I have installed GPSBabel on my W7 machine. I see a window in which I can specify input and output files. so far I have converted 1 .osm file into a .gpx file. In the given link to GPSBabel I see an example with parameters "gpsbabel -i gdb -f ways.gdb -o osm,tag=“highway:motorway” -F ways.osm ".

Can these kind of things be inputted in the windows interface? If so, can someone explain how to do this?