Stair Stepper

I feel like I need to get one of those darn stair stepper machines.  I am gaining more and more weight, mostly due to the places that I have been eating at.  I really do not want to gain weight, but that is what is happening.  The only thing I can do is try to go and workout more, however, that is becoming more hard.  I wish I could just get a all natural fat burner.  That way my fat would just burn away in globs and go away forever.