4-Port NIC

Is there a thing as a 4-Port NIC?  I am wondering because I am trying to link my computer, my PS3, and my XBox 360 all together on one network that has access to the internet.  I would also like to be able to control the entire system with my keyboard.  Or am I going to have to go old school, and strip everything down naked (myself not included :smileywink:) so I can build it all into one massive system to work with?  I also want to create a videogame system that is its own system, but that can also play games from all other major game systems.  Please feel free to send me some feedback on this.  Thank you for taking the time to read this.