Yeah, I've done it myself. You need to download some program and run it once before you open the emulator. I downloaded two programs on my old computer when I did this because the first one didn't work and the second one did. Their names were something including the word sixaxis, and the other was called motioninjoy. I don't remember which one that actually worked, sorry. I'm so helpful!

edit: nevermind, here's the article that helped me:

http://www.brighthub.com/video-games...les/16035.aspx

So I followed the Windows Vista routine because I was on Vista, and that worked for me at least.