Try gathering the drivers your self.
As your hardware is quite old, you may need to use older Vista drivers to get it working.
Make sure that you select the propper 32-bit or 64-bit drivers based on your OS.
If you can not find a driver, Google it!
As the manufacturer no longer supports it, and it uses legacy components, it is possible that drivers do not exist.
If this is the case, start saving for a much needed upgrade.