I just found a new wii key diagram while over at MC forums. There is apparently a new drive board and need another leg re attached.
Here is a link to the rapid share file : http://rapidshare.com/files/48453643/New-Wii_Layout.rar.html
Appoligies if its already been posted but i have issues searching on Wii stuff as the search string is so small (Wii). Please remove this post if it has already been covered