due to im in a good mood, sure i'll spoonfed u a bit.

there are several region, iinm 4 right guys ?

Korean
US
Japan
Pal

It is recommend getting the US version cause the game is easier to find. and US is yea, mostly US game, so don't expect any japanese game on US region Wii

to be more safe again, just get Wii from this guy
http://forum.lowyat.net/topic/976187
cause he is selling official wii.

Soft-mod and Hard-mod is Wii modification, which is use to play several homebrew. But it is wrong to discuss about this cause may lead to piracy. so pls don't mod your wii.

the firmware can be check thru wii system menu.