samba - Nov 2005 - using pam_smbpass to sync password

Hello,

I would like to use pam_smbpass to sync smb password . But I need to use 
a different smbconf (I found the pam module option). What are the lines 
needed by pam_smbpass in smb.conf ?

I already did some test in debug mode, but my users is not found. I 
added  pam_smbpass to the password section. Do I have to add it to other 
pam sections ?
Last thing, SAMBA is using LDAP.

thanks !