It appears that the latest up and coming NTLM authentication module for Apache2 is mod_auth_ntlm_winbind, written by several key figures in the Samba community (i.e. they know EXACTLY what they're doing when it comes to chatting authentication the "microsoft" way!).
Any chance of this module becoming part of the standard Xampp4Linux distro?
They have guidance available at http://adldap.sourceforge.net/seamless.php and in particular, a detailed discussion around the mod_auth_ntlm_winbind module at http://adldap.sourceforge.net/mod_auth_ntlm_winbind.php.
What do you think the chances of getting this folded into an up-and-coming release are?