How To print from MAC OS station:
Open your system settings and select the print & scan item,
Press the Plus icon and you will get this screen shot,
Select the IP option, and the LPD protocol, In the Address enter prtl.cs.technion.ac.il server name,
For the queue name , please enter the printer valid name recognized in prtl, and set the Print using : Generic Postscript Printer.
And finish with the Add button.