I must stress that YOU WILL LOSE MOST OF YOUR VERIZON APPS when changing your BREW settings or ESN.
Again, if you are hacking a Verizon phone's BREW or ESN-it will effectively BREAK all of Verizon's proprietary apps!
This means that when you click the email button, NOTHING will happen. Same thing if you try to open the Instant Messaging application. You will get a NO APPLICATION error. And yes, this also means the Verizon MUSIC PLAYER.
Please DO NOT pm me or ask me how to fix this. I'm trying, but as of right now, the point is entirely MOOT.
Enjoy everything else about the phone, but consider the Verizon apps a loss.
If you can't deal with this reality, then you may as well forget my tutorial.
YOU HAVE BEEN WARNED!!!