I tried to install prison. I tried to install prison tycoon 3 it apeared to install then when i

Question

I tried to install prison tycoon 3 it apeared to install then when i tried to run the game a little sign popped up saying "d3dx9_25.dll was not found can not run"! Then another sign pops up saying the game may have not installed corectly try installing it again. So I uninstalled and reinstalled the game 4 times with the same results as the first time. What else can i try?