They are scripts, you have to install them.
If you haven't installed Blender using the installation directory, uninstall what you have currently and either re-install using the installer that you used before, or you use the one that Roach includes in his zip, and when you are installing, select the "Used the Installation Directory" bubble when selecting between installing to AppData or the Installation Directory. Then you take the scripts and put them in C:/Blender Foundation/Blender/.blender/scripts