This is for the Parex Wireless Mouse Remote Controller IR9708, but might work on other Parex devices (like the 9703, but I'm not sure). This is a guide and registry file for making this product work - it's very simple and easy to follow. I know it works on Windows XP, and I think it will on 2000 as well. I make no claims as to its full usefulness! But it does work for me. Enjoy!