Sorry for the delay on this, I wasn't able to connect up until today. 
Here's the top part of my smb.conf file.

Again, you need to have winbind running to start samba to join a
domain.  But, in order to start winbind, you need the idmap paramaters
defined.



#======================= Global Settings =======================
[global]
   netbios name = servername
   username map = /etc/samba/user.map
   workgroup = DOMAIN
   server string = %h server (Samba %v)
   log file = /var/log/samba/log.%m
   max log size = 1000
   security = domain
   password server = DOMAINCONTROLLER1 DOMAINCONTROLLER2
   encrypt passwords = yes
   socket options = TCP_NODELAY SO_RCVBUF SO_SNDBUF=8192
   local master = no
   read only = no
   preserve case = yes
   short preserve case = no
   dos filetime resolution = yes
   syslog = 0
   wins server = xx.xx.xx.xx
   dns proxy = no
   idmap gid = 10000-11000
   idmap uid = 45000-49000



Let me know if you have any questions.  this worked for me on a RHEL
3.0 server.


-- 
Shawn

 "Courage is resistance to fear, mastery of fear -- not absence of
fear."
	-Mark Twain

  Ne Obliviscaris --  "Forget Not"

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