Read, the Readme that came WITH the file you downloaded. It SAYS it.

Here, I'll quote it for you:

Quote Originally Posted by That README file that came with the Download
Installation:

Take d3d9.dll out of the /PC folder and place it in your "Halo" Directory.

Take d3d9.dll out of the /CE folder and place it in your "Halo Custom Edition" directory.

Then download the DirectX runtimes:
http://www.microsoft.com/downloads/d...a-9b6652cd92a3