During the kickstart installation of the CentOS 4.3 systems I recently built, anaconda probed for the video card (Intel 945) and monitor (NEC MultiSync 2070NX). The optimal setting for this monitor is 1600x1200 @ 60Hz. The X server is configured to use 1600x1200, but it is using a higher refresh rate, which causes the monitor to display an error message, and it also locks you out of the on-screen- menu. How do you translate a 60Hz refresh frequency into the appropriate horizontal sync and vertical refresh frequencies in the xorg.conf file? I can't find anything to change in system-config- display. Any suggestions? Thanks, Alfred