It's easy to setup a 3.4 wii so it can have additional features such as playing DVDs, playing a variety of free homebrew games, and using cheat codes in existing games. etc. Download
Bannerbomb and the
Hackmii Installer. IF there is a folder on your SD card before copying these called "private", rename this "privateold". Then copy over Bannerbomb and the Hackmii Installer, so the contents of the SD card is
SD:/
-private
--wii
---title
----atkn
-----content.bin
-boot.elf
Insert the SD card into the Wii, start up the Wii, and click the Wii Icon in the bottom left of the screen. Then click Data Management, Channels, SD card. Launch boot.elf and you will now see an anti-scam warning. Give it a minute and it will tell you to press 1 to proceed. Do so, and install the Homebrew Channel, and if you want protection against your Wii being bricked (having the functionality of a brick) install Bootmii as boot2.
Your Wii is now hacked, and you can go to
this site to download some homebrew applications.