The Python Path Environment Variable tutorial (http://www.katsbits.com/tutorials/blender/setting-up-windows-python-path-system-variable.php) has had a little tweak to take into account a common question that gets ask in relation to Blender and that's "which version of Python do I need to install, and how do I find out? (http://www.katsbits.com/tutorials/blender/setting-up-windows-python-path-system-variable.php#whichversion)". It's actually quite simple because Blender tells you. If you're struggling with Pythons set up, read the tutorial (http://www.katsbits.com/tutorials/blender/setting-up-windows-python-path-system-variable.php).