I am not sure wether i understand you question right but if your question is How does the TCP/IP work? then i would say....
TCP/IP is just a protocol that allows different nodes on the network/Internet to share resources..and without TRANSMISSION CONTROL PROTOCOL/INTERNET PROTOCOL different nodes wont understand each other.
To configure it you will just right click on your LAN CONNECTION and click properties.make sure tcp/ip is ticked then click on it then properties....then from there you can assign each computer with an ip address or allow DHCP to do that for you.
shout if you need more help.