Even easier - download the DirectX End-User Runtime Web Installer from the Microsoft Website http://www.microsoft.com/download/en/details.aspx?
After I installed it the d3dx9_43.dll not found message disappeared and I could run 3ds.
Well Mr. Ramdass, as you must know Windows 8 Pro has a more recent version that this one, so, this couldnt solve the problem.
I assume Autodesk tested all version first of letting them see the light, this is causing a lot of problem a loose of time.
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