[Samba] Authentication

[Darren]

I am a relative new user of samba (well not to new), but I would like to 
authenticate samba through ldap, and ldap only. I don;t want to have to 
manage the /etc/passwd file aswell. Can this be accomplished all on 1 
machine (for example running samba and openldap on the same machine), with 
the openldap db  being the only user/group db I need to maintain. If so, can 
anyone point me towards some documentation for this. 

Thanks
Darren