enable safe texture cache. and use the search function the next time 
people ask the very same question every day it seems, if you have any other question look up the official new super mario wii thread. http://forums.dolphin-emu.org/thread-5415.html
people ask the very same question every day it seems, if you have any other question look up the official new super mario wii thread. http://forums.dolphin-emu.org/thread-5415.html
My Specs: AMD Phenom II x4 940 3.0ghz - w7/Ubuntu 11.04