wii brick blocker ( be safe if your unsure )
I have seen many posts with concerns about people bricking there wii's
what is wii brick blocker ?
It's a small piece of software that enables you to patch an Iso file before you burn it. A Wii DVD consists of 3 partitions, one of them is the update. The WBB modifies these partitions and replaces one of them without any update. You just have to choose your Iso file, and click Patch, it only takes 30sec... After that you can burn your Iso and the game will launch without an update so you will be able to play your import game.
wii brick blocker click here to download
once you have downloaded the application run it and then use it to browse to and patch your iso before burning
its pretty straight forward
one other way for added protection is to always stay upto date on system updates via your internet connection