So this is a full guide on hacking the wii.

What you need:

FIRST

DO NOT EVER UPGRADE YOUR WII VERSION UNLESS SAID OTHERWISE AT wiibrew.org !!!!

NOW On to the real hacking

you need to backup you wii save game data for the twlight game. so make sure that your SD card is in your wii and go to Wii -> Data Management -> Save Data -> Wii

Now copy the game save to the SD card.

put the sd card into a camera or or memory card reader if you have one and copy the game save to the computer by copying the “private” folder to the computer.

Europe/Australia (EUR) RVL-RZDP-0A-0 JPN /private/wii/title/rzdp/data.bin Twilight Hack
Asia (JPN) RVL-RZDJ-0A-0 JPN /private/wii/title/rzdj/data.bin Twilight Hack
America (USA) RVL-RZDE-0A-0 JPN /private/wii/title/rzde/data.bin TwilightHack0
America (USA) RVL-RZDE-0A-0 USA /private/wii/title/rzde/data.bin TwilightHack0
America (USA) RVL-RZDE-0A-2 USA /private/wii/title/rzde/data.bin TwilightHack2

use that table taken from wiibrew.org . Copy the correct folder to the private/wii/title folder. You will know which one to copy by looking at your twlight game cd. On the data size of the cd, in the center there will be a serial. Depending on your region and serial, you need to copy the corresponding folder.

download the homebrew channel from the link above. you need 7zip to extract it. 7zip is totally free unlike winzip or winrar, so google 7zip. copy everything from the archive to the root of your SD card.

Now put the SD card into your wii. Put in the twlight game. run it. now select the game save you need. if the last digit of your serial on the game is 0, select Twlight Hack0. If it had a 2 as the last digit, Twlight Hack2 is what you need.

Now go twards the guy, and BAMM, it will install. follow the onscreen instructions and you have hacked you wii AND have the Homebrew Channel!