Help about java chat

I was wondering how can I do a chat program with JAVA. I searched some sample to planet-source-code.com but I did not found one who work correctly. If some one have an example who work or a tutorial about using program over the net than please tell me the url or upload your code please :)

My seconde question is about the java virtual machine. I have it in my computer because I have JBuilder and the JDK but if a firend want to test my program and he doesn't want to install JBUILDER, how can I downloader only the Java Virtual Machine... and please do not give me java.sun.com... I can not find it there!

Thx
Daok

Thx about all these information :) and if you want to share me your program that will give me a good exemple to follow. I will start with a server/client chat program like yours but I want to be able to setup a multi client in an applet who will run on my IIS server.

Daok
(send me your program if you want at : [email protected])

the source code for my chat app. is on my dad's computer. I'll e-mail it to you the next time i'm at his house.

thank you :)