Lexmark Z51 System Driver for Microsoft Windows 2000, and Windows XP. 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. 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.