tried this and installing driver for my lexmark 6100 printer but still no luck

.Any help on this issue will be highly appriciated . I have used both options of marking in the compatibilty mode for Xp and as Administrator set up but with no joy with any one of these. i have even tried getting the dirver from Lexmark's site but still cant work.
the printer is shown as default but in device manager have a big red X.Also the computer detects the printr but when i try to print it show sup in the printing document bar but nothing happens with printer.The icon just sits in the tray. Couple of times it gives an error : unable to communicate with printer. I have even chaged the usb cable and diffrent ports.
Please help
