Copy dgVoodooCpl.exe from the dgVoodoo zip into your game folder.
Inside the dgVoodoo zip, open the folder and copy the three DLL files ( D3D8.dll , D3Dlmm.dll , and DDraw.dll ) into your game folder. File: Beachhead.2002.zip ...
If your .zip file contains the full game, follow these general steps to set it up: Copy dgVoodooCpl