Welcome to the forums!
At first I was wondering why you are using the game port, but then I thought of joysticks and gamepads... It's rumored that in Longhorn Microsoft is dropping support for the game port all together.
I'm not sure on how to fix this on Windows x64 or Longhorn, but i do knowiece of hardware these days that plugs into a USB port and has a 15 pin connector on the other end usually called a USB JOYSTICK ADAPTER. They are made for notebook users...
Here is a popular one:
Belkin Joystick Adapter - DB-15 - female - 4 pin USB Type A - male - 8 in - F3U200-08INCH $5
Roughly $5-$8 and you won't ever have to deal with driver issues in the future!
Here is a picture of one of the adapters: