Animated chat

Hi friend, I want to make a chatting like the one in www.ff0000.com How can I acheive that? Review of my trial: I made five swf movies for different characters, and communicated(sent variables:- character._x , character chat string etc.) through local connection. It works ( If I move my character and type a word, that character in all other swfs move and display the word), if they are taken on same computer(even online). But not working on different computers. Result: partially failure. repeats, how can I acheive that?