If you google the keywords [Windows PS3 Controller], you will find everything you need.
There is currently a program out to emulate your PS3 controller as any PS controller as well as a Xbox controller.
Emulate the Xbox controller using the program
Launch the game
Options > Keyboard Mode > Advanced Settings
Click the Xbox preset button at the bottom right section of the menu.
Ok
Ok
Enjoy!
Mouse + Keyboard is still better though.