I guess an example of jaas.conf file that uses the NTLoginModule for authentication would help.
                +1 
                A: 
                
                
              
            I am not sure if that is what you mean, but I guess you could have:
SomeName
{
   com.sun.security.auth.module.NTLoginModule required;
};
and then you can use it:
LoginContext lc = new LoginContext("SomeName", new SomeCallbackHandler());
lc.login();
The java.security.auth.login.config property should point to where the config file is located.
                  Bogdan
                   2009-02-14 23:08:01