If you upgrade your LaserWriter® driver with the Custom Install option, and are using AppleShare® Print Server version 2.0 or 2.0.1, you need the Laser Prep file which is included in this folder.
Copy the file to the System Folder on the Macintosh that runs the AppleShare Print Server software. (Drag the Laser Prep file from this folder to the appropriate System Folder.) It is not necessary to copy Laser Prep to any other Macintosh.