LAN is LOCAL...you can use hamachi though, connect to there LAN server and it acts as one even though your friend is still at his house. you just create a user and a network, tell him to download hamachi, create a user and connect to your network (should have some sort of name). going to need to go into network connections and set Hamachi as your first device though. To do that go into Network Connections, hit ALT-H to bring up the advanced menu, (click on the advanced tab) then go to advanced settings. Now under "connections" click on hamachi after its isntalled and move it up to the top then restart your computer.