A: 

I think try it.

If it doesn't work, the OpenCV Install Guide says:

C/C++ compiler (OpenCV is known to work with VS2005, VS2008, including Express Editions, and MinGW on Windows, GCC 4.x on Linux, MacOSX and other Unix-like systems).

Visual Studio

MinGW

JeremyP
Thanks. I just found a guide on windows opencv setup http://tommy.chheng.com/development/windows_development_setup.html
Enjoy coding