Hi there!
I am afraid Miriam is correct.
I just visited the Lexamrk site and as far as I can tell your model does not have a compatible driver for Mac OSX:
http://downloads.lexmark.com/cgi-perl/downloads.cgi?ccs=229:1:0:383:0:0 - there is no work around, unles you can find a "similar" model that does have a driver for Mac's and try that. I have done that for other printer, i.e. used another driver to make the printer do something it may not have been designed to do etc etc etc...
Rick
iMac G5 iSight 20" - 30G iPOD & Hot Pink Nano 4G - WD 500G FW - Mac OS X (10.4.8) - HP Pav 15" WS and Toshiba Sat 17" WS LP's - Canon 20D & A620 Kodak P880