Yesterday we added a 4th line to our account. We have 2 unlimited lines (DX2's), 1 dumbphone line, and now a NEW 2 GB data line(RAZR MAXX). I want to swap phones - RAZR MAXX with one of the DX2's - so the RAZR MAXX is on unlimited preexisting and the DX2 goes to the NEW 2 GB line. Starting over on any phone after a year of building apps and such is already a chore so I am looking for the most simple way to go about this. Should I go to the store? Have a CSR walk me through it over the phone? Any suggestions are very much appreciated.