You can also patch ANY region game to play on PAL consoles using WIU v1.1
I use it to also remove any updates on the disc, and convert any NON-PAL region to PAL
I have priiloader installed and set to region free, but I guess I'm just making sure that it always thinks its a PAL game and it can't do any updates to the console as there is now no longer any updates on the disc
I've been playing JAP and NTSC games for a very long time without any issues, apart from the JAP character set when playing true JAP games, but you can usually guess what does what to play the game
Just looked a bit more on other sources, it just isn't possible at all to play GameCube games via the USB, but you can get ISO's of gameCube games and create your own multi-game DVD to play via normal disc loading
Unless you have the newest black/red wii that WILL NOT play DVD-R's then your stuck with USB loader, unless you replace the internal drive with a new older revison drive that does play DVD-R ... which does mean taking your wii apart. Not a hard job but those screws are damn small and have a habit of disappearing !!