Find ESN After Sprint to Alltel Switch

[bond00]

This can't be hard...in fact I think its so easy most people have overlooked it assuming everyone knows how to do it. I've followed the instructions from several posts to unlock my Touch Diamond, obtain the MSL, replace with 000000s, and flash with stock Alltel ROM. I'm ready to activate the phone on Alltel's network...I think, but how do I know the ESN now that I've modified? I need the ESN to activate the phone, but the ESN behind the battery is the Sprint ESN, which of course is not acceptable by Alltel. How do I find the new ESN?

Also thank you to everyone on this forum. I was able to find everything up to this point. Thanks so much for your help!