Apple ColorLaserWriter 12/600PS - Manual (Page 356)

6 Close the PrintMonitor Documents folder.
7 Open the Extensions folder in the System Folder.
8 Drag the three files—Desktop Printer Extension, Desktop PrintMonitor, and Desktop
Printer Spooler—from the Extensions folder into another folder on your hard disk.
9 Choose Restart from the Special menu to restart your computer.
When you print documents now, your Macintosh uses the PrintMonitor
software. For more information about using PrintMonitor, see the next
section.
In the future, if you want to use the desktop printer software again, you can
restart your computer with the extensions off (see step 2 of these
instructions), drag the three desktop printer files (listed in step 8) into your
Extensions folder, and restart the computer.
You can also use the installation disks that came with your printer to reinstall
the desktop printer software.
336 Appendix H