I need to know how

Here are some really helpful link some with diagrams

http://www.xbox.com/en-US/support/systemsetup/xbox/console/connecttotv-vcr.htm

http://www.monstercable.com/monstergame/utilities/hookup/xbox_hookup.pdf

Hope these are helpful. The main thing that you want to do is make sure that you hookup the audio/video cables 3 male connectors into the an input on your TV and of course plug in the power cable for your xbox.