Installing and linking OpenCV 2.4.3 with Visual Studio 2012

After a long period I'm back into my experiments. So I was planning from where I have to resume all, so selected OpenCV. After 2 years again going to work with OpenCV. This post I'm describing the OpenCV older version with the VS 2012 in a very simple step by step procedure. Those who are using OpenCV latest version like 2.4.9 no need for these tutorial, it already have with the build for VS 12. you can simply add the build directories as you have done earlier. Most of the peoples attracts to OpenCV very quickly but the lengthy procedures for setting it up will make them lazy and quit studying it. I'm describing it in a very easy way so that anyone can build application by linking OpenCV.