[Samba] Changing Passwords

[Jason Self]

Hello All,
Does anybody know off hand how I can get Samba to allow windows users to 
change their login passwords?  That way I can allow users to do things 
like control-alt-delete and click change password and not get a 
permissions denied error?  To that end I would also like to expire 
everybodys password and make them pick one of their own.
Thanks as always.
-- 
Respectfully yours,
Jason Self
Electrical Designer /
Network Administrator
Intertech Design Services, Inc.