Okay it matters, so what should the name of the "Variable name" be? I looked at your image, and there was no sign of the "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin" or equivalent path for the "Variable value".
For clarity, see the red outlined section from this image: http://i.imgur.com/HdGr6EZ.png
For clarity, see the red outlined section from this image: http://i.imgur.com/HdGr6EZ.png