Maybe I'm misunderstanding the question, or the utility, but here's a quote from the web page:

"Can also authenticate users against NT Authentication/Domains in Windows NT environments"

>>Hi Augusto,
>>
>>West Wind has a class you might want to check out:
>>
>>http://www.west-wind.com/webconnection/addons/usersecurity/
>>
>
>Not at all. This class is for implementing homegrown user/security info. It doesn't integrate with the OS.