Are you sharing the printer out from your XP machine? If so, it might be the machine acting as a print server that is the problem. Try connecting the printer directly to your Mac.
Also, check to be sure that you are indeed using a printer driver specific to that printer model. Sometimes, when Mac OS can't find an appropriate driver, it will use a "Generic Postscript" driver that in most cases will not work.
I can't seem to find that particular printer on the
Unix Printer compatibility guide charts. Usually you can find a compatible driver with this website if there isn't a native version.
Mac OS comes with a Linux-based driver package for printers known as Gimp-print. You may need to update your gimp-print package to find the right driver:
http://gimp-print.sourceforge.net/MacOSX.php3