Microsoft Visual C# 2010 Express error

Hi there,
I have this error with DirectX and I cannot solve it. My researches on the Internet have zero results and I can’t get rid of it. Does anyone have any idea how can this error be solved? I did something wrong in my PC?
Thank you!

Microsoft Visual C# 2010 Express
A reference to ‘C:Program Files (x86)Microsoft DirectX SDK (June
– 2010)Developer Runtimex64d3dref9.dll could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.
