Ask Slashdot:Changes in Latitude

Topher writes "I've got a Dell Latitude XP 4100C. I got RH5 on there no sweat, but I can't seem to get X running. It wants the horizontal refresh rate in the setup, and says it's VERY important. unfortunately Dell doesn't seem to think it's important enough to tell me. Any ideas on how I'd find out? When I try and run X just guessing the Hrefresh rate, it puts up a zillion tiny horizontal lines on the screen, and I have to telnet in and shutdown. "