Mapnik rendering

Is there a way to force the Mapnik rendering. I can force the osmarender on, but how to with Mapnik? Unfortunetly just have win, so I can’t render it myself.
Location is around lat=50.9370878899019 lon=6.93808560436013 (cologne).

The FAQ page on the wiki states: ‘The Mapnik layer data is updated once a week from planet.osm’.