Continuing my single sign-on efforts, I'm adjusting things a bit - incorporating NIS+Samba+LDAP on the server. I found an Ubuntu-based document that gives step-by-step instructions for my things, and seemed to work as I was adapting some of the items to RH/CentOS. Its url is: https://help.ubuntu.com/community/LDAP-Samba_PDC_(for_Linux_and_Windows) There are other similar documents for other Unix variants, including FreeBSD. Just search on http://localhost/phpldapadmin One of the key items it mentions is http://phpldapadmin for complete web-based, graphical management of ldap. This, obviously sounds great, but I couldn't find a similar document for CentOS/RHEL 5. Fedora 1 is the closest. It would be geat if someone could find one for a modern CentOS/RH distribution. Thanks. Scott