website
http://www.motioninjoy.com
video of how to set it up and get it working with a ps3 controller
http://forums.motioninjoy.com/viewtopic.php?f=3&t=1186
I have personally tested it and it works great with my windows7 and ps3 controller but I do not have blue tooth

They also have a bluetooth that you can buy which works great with their application:
http://www.gameaccy.com/bluetooth-dongl ... otioninjoy
If you like your ps3 controller as much as I do and want to use it with browser games/emulators/pc games/others then this is definitely worth looking into. But as a word of caution for those who play around with this stuff is that you can potentially do damage to your system in the process if you are not careful.