here you have possible printer drivers (should already be included iirc)
http://gimp-print.sourceforge.net/
here is a quick howto
http://linuxprinting.org/cups-doc.html
here is anotherone especialy the part under;; 1. 3. General printer setup with CUPS
http://linuxprinting.org/till/printi...orial/tut.html
As for the ATI card, lokk at ATI's page, they do have linuxdrivers.