Problems compiling the gen4 program

Hi all,
I tried to compile the gen4 program with my visual studio c++ 6.0 and
I get several errors with it.
First I tryed the gen4 Project file, but it shows me only the cpp file
in the project and it made none of the settings in the Project menu.
Then I made all the steps as it is shown in the Start.pdf
"Walkthrough: Visual C++ 6 and DLL"
Now the libs are included, the DLLs are at their position, the
settings are done, but I got two Errors.
GEN4.CPP
d:\test\codebase\testprogs\konsole\gen4\source\gen 4.cpp(143) : error
C2065: 'gen4' : nichtdeklarierter Bezeichner
d:\test\codebase\testprogs\konsole\gen4\source\gen 4.cpp(149) : error
C2373: 'gen4' : Neudefinition; unterschiedliche Modifizierer
Fehler beim Ausführen von cl.exe.
I've no Idea, why this happens, has anybody a hint for me, what there
could be wrong?
Kind Regards
Oliver