MSN IM Doesn't Work on any of my Macs... Strange

[gusapple]

So, I have a Mac and a PC. Both are connected to my Airport. However, i cannot get MSN IM to work on my Mac. I thought that this was isolated to only my Mac, but when my friends came over with their Macs, they couldn't get on either. (They could at home) Any ideas?
The problem is that it "cannot connect to server" no matter what. I have tried Adium, Messanger:Mac, and aMSN with no luck. Any ideas?

[steveza]

You got me on that one. Have you tried with a wired connection rather than wireless (shot in the dark).