I think it's possible if you download the internet channel, though I'm not sure. To download the internet channel, you must purchase it off of the wii shop channel for 500 points.
We bought the internet channel. We've gone to the MSN page and even created a new account. But I can't even find where to sign in to talk to people on Messenger. I'm getting frustated.
Thanks. I guess I'll just keep trying. I don't understand why you can go on the internet, go to MSN, sign in and then not get the Messenger window. It's stupid!