[dabura]

Hi, I just got my HTC Diamond flashed to MetroPCS and eveyrthing is working, all except internet/MMS. I downloaded the CABs that suppose to fix that but my touch will not install it, i think its because im using Sprint stock ROM. I'm thinking about upgrading it to the custom ROMs that available here at PPCgeeks, but the Metro Guy at the store told me that i need to upgrade the PRL ( Prefered something list) whenever i upgrade my phone's ROMs to get my MetroPCS service continue to work. Is any one here have any idea what that is and how to do it?
Would be great if some one can help on the steps that i need to do before and after installing a ROM, thank you in advance ^^