If the PrintMonitor is in the Extensions folder, the Installer on the
Printing disk will indicate that you don't need to update. The Installer
on the Install 1 disk will allow you to install a specific driver using
Customize. Remove the PrintMonitor to do an Easy Install.
There's a good reason for this. The Installer on the Printing Tools disk is
for System 6. The preferred method is to use Customize from the Installer
on the Install 1 disk.