Vclaw
2
There is an OSM map with French names here: http://toolserver.org/~osm/locale/fr.html
Or you can render a map yourself, showing the French names. How to do this will depend on what operating system you are using, ad how large a map you want etc. Some details here: http://wiki.openstreetmap.org/wiki/Rendering
Also see http://help.openstreetmap.org/questions/3403/easiest-way-to-render-maps-with-custom-language