Product page: http://www1.lexmark.com/US/en/catalo...sp?prodId=3220
CLICK the "Download Drivers" link in the lower left corner to check for driver availability.
I only found drivers for Window 2000 and Windows XP on this page:
So unless Microsoft included support for it with the OS, you're probably out of luck. It's listed as "discontinued"... so I doubt you will find any support for Windows 7 from Lexmark. However, you can contact Lexmark Technical support and ask them.