first thing you should have is an internet connection
and obviously a ps3 controller and a computer.
Step 1: Downloading the Program to Your Computer
its called DS3 Tool
go to the following link:
its pretty easy to do everything by yourself from here since theres also a tutorial and everything, so ill just write the main things you have to do
go down a little and when you find the downloads, download the latest version, or any other version you want
then click on "follow the instructions"
Step 2: Installing the Program and Setting Up the PS3 Controller
ill suppose you downloaded the latest version, so:
Click on "Latest version"
then simply start doing what the tutorial says, but skip the first point because you already did it, which is actually downloading the program to your computer
install it and then setup your ps3 controller with it
Step 3: When You're Done
so simply open the game and then go to its control settings, and change each control, to the ps3 controller
in a game where "jump" is done using the SPACE BAR on the keyboard, you can change it to be the X button on the ps3 controller, and so on
i hope this instructable helped
comments are welcome.