redefinitions... everywhere

http://img593.imageshack.us/i/redefinigger.png/

The picture should say it all. I don't see why this error keeps coming up. Yesterday it was just 2 things saying redefinition error and now today i have 4 more structs claiming redefinition

let me guess..
you're not using
#ifndef __FILE_H__
#define __FILE_H__
..
#endif
or
#pragma once

in your .h files.