The OpenLDAP project is located at http://www.openldap.org. Compressed archive files are available from there, or you may use RPMs supplied by Red Hat. The current RPM is openldap-1.2.7-2.i386.rpm. The only major difference between the RPM and compiling the libraries yourself is the location of the configuration files. A default compile and install will place the configuration files in /usr/local/etc/openldap whereas the RPMs will place the configuration files in /etc/openldap. The RPM will also install a startup script in /etc/rc.d/init.d for you. If you choose to build the OpenLDAP package yourself, you will have to generate your own script. It is advantageous to use the RPM for this portion of the setup if you intend to run the GQ LDAP administration GUI on the server machine. GQ requires the openldap RPM to be installed on the machine that it will be run from.