How to play Heroes of Might and Magic III online via Hamachi?

I haven't been using Hamachi lately because the connection is constantly bad (blue color) instead of green. I'm quite happy with the TV.

Well, what does the blue color have to do with it? I've played for a long time, and the blue color was in 95% of the games, and everything was fine with the connection; yellow is the real problem... :D