samba - Oct 2004 - ldapsam: "net groupmap" ... pdbedit ... smbldap-tools

Dear Sirs,

I managed to get samba working with LDAP, users were migrated to LDAP by 
using pdbedit.

Now I'm trying to add groups and users to groups. It doesn't work.
which of tool should be used for samba-3/ldapsam:

"net groupmap" ?
pdbedit ?
smbldap-tools ?

Cheers,
Ilia Chipitsine