How do you use a Mario kart wii hack code?

Go on your wii go to settings find internet click and write down your mac address, Go to "please.hackmii .com" and type in your mac address and click "cut the red wire." Move the files it downloaded into your sd card. Make a folder called apps in your sd card. go to "codemii.com/download" and press "here". move the files you just downloaded into your apps folder.

Put the sd card in your wii and go in the message board and keep gouing back until you see a red letter. Press it and install the homebrew channel. Open it up and click homebrew browser. It will take a long time to load but go to utilities and doanload "Gecko os", "code downloader. Put Mario Kart wii in your game slot. Open code downloader and press + on the codes you want and when you are done press 1 and press home menu. Now go to gecko os and launch game. Now you can hack!!