If you have Linux you need new NVIDIA drivers, CUDA Toolkit and sometimes GPU Computing SDK is helpfully. When you install in default location, you must add this location to PATH. I added it into .bashrc in ~ (home folder): export PATH=/usr/local/cuda/bin:$PATH export LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/local/cuda/lib:$LD_LIBRARY_PATH If you are using Widnows you must have installed VS2008, new drivers, GPU sdk, CUDA toolkit, and helpfully is CUDA_VS_Wizard v2.0. First you must install VS2008, next GPU SDK, next CUDA TOOLKIT and last CUDA_VS_WIZARD V2.0. You must add into windows environments this lines (I'm using windows xp): CUDA_BIN_PATH -> C:\cuda\bin CUDA_INC_PATH -> C:\CUDA\include CUDA_LIB_PATH -> C:\CUDA\lib NVSDKCOMPUTE_ROOT -> C:\Documents and Settings\All Users\Aplication Data\NVIDIA Corporation\NVIDIA GPU Computing SDK NVSDKCUDA_ROOT-> C:\Documents and Settings\All Users\Aplication Data\NVIDIA Corporation\NVIDIA GPU Computing SDK\C Path -> %Sys...