Google homebrew wii and you'll find some handy videos and guides how to it.
I got a lend of Lego Indy jones and had to play to a certain level, create a save. Copied the hacked save from the web to an SD card and copied it over the Indy save. Then u play to a certain part in the game and do a button combo to go through an invisible area to get to the homebrew hack.
Once in you run some software that enables you to put some USB software on to use a USB hard disk to copy games to. Then NTSC games dont make any difference.
Something like that but it was about 2 years ago I did it.
I've got a C64 and Amiga emulators running on my wii now