Thanks guys for ur enthusiasm !
@rambaldi: If I would be a university student I would know what to do, but Im still Highschool.
I gonna send another request to Microsoft today again with something else attached. Then i gonna call them in a few days.
I once asked my Tech-Department in school, but they are kinda stupid (Im better at SQL then they are O.o) and didnt get at all what a edu-email is ...