Download an emulator install package that can be installed on a Sony PS3. Connect a USB hard drive device or memory stick to your computer.
Copy the emulator installation package to the USB hard drive device. Remove the USB hard drive device from the computer.
Start the Sony PS3 and insert the USB hard drive device into one of the PS3's USB inputs. Select the "Install PKG" option from the PS3's main menu.
Select the emulator installation package from the next screen and the emulator will be installed onto the PS3. Select the emulator from the PS3's main menu to start it and play it using the PS3's hardware.