View a .pbf file

Does anyone know of simple windows viewer for .pbf files? (NOT .pdf).
I've downloaded the OSM Aust. continent data in .pbf format from Geofabrik and want to be able to easily view maps on a Win7 laptop when there is no sat or cell service.
If there's a better way I'm all ears. 

Thanks,

We would like to ask for more information about what you are talking about.