This is how you use a PS3 controller in a 32-bit computer (too see if your computer is 32-bit or 64-bit right click the computer button then click properties)
Step 1: Step 1- What You Need
1. a computer with a 32-bit operating system
2. a usb cable
3. a PS3 controller
Step 2: Step 2- Downloading the Program
i will give the link for the program that is a bit edited (its actually better) because it normally does not bring the local feature.I will be covering the instructions for my edited version not the original. I got it and installed it (took a long time to do it) and if you want you can also get the original download link and instructions.
My edited version: http://www.sendspace.com/file/023pkb
Original with instructions (really hard way)
Step 3: Step 3-installing the Controller
Connect the controller the driver will start installing leave it like that installing, open the Ds3 tool file it wont say that the controller is connected like mine, then click driver manager it should look like photo #2, then checkmark the square then click load driver it should start installing a different driver let it finish.
Step 4: Step 4- Setting Up the Settings
When its done installing click "profiles" it should go back to the menu when it opens it. It sould say in the connected gane controllers "1.Dualshock 3/sixaxis (usb)" (if your controller is Dualshock 3 with sixaxis). When it says that it means that its connected mostly everyone clicks the 3rd mode becayse its most normal then click enable and your done! If you're having some problems click this link: motioninjoy.com
its the original webpage that has EVERYTHING about the Ds3 tool program