Need some info

Hello, I have a little network at home and I want to make a P2P utility like limewire or Kazaa. But all I want to do is to make my users connect to each other on my network and share their files with out going to the internet. Can you giude me on where I can get the code for something like that, or if you know of some little program that does that, where can I get it.
Thanks
Jose Daniel Callejas

please email me to radionet@hotmail.com