Instructions
Download the ds3drv_1.02 driver to your desktop. This can be found in the Resources section.
Connect your Dualshock 3 controller to your PC with its accompanying USB cable.
Click the "Start" button in the taskbar and select "Control Panel." Click "System" and select the "Hardware" tab. Click "Device Manager."
Click the + symbol near "Universal Series Bus controllers." Select the Dualshock 3 controller.
Click "Update Driver". Select the driver you downloaded in first step. It should be on your desktop.
Click "OK." Your Dualshock 3 will now work with any applications that support USB controllers.