help with squid+msnt_atuh!

Hi ppl!

I'm tring to use squid proxy with the module msnt_auth to authenticate 
users with the PDC in my network.

I'll like to know if anyone have done this, and if it works ;)

I configure squid and msntauth to do this, wen i try to browse, I get 
the username/password dialog box but it doens't works with the 
usernames/password I give to it.

How can I debug this??

In the squid access.log file I have messages like this:

1052842317.096      2 client_ipaddress TCP_DENIED/407 1353 GET 
http://www.linux.com/ username NONE/- -

The PDC is a windows 2000 (yea, it's a lemon), and the msntauth readme 
says that has not been tested with Windows 2000 domains yet.

Any sugestion/comments/* will be apreciated.

Best Regards!
Matías.