Start Blender and install add-on_batch_render_windows.py as a Blender Add-on. A new tab called Batch Render should show up in the Tools region (toggled on and off with the shortcut 't'). On at least ...
download the .bat file using a text editor, and replace the 3 variables at the beginning of the file blenderfolder = The folder where blender is located, for example C:\Program Files\Blender ...