[Samba] Samba passwords problems

[cnunez at cdi-agb.com]

Hi list 

I have some problems with my samba PDC.

1- The users can't change the password, i have configured:
unix password sync 
passwd program
passwd chat 
Im using whitebox 3.0 with samba 3.0.4-6.3E


2- How can i give privileges to a normal user ?

3- I need some good LDAP tutorial to setting up on my PDC.

Thanks in advance


Cristhian