install QJson in windows - 7

I want to install the qjson in my windows machine. I installed the cmake and nokia qt sdk in my window 7 and use the following commands but I am getting the e开发者_JAVA技巧rror..

C:\Program Files\qjson\build>cmake -G "MinGW Makefiles" ..
'cmake' is not recognized as an internal or external command,
operable program or batch file.

The installation directory of cmake is not in your PATH. If you use the installer, perhaps you forgot to check "Add CMake to the system path for the current user"?