asterisk users - Jun 2009 - Avaya 4620 SW SIP Config - not setting Proxy/Registrar

I'm using the latest SIP firmware from Avaya. The phone receives the
46xxsettings.txt OK, and then after entering extension and password it
goes to the home screen saying 'Registering'. When I check
options->ViewIPSettings->IPAddresses on the phone,
the registrar and SIP Proxy fields are blank.

I have both lines: SET SIPREGISTRAR "67.1XX.XX.XX" and SET
67.1XX.XX.XX:5060;transport=udp  in 46xxsettings.txt so I'm not sure
why they are empty.

Also, what username/password will it use for registration/calls? There
is no config examples for the line accounts.
Does anyone have any *working* example configs?