samba - Nov 2004 - Samba groups and LDAP, and printer question

Hi,

Is it possible for me to add @Some_Group as a memberUID for a Samba group 
mapping?  Will it expand that @Some_Group to include all the members of that 
group in this group?

Another question -- is there a way to make everyone able to add printers to 
their local workstation, but not be able to delete other people's jobs from 
the print queue?  It seems sort of all-or-nothing.  Is this a group policy 
thing instead?  I hope I can do it from within Samba.  :)

Thanks,
Misty