There's no split-screen in the Wii version
![frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
which is a shame, I was hoping unlike Goldeneye I'd be able to go online split-screen with CoD, but no such luck
from IGN review (see link): "I've been impressed with how well the multiplayer has performed thus far. I haven't detected many moments of lag, even with games filled with the 12 players that the Wii version allows. One understandable deviation (and one of the only changes) from other consoles is that split-screen isn't supported on Wii. It's not a big deal, but some might care. "
http://au.wii.ign.com/articles/113/1133688p2.html