These instructions are for OS 10.6.x
Open System Preferences
Select the "Print & Fax" Icon
Press "+" to add a printer
Go to the IP tab:
Protocol should be - Line Printer Daemon - LPD
Queue: "name of printer" - either sailfish or dolphin
The printers will work with the Generic PostScript Printer driver but you will lose some of the advanced features available with the driver.