Okay so the source was written in German? Or you just have a German version of VS? Thats not cool.

But anyway, it is saying that you need a semicolon before your brackets on the 1st 8 errors from that picture. I cant tell where without seeing the lines of code but clearly the syntax is backwards to some degree. What language is the wallet written in? (machine language I mean)

Did you include:

#include <openssl/dh.h>
#include <openssl/bn.h>

and do you have openssl installed?

Visual Studio..lel.. have fun trying to compile this with Visual Studio

Jesus.. I will do it when I'm home

It's not so easy compile program for windows, you need install some development suite like Microsoft Visual Studio and know how it works.
It's much easier to compile linux program.