NVCC and Visual Studio 2010: When?

Accelerated Computing CUDA CUDA Programming and Performance
1

nvcc fatal : nvcc cannot find a supported cl version. Only MSVC 8.0 and MSVC 9.0 are supported

2

You can use the CudaVs2010.exe tool that I posted on this other thread. That will let you compile CUDA projects on Visual Studio 2010 RC.