http://forum.ppcgeeks.com/showthread.php?t=30192
I think I figured it out (atleast it seems to work for me).
Under HKLM\Software\OEM\PhoneSetting
Change AllowRoaming to 0 (not sure if this is needed or not)
Under HKLM\Software\OEM\PhoneSetting\NetworkService
Change ItemCount to 3 (instead of 2)
Create a new String called ItemName3 with the value of "Roam Only" (without
quotes)
Create a new DWord called ItemValue3 with a value of 3
You don't even have to soft reset. You can go into your phone set
