Getting the Homebrew to Run on Wii

You need a way to get the Wii to run custom application.
1. Get the Twilight Hack.
This is currently the only "soft-mod" way to get you started.
No hardware mod, just a buffer overflow exploit that cause the Wii to load "boot.elf" from the SD card.

2. With the Twilight Hack, install the Homebrew Channel.

3. Once installed, the Homebrew Channel can be used to load your application from SD card without triggering the hack.
The application should be organized in this structure:
- /apps/$appsname/
- 3 files:
- boot.olf/.dol = your custom application
- icon.png = the application icon displayed on the Homebrew Channel
- meta.xml = some descriptions about the application

Read here for detail or update.