Just make sure you're going from a power vision phone to another power vision phone. The codes for Vision and power vision phones were different for legacy Sero and you can't switch from one to the other without calling about it (I've read a lot of horror stories on SU). I'm 99% sure the Q is Power vision, but you might wanna make sure via the guides that came with your phone or somewhere else. Not trying to scare you, just don't want you to run into any drama
Edit: I just checked Sprint's site and it's PV, so what everyone said above is correct. Just activate it online when you get the phone, and you'll be good to go.