Right-click on My Computer, go to Properties, Hardware, Device Manager, Ports (COM & LPT), Printer Port (LPT1) (*If it shows up as ECP printer port, see below), Port Settings, and choose Use Any Interrupt assigned to the Port and Enable Legacy Plug and Play Detection. Hit OK a couple of times and reboot.

* If your Printer Port shows up as ECP Printer Port, you'll need to go into your BIOS and change the mode to EPP.

To get into your computer's BIOS, you'll need to reboot (or turn on) the machine. Immediately when you see the bootup logo or memory/hard drive check, press the appropriate key (which varies from computer to computer - check your computer's documentation if you're unsure) until it enters the setup. This will be before Windows boots, and typically it only waits for 1-2 seconds for you to press the key. The most likely keys are DEL, F1, and F2, but could also be any of the F-keys (you can usually press multiple keys at the same time if you're unsure.) Within the BIOS, you should select Integrated Peripherals. If you don't see this option, try Advanced, and within this menu, look for I/O Configuration, Peripheral Configuration, or something of the like- it varies from system to system. This is where you can change the parallel port mode to EPP (not ECP+EPP). Then follow on-screen instructions on how to exit and save changes.