I've never used MSN so I don't know how it establishes connections, but I do have a DI-604... Browse away to your router (should be at 192.168.0.1) and log in as admin. Check under
Advanced and then
Virtual Server. There you can easily translate ports to your heart's content
However, it
might be more useful to configure some stuff under
Applications but I haven't done anything there, so I don't really have anything useful to say in that case.
Err, hope this helped...a little