http://www.unlocktotalk.com/CDMAReprogramming.htm

This video by UnlocktoTalk.com shows you how to reprogram a Sprint cell phone to work with Cricket. It shows how to read and change SPC to unlock the Motorola CDMA cell phone, and then write a PRL file to the phone so it works with Cricket. You could also do this to make any Motorola cell phone work with Verizon, Sprint, Alltel, or any other CDMA service provider.