The House Of The Dead 2 PC LAN?

Hello, someone from the old school who knows how to play in lan, I have tried with a friend but we failed. HELP.

I'm new in this thing of buying original games,also my friends are,but i convinced them of buying Valve complete pack and also flatout 2,with the dream of playing together without using hamachi, but them can't join. I've tried creating the server,opening ports in my router, everything.but it doesn't work. Half life has a "friends" window, but it only works with online servers,if i create they can't join. I don't know if i did something wrong or this isn't how it is supposed to work.