[Samba] Minimum ldap config

[moof48 at temple.edu]

I currently have samba3 authenticating off of my ldap server 
but now I want to just do the minimum.  We currently have an 
ldap farm that is the backbone of almost everything at our 
university but we want to allow authentication in the labs.  
What are the minimum samba & posix attributes that I can get 
away with.  All I want is to allow authentication into a lab 
worksation, some printing, and a temp space.  I dont need to 
do anything else at this time.  Thanks in advance.