multiplayer noob help!!!!!!

[emp]

Can I play with my friend who is in the same room without being online?
If so can u tell me specific details on how to do so?
i have a router and we are both connected but he can't play online (old file not found error). so can i use network?

[chickendippers]

Sure, there's a LAN mode. Can't remember exactly how to set it up, but I'm fairly certain the option's under the Multiplayer menu.