Because all error messages are in German and Google doesn't help me to find solutions for German error messages I want to change the language of visual web developer to English.
This shouldn't be too hard, but I just cant find a way to configure the language. Google didn't help me either.
You need to change the culture of your application:
http://msdn.microsoft.com/en-us/library/b28bx3bh(v=VS.100).aspx