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Go to the "IP" tab. Under this tab, insure that the Protocol is set to "Line Printer Daemon - LPD", the Address is "printer.cis.rit.edu", and that the Queue and Name are set to the appropriate printer ( "guppy" or "sailfish").
The printers will work with the Generic PostScript Printer driver with no difficulties. Now click the "Add" button. Be sure to check the "Duplex Printing Unit"
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