Things You'll Need
Instructions
Download the HackMii Installer. Make sure to save it to a location on your computer that you can find easily. Save the HackMii installer to an SD card to transfer it to your Wii.
Launch the HackMii installer on the Wii and follow the on-screen instructions. The installer should only take one or two minutes to install completely.
Transfer the ISO for the Wii game that you want to the SD card. Insert the SD card in the Wii, and open it from the Homebrew channel.
Play the game through the Homebrew channel.