Useful links
POIEdit
Convert the downloaded .asc file into Destinator .dat, or TomTom .ov2 file with this free converter.
http://www.poiedit.com/index.htm
iGO POI Explorer
Convert, edit, append the downloaded .asc file(s) into iGO's igo.db file with this free converter.
iGO POI Explorer beta 1.0.637
Google Earth
You can view or edit the downloaded .kml file with this free software.
http://earth.google.com/