I suppose that you could accomplish what you want to do with an Airport, but probably also with an Airport Express, or, even cheaper, a 3rd party wireless router, Linksys is good. How do you want to set the network up? If the computers have wireless, you could just hook up the wireless router to the internet connection, and share from that. If you need to use wired connections, make sure that the router has enough ports, I believe that the Airport only has one extra port..