Things You'll Need
Instructions
Download Wad Manager
Navigate to the QuickJump Gaming Network website (see Resources) using your computer. Select "Wii" from the site navigation area on the right side of the page.
Type "wad manager" into the search bar on the right hand side of the page. Select "WAD MANAGER" from the list of downloads that appears. As of December 2010, the current version is 1.7.
Scroll down to the "Download" button and click it. Your download should begin automatically.
Transferring WAD Manager to your SD Card
Format your SD Card to FAT32 if it's not already. Most newer SD cards use this format by default.
Create a folder called "Apps" in the root directory of your SD card. If you have a softmodded Wii, you should already have this folder.
Unzip the compressed WAD Manager file into the "Apps" folder on your SD card. WinRAR (see Resources) is an unzipping program you can download and use for free.
Remove your SD card after the file transfer is complete.
Installing WAD Manager on the Wii
Insert the SD card containing the WAD Manager files into your Wii's SD card slot.
Turn on your Wii. Select "Homebrew Channel" from the Wii Menu. You should see Wad Manager on the Homebrew Channel's application list.
Select "Wad Manager" and install any WAD files you have.