I believe you can use a wired controller and just plug it into a USB port. Or you can buy the wireless receiver http://www.amazon.com/gp/product/B000HZFCT2?ie=UTF8&tag=brihub02-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B000HZFCT2 on amazon and then u can use a wireless controller.
This should also be in the hardware section of the forums.