CUDA SDK helps developers to use GPU computing power to c developers. You may find help in SDK about code coloring in Visual Studio. But i am sure many of you have been searching for intellisense for cu and cuh as c files. Here is my solution.

Add c and cuh extensions to NCB Default C/C++ Extensions key under
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\Languages\Language Services\C/C++ path