Hi, I am new to this site and i realized that its a cool area to get the queries solved. I appreciate all you guys for the same. I am a Windows Vista user. Two days back i installed Age of Empires III on my same computer. There was no issue while installing the game but after that i run the game to play, my system gave me an error message stating "The file d3dx9_25.dll was not found." I have never seen this kind of error before. Do you guys have any idea how to fix this error ? Please let me know too.