HP DeskJet 640 Series Printer Driver
Before you install, create a new folder. For this example, we'll use c:\dj640.
Change directory to c:\dj640
Download the driver to c:\dj640.
Double-click on the exe you just downloaded.
You will see a 3 letter language directory. For example, the English driver will have the directory enu.
In the Program Manager, select File => Run c:\ dj640\enu\31\disk1\setup.exe.
In the Program Manager, select File => Run \disk1\SETUP.EXE.
Operating system(s): Microsoft Windows 3.1