py2pchat is about to be born

I've got a working example of py2pchat, my little chat application. It has a nicely behaved GUI, a networking interface and even a nice icon:

 

It can only handle incoming or outgoing messages, not both at once. It doesn't have nice features like file-sharing or file-sending. Oh, and you can't run it unless you have Python 2.6.1 on Windows XP (haven't tested on other versions or platforms). It doesn't have much error checking either, but it doesn't crash.

Here's a little snapshot of two py2pchat instances running on the same computer:

Here's a link to a zip file containg the .py files and the icon.
Any feedback will be welcome! Now I'm going to sleep...