In the registry there's a box that says "require password", you need to change the 1 to a 0.

HKEY_LOCAL_MACHINE>>Comm>>ConnMgr>>Providers>>(Let ters/Numbers)>>Connections>>Data Network Connect

Change RequirePw from 1 to 0. I also change my AlwaysOn from 0 to 1, but that's personal preference.

The l/p format you have there is correct, but I don't believe in use anymore. After you flash be sure to do reset before it runs customization, install the carrier cab, and do a hard reset. This should get you going. Or you can use the ppcgeeks kitchen.