Make sure you are running 2007HE. Uninstall PDA Net. Reset phone when done. Don't use ICS (which is PAN, not DUN). Check post #14 here for pairing instructions and connection settings. Pair devices. Put down phone! Verify Cingular settings on N770. Initiate connection.

The DUN profile is always active in WM, once the proper .dll's are restored. You should not need to start any application on the Hermes to get a connection with a second device, and truthfully don't even need most settings on the second device (as far as the WM device is concerned), as the *99# "phone number" wakes up the WLAN connection and the OS handles it from there.

Ninja