well, since Wii is out of stock almost everywhere except on ebay, I have no choice but got the Japanese Wii as I really wanna have it. This is what happens. I have my Wii modded by Trustedmod.com, a popular website and trustworthy. The modchip I have is the authentic Wiikey as it is provided by trustedmod. After I got it back, running the config, it seems that the NTSC american GC games works flawless...I haven't tried pal yet. But when I played my Naruto 4, it froze after you selected your character. Or to be more accurate, it froze during the starting battle screen and then the error message popped up saying please turn off the power and read the instruction that comes with the console(the message is in Japanese). Since mine is Japanese Wii and Naruto 4 is the Japanese GC game, it must be compatible with my Japanese Wii. Is that the problem with the WiiKey or is it a bad modding performance?