How Do I Set Up My Wii 4.3U To Play Backups Off of a USB? (Already Have Homebrew Channel)?

I have previously installed the homebrew channel onto my wii w/ firmware 4.3u and i need a good tutorial with plenty of information on how to install all of the custom ios's and all of that for whatever i need to do to be able to play backups of wii games. I have done nothing except get homebrew channel and bootmii and get a few emulators so far.