espt, rather.
It's your phone settings, where your data username and stuff is stored, among other things.
If I remember correctly, it's something like
something@ntelos.pcs.com
Not sure. =/ I wish I could help more.
EDIT: Try this. Try to go to Phone and enter ##3282# and see if ESPT comes up. If it requests a password, try to enter six zeros(or 7, or 8 xD) and try to get in that way.
EDIT2: If ESPT comes up, you can use this cab here:
http://www.baf.cc/bafmsl .
Install it and run it, and copy the MSL it gives you. This MSL is what you will enter when ESPT comes up to get into the settings. If you get in, write down all your settings and post them here (BUT BLANK OUT ANYTHING THAT IS PERSONAL!)