Things You'll Need
Instructions
Download the NES emulator of your choice to a computer.
Plug the USB storage drive into an available USB port on the computer. A folder for the USB drive will automatically open on the desktop.
Drag-and-drop the NES emulator file folder into the USB drive folder, then remove the USB drive from the computer.
Plug the USB storage drive into the USB port on the PS3, then press the menu button on your game controller to open the main menu on your television screen.
Scroll to the XMB (XrossMediaBar) menu, then select the "Install Package Files" option by pressing the X button on the controller. The NES emulator will automatically hack into the PS3 system and install itself.