*prepare cat5/5e/6 network cables
*prepare 10/100 network hub or 10/100/1000 if computers are using Gigabit network card, as many ports as u need.
*set computer's network settings to obtain IP address automatically
*connect utp cables to computers and hub
*fire-up your computers, load your games, host a server and let your friends connect...
mao ni basics nid nmo kelangan...
additional info:
pwede pud ka mag add ug router aron mas dali ug mas sayon mahatagan ug IP address ang inyo mga computers