You have to add the correct directories to c++ so it knows where all of DarkGDK's file are located, so you can use it.
So that being said, you have to click the drop-downbox in the top right hand side of that window and select:
Include files
Now click the icon which looks like a folder ->
this creates a new line for a directory path to be entered in.
As you can see below I've added the
darkGDK 'include' directory and the
Microsoft DirectX 2007 Augest SDK 'include' directory however your paths may be different:
C:\Program Files (x86)\The Game Creators\Dark GDK\Include
C:\Program Files (x86)\Microsoft DirectX SDK (August 2007)\Include
NOW you need to do the same for:
select
Library files in the drop down box.
Click the new entry / line button. I have added two of them:
C:\Program Files (x86)\The Game Creators\Dark GDK\Lib\VS9
C:\Program Files (x86)\Microsoft DirectX SDK (August 2007)\Lib\x86
Again as you can see these are the DarkGDK library files, and the Microsoft DirectX 2007 Augest SDK library folders.
That should be it.