LDAP authentication from Windows (newbie questions)

[Afshin Behnia <afshinb@mediaone.net>]

Hello,

I've been looking at replacing our Windows NT Domain Controllers with NIS on 
Linux and installing NISGina on our Windows clients so that they can 
authenticate against NIS, when a friend suggested I take a look at OpenLDAP 
as an alternative to NIS.  After going through the documentations, FAQs, and 
searches on Google, I have not come across any way that a Windows NT or 2000 
machine can authenticate against an LDAP server - I'm sure I'm missing it 
somehow. Is this possible in a manner similar to NISGina?

Info on NISGina can be found at:
http://www.linuxworld.com/linuxworld/lw-1999-11/lw-11-integration_p.html
http://www.dcs.qmul.ac.uk/~williams/

Thanks in advance,

Afshin Behnia