GPS radio I go back into bootloader and install a custom ROM. Then the phone does its thing until it stops at a green window that says tap screen to set up your phone (or something like that). So I tap the screen and eventually I get the screen alignment screen (where you tap each corner to align the screen). Here is where I stop to prevent the custoizations from running right? Well no matter if I soft reset, hard rest, or even take out the battery it keeps coming back to the alignment screen. I have no choice but to tap each corner etc. After that it says customzations will run in 3 seconds then it looks like one or two programs run for about 3-4 seconds. Are these the customizations running? What would happen if they did run, would that stop GPS?? Are customizations just the roaming info??