Lexmark Z42 (4101-002) / Z43 System Driver for Microsoft Windows XP and Server 2003. Once downloaded, double-click the file to extract the driver. Then, follow the on-screen instructions. This driver must be installed through the Add Printer Wizard. If you have a previous version of this driver installed, uninstall it prior to installing the new driver. Contact Lexmark for Support Information on this file at "http://support.lexmark.com". These drivers can be downloaded from this web site free of charge. However, there will be a fee to cover materials and handling if requested from the Technical Support Center.