Library issues with OpenCV

Question

Hi,

When I downloaded OpenCV and installed, In the lib folder the files are of the format "libcv200.dll.a"

I don't know if they actually need to have a .lib extension.

I am working with Visual C++. When I included all the Additional Directories as specified in the OpenCV documentation, while building a project, I get this error;

Error   1   fatal error LNK1104: cannot open file 'cv.lib'  

Please help, I have just started working with OpenCV

Thanks