Oki 7300e - Manual (Page 134)

Apple Macintosh 133
In Mac OS X you use the Print Centre to select network printers, not
the Chooser.
Before you can use a printer it must appear in the printer list in Print
Centre.
3. Click on [Add Printer] and make sure that the connection method
is LPR and assign its IP address.
4. Either assign a queue name or check to use the default queue on
server checkbox.
5. Under Printer Model select from the list the PPD file that you
installed earlier for the printer and click [Add].
These are all the steps that are necessary to setup the OkiLAN 7300e
for network printing in Macintosh OS X.