Sounds like what my one roommate is trying to do. He's setting up an inter-house e-mail on his Linux server so that we can e-mail each other in-house... We are all networked over here... Thing is, it's a 1 story house! The 3 bedrooms on the main floor are within 2 feet of each other in any direction from either door in the hallway, and if I need to talk to someone in the bedrooms downstairs, I can either walk down, or go in the bathroom and shout down the laundry chute...