MySims Cheats :
At the pause screen, enter into the Wii remote: 2, 1, Down, Up, Down, Left, Left, Right, Right. This will bring up the password entry screen!
spEcial outfits and items
I don't have this game, but I just found the cheat in this cheat book thingie I have.
Did you know that there's a hidden password system squirreled away inside MySims? To reach it simply bring up the pause screen and input the following on the remote: 2,1,down,up,down,up,left, left,right,right. A keyboard will now appear. Enter the following codes to unlock new items: