In Windows, using the setup icon in the main group: set your video controller to Compaq Advanced VGA 640X480 256. In the control panel, click on the display icon set your monitor to the type of monitor you have. Must support SVGA. 800X600 should now be an option. A couple words of warning. The internal monitor does not support the mode. Therefore, you must place the unit in external mode before you set it ot SVGA and must set the resolution back to 640X480 when you leave. Otherwise when powered up, the monitor will switch back to the internal driver but the pen/mouse calibation is off as it is thinking 800X600. You can still use it but you will have to offset the placement. All the drivers should already be there. Hope this helps, Reno "Pittner, Reno"