Using Action Replay disc, SD Card Adapater and a SD Card you can boot homebrew software like emulators and games on your Nintendo Wii without the need to open up the console and install a modchip.
-SD Card Adapter (Official or SD Gekko)
-Compatible SD Card
-A card Reader
First you will want to prepare the SD Card to be able to boot from your Action Replay disc. So insert it into your computer's SD Card reader and then format it as FAT16. To do this right click on the drive letter assigned to the card and pick format. Select FAT (not FAT32) as FAT under Windows is FAT16.
Unrar the attached file to a folder on your computer and then use the Command Line Interface to go to that directory. Next go to Start -> Run and type cmd.
Using the cd.. and cd commands, go to folder you extracted the file.
Type "sdpatch.exe (drive letter)"
ex. sdpatch.exe d:
Now you need to copy the "sdloader.bin" file from the directory you extracted the file in the root of theSD Card. After this you can fill the card with various homebrew games, applications and emulators.
After preparing your SD Card insert it into your SD Card reader and plug into memory card slot A. Next pop in your Action Replay Card into slot B and the Action Replay disc into the Wii.
When the Action Replay boots up pick the USA flag and then ADD NEW GAME. SDLoad is the game name and push done. Then enter (m) as the code name. Enter the following code:
Then select ADD NEW CODE and name it SDLoad and enter the following code.
Now select the code named SDLoad and check the box next to it, press Start and open and close the lid of disc drive when prompted. Then SDLoad starts up and you can now select which homebrew game you wish to boot.