Motocross Jump Design I Want To Build A Motocross Track!?

I want to build a motocross track!? - motocross jump design

As I'm a newbie! You do not want to jump on tables. Can you tell me what big and small, that I come in small ...? I have over 5 acres on this link, he painted not go the design of my yard! http://fr.tinypic.com/m/656169/1 tell me where squeaks Burma, and tabletops. Maybe you tell me how I can configure it, .. What a lot!