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Using OpenCV 2.4.2 with CUDA Toolkit 5.0

Hi, I'm writing an application with both CUDA Runtime API calls and OpenCV GPU module function calls. I need to use the new CUDA Toolkit 5.0, but OpenCV 2.4.2 is available on line in the compiled form for Windows only for the CUDA Toolkit 4.2. If I download the source code of OpenCV 2.4.2 and compile it with the CUDA Toolkit 5.0 installed, is there any possibilty that it will actually work? Or is it better to install both the Toolkit 4.2 together with the 5.0 to allow OpenCV to work? I read that when installing the CUDA 5.0 the previous version should be uninstalled... Thank you for your attention!