Instructions
Download the PlayStation 3 Windows driver from the Motion In Joy website. Separate versions are available for Vista 32 and Vista 64 users. If you are unsure which version of Vista you are using, view your system information within the Control Panel. Once the driver has downloaded, run the ".exe" file to install the driver. Follow all on-screen prompts as necessary.
Plug your PS3 controller's USB cable into a free port on your computer. Your computer should detect the controller automatically. If not, press the "PS" button on the controller.
Launch the Motion In Joy gamepad tool. From here, you can adjust controller settings and enable DualShock mode. You can also test the controller's vibration abilities. Once all controller options are set to your liking, close this window and begin using your controller.