DirectX conflict on vista?

[Crusader12]

I want to play medieval total war 2 on my vista but it keeps saying D3DX9_30.DLL is missing. I tried to download the file but I don't know what to do with it.

So I figured I would just download direct x 9.0c. however on my comp right now I have directx 10. Will downloading 9.0c screw up my comp and get rid of 10 or will they work together?

Thanks a bunch, sorry if this is the wrong forum

 

[TRDCorolla1]

Try installing this. It's made distributable for Vista:

http://www.softwarepatch.com/windows/directx.html