Soccer Field Positions Diagram

Big soccer game tomorrow!?!?!?!?

My team is playing my old team tommorrow, ive been playing soccer for a few years now but in retarted when it comes to knowing other positions besides my own (left forward), can anyone please give me a diagram of a field and show me where every player is and what their job is just incase my coach is like go play stopper (whatever that is) omg thanx sooooo much!
just naming each player and what their job is works too

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http://www.gurl.com/findout/guides/pages/0,,670735,00.html

Soccer Field Diagram : How To Decide Soccer Positions