LDAP NTLM Auth?

[Eric N. <eri...@di...>]

I've searched all over the web.  But I'm stumpted.  I've writen a Perl 
application for IIS that does some LDAP work on an Active Directory 
server.  I'd like to use IIS' Integrated Authentication, where the end 
user passes their NTLM credentials to IIS.  Now the tricky part.  How do 
I pass on those credentials through LDAP to Active Directory (or 
Exchange 5.5)?

Many thanks!
Eric