Things You'll Need
Instructions
Plug the end of the Rock Band guitar controller into the PS2 end of the USB adapter. You can find PS2 to USB adapters/converters online or at local electronics and game system accessories stores.
Connect the USB end to an open USB port on your computer. The computer automatically recognizes the device. If not, look at the documentation for your adapter and see if you need to install any additional software or drivers on your PC in order for the adapter to function properly.
Click "Start," "Internet Explorer." Download a keymapping program for free, such as JoyToKey. Install the program to your desktop. Then double click it to open it. Use the key mapper to set up what actions you want to happen when you push certain buttons on the Rock Band guitar controller.