Maybe this monitor is adapting itself automaticaly from the signal it received from the graphic card, then kept these settings. The w98 machine may had an old graphic card that didn't send good signal to the monitor and prevented it to adjust. The XP machine, obviousely running on more recent hardware sent a signal that was interprretad properly by the monitor for auto-adjustment. It's not XP or w98, it's the hardware that comes with it. Indeed there are no driver for monitor, keyborad, loudspeaker, microphone or mouse. Maybe you would want a driver for the case? I'm sure some manufacturer have thought about that yet!