Wirelessly posted (7130c: BlackBerry7130/4.1.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/102)

Is the above step all I need to do to get this to work (without being charged)? The general how-to thread about using blackberries as modems mentions something about calling in and adding something to my account. Do I need to do that too?