I would like some instructions on hooking up 2 computers for networking , sharing files, printer. The 2 machines OS -are linux-one machine as ubuntu 11. The other is fedora10. They both have nic card and they are connected to a router. Could you tell me how?

This should help (http://www.1earthadventures.com/2008/02/06/techie-stuff/how-to-connect-ubuntu-linux-to-a-microsoft-network/)