Replying to Unreal Tournament lan multiplayer game

hola hola

So im trying to play UT with my brother by setting up a LAN server. It seemed very easy at first but we havent been able to connect.

So, first of all, do I need to set up a network before hand and have both computers connected? or can I just create a LAN server and then expect him to join it?

I've googled this, but I would reeeallly appreciate if someone could give me a quick/clear/for dummies explanation of how to play a wireless multiplayer game?

gracias.