How do you configurate network on five computers?

It depends on what kind of network you want to use. If you want to use usual home network you can purchase a wireless router and five wireless adapters one for each PC and connect all pcs to the wireless router. You can use lan connections you have to buy a lan switch with at least 5 RJ-45 ports. You will need 5 lan cables. Wireless configuration usually prefered because it's easier to maintance.

If you want to have a network of industrial class you have to specify you question.