i've downloaded and installed pyopengl.exe and openglcontext.exe from sourceforge and i keep getting the following error:

Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    import OpenGL.GL
  File "C:\Python\Python25\lib\site-packages\OpenGL\GL\__init__.py", line 2, in <module>
    from OpenGL.raw.GL import *
  File "C:\Python\Python25\lib\site-packages\OpenGL\raw\GL\__init__.py", line 6, in <module>
    from OpenGL.raw.GL.constants import *
  File "C:\Python\Python25\lib\site-packages\OpenGL\raw\GL\constants.py", line 7, in <module>
    from OpenGL import platform, arrays
  File "C:\Python\Python25\Lib\site-packages\OpenGL\platform\__init__.py", line 20, in <module>
    import os, sys, pkg_resources
ImportError: No module named pkg_resources

i've checked the site-packages folder and opengl is there along with the gl and glu directories.