Thanks to all the people who tried to help me. I've not read the man page enough. Someone tells me to add a line containing a "-" between attributes to modify. That's well shown in the man page. -- Kennedy van Dam Eric Multitel ASBL Administrateur Système - Ingénieur Certifié RedHat Url:http://www.telecom.fpms.ac.be Mail: eric.kennedy@telecom.fpms.ac.be