There are many many different 360 controllers out there. Fortunately, there are people out there who can help you out. Once you have Tattiebogle installed you can add support for more controllers.
After installing Tattiebogle like described in the last step for the wireless controller, download this link
and run the command script to update Tattiebogle. This comes from Shoryuken forum member EddDeDuck. The forum post I found this is here
(Note: found out the link for the command script is now broken. File attached to this step)
You will also need the Joystick Mapper app from the App Store to make this work.
OK, that's it. Have fun.