Adding Lexmark USB Printer In Knoppix Ver 3.1

I'm able to run Knoppix Ver 3.1 with no problems. However, the OS doesn't want to recognize my Lexmark Z25, USB printer.

When I use the "Add New Printer" wizard it displays the "backend" screen with all the choices greyed out. Does anybody know what I'm missing? Everthing else works fine.

Knoppix also doesn't want to recognize ram higher than 128 Mb on my 1.2 Gh AMD system. I use the mem=128M boot command as max even though I have 196nnn installed.

Many thanks...

Butch