http://www.bebits.com/bob/16929/nachschalt.php?id=643&version=0.67&softwarename=Lexmark+5700%2F7000+Driver.
If it all doesnt work then just try http://www.bebits.com/app/1653, it will take you to the download page which the bit you need is about 1/2 way down the page.
Gary
November 2007