TCP's "three-way handshake"

When two computer systems want to "talk" with each other using the TCP/IP protocols, what certain things must happen for communication to take place? At a minimum, include all of the following in your essay answer. What steps are involved in TCP's "three-way handshake" to begin a two-way connection? How is the TCP connection/session ended (what occurs between the two systems)? Explain how TCP is connection oriented.