Can anyone help me in the process of unlocking my Verizon/Earthlink 7250 for use on Alltel? I just got a great deal on ebay so I don't have to sign a contract with Alltel. Any help would be greatly appreciated.

You will have to call Alltel. I was thinking about doing this a while ago, but went ahead and bought a new Alltel device.
The handset may be locked to Verizon, I would ask the Alltel representative.