Python 2.7 - ImportError: No module named Image

Python 2.7 - ImportError: No module named Image

Recently, I have been studying OpenCV to detect and recognize faces using
C++. In order to execute source code demonstration from the OpenCV website
I need to run Python to crop image first. Unfortunately, the message error
is 'ImportError: No module named Image' when I run the Python script (
this script is provided by OpenCV website). I installed "python-2.7.amd64"
and downloaded "PIL-1.1.7.win32-py2.7" to install Image library. However,
the message error is 'Python version 2.7 required, which was not found in
the registry'. And then, I downloaded the script written by Joakim Löw for
Secret Labs AB / PythonWare to register registry in my computer. But the
message error is "Unable to register. You probably have the another Python
installation". I spent one month to search this issue on the internet but
I cannot find the answer.
Please support me to resolve my issue.
Thanks, Tran Dang Bao