HOWTO Install Printers Under Mac OSX
Mac OS-X Printer Installation
OS X 10.4
HP Colour Laserjet Printers
First, click an empty portion of your desktop, then click Go > Utilities. Double click the Printer Setup Utility, then hit Add. The image below should help you the rest of the way.
Lexmark B&W Printers
To set up a Lexmark printer, follow the same instructions as for an HP printer, except use the configuration below after clicking Add.