This software is available on the Apple Support Web site in the Apple Software Updates collection.

From the Read Me:

Apple LaserWriter Software for Microsoft Windows
Additional instructions for using your printer with a computer running Microsoft Windows

This file contains late-breaking news about your Apple LaserWriter printers and printing with Microsoft Windows. Some of this information is not included in your printer manual.


LASERWRITER PRO
---------------
Open the file \LW_PRO\README.TXT for additional information on the Apple
LaserWriter Pro 600 or Apple LaserWriter Pro 630 printers.

LASERWRITER SELECT 310
----------------------
Open the file \LW_SELEC\README.TXT for additional information on the
Apple LaserWriter Select 310 printer.

PERSONAL LASERWRITER NTR
------------------------
Open the file \PLW_NTR\README.TXT for additional information on the Apple
Personal LaserWriter NTR printer.

DISKETTE CONTENTS
-----------------

Root Directory
README.TXT This file

LW_PRO Directory
README.TXT LaserWriter Pro specific readme file

LW_PRO\UTILITY Directory LaserWriter Pro PostScript files to configure
printer options
CONFIGPG.PS Print Configuration Page
FINEPRTD.PS Disable FinePrint
FINEPRTE.PS Enable FinePrint
PHOTOGRD.PS Disable PhotoGrade
PHOTOGRE.PS Enable PhotoGrade
TRAYSWID.PS Disable TraySwitching
TRAYSWIE.PS Enable TraySwitching

LW_SELEC Directory
README.TXT LaserWriter Select 310 specific readme file

LW_SELEC\UTILITY Directory LaserWriter Select 310 PostScript utility.
CLEANPG.PS Print the Cleaning Page

PLW_NTR Directory
README.TXT Personal LaserWriter NTR specific readme file

PLW_NTR\UTILITY Directory Personal LaserWriter NTR PostScript utilities.
CLEANPG.PS Print the Cleaning Page
CONFIGPG.PS Print the Configuration Page

WIN30DRV Directory Windows 3.0 printer drivers
PRINTERS.INI PostScript Printer Driver required file
LW_NTR.WPD Personal LaserWriter NTR
LWPRDM3.WPD LaserWriter Pro 600 with 8 MB at 300 dpi, PhotoGrade Off
LWPRDM3P.WPD LaserWriter Pro 600 with 8 MB at 300 dpi, PhotoGrade On
LWPRDM6.WPD LaserWriter Pro 600 with 8 MB at 600 dpi
LWPRD_3.WPD LaserWriter Pro 600 with 4 MB at 300 dpi
LWPRW_3.WPD LaserWriter Pro 630 at 300 dpi, PhotoGrade Off
LWPRW_3P.WPD LaserWriter Pro 630 at 300 dpi, PhotoGrade On
LWPRW_6.WPD LaserWriter Pro 630 at 600 dpi
LWSEL310.WPD LaserWriter Select 310

WIN31DRV Directory Windows 3.1 printer drivers
OEMSETUP.INF PostScript Printer Driver required file
LW_NTR.WPD Personal LaserWriter NTR
LWPRODM3.WPD LaserWriter Pro 600 with 8 MB at 300 dpi
LWPRODM6.WPD LaserWriter Pro 600 with 8 MB at 600 dpi
LWPRODR.WPD LaserWriter Pro 600 with 4 MB at 300 dpi
LWPROWT3.WPD LaserWriter Pro 630 at 300 dpi
LWPROWT6.WPD LaserWriter Pro 630 at 600 dpi
LWSEL310.WPD LaserWriter Select 310