How to Configure Nessus3 to use WWW-Authenticate: NTLM credentials

All -

Is it just me or finding and an example documented on how to configure authentication with Nessus next to impossible?

Ok here is what I am trying to do:

Scanning a single host which requires WWW-Authenticate: NTLM. I want the scan to pass the credentials and login. Is this possible? How?

Do I use the web tab? If so do I need to add domain\username in the HTTP account? Or am I to use SMB fields in 'Credentials' tab? Is is it somewhere in the plugin family?


Extra credit.

I also have have systems which require HTTP form based auth. I assume this is done on the 'Web' tab yet what do you do? Let say we are testing gmail.com auth (an an example)

HTTP account = username
HTTP password (sent without encryption) = pwd
cgi_path = path-to-login? would I enter /accounts/ServiceLoginAuth?service=mail

Thanks for your time.

Don W.