I'm not sure if this will work Pre Leaked PR1.2 Maps, but: Code: Nokia-N900:~$ dbus-send --dest=com.nokia.NokiaMaps --type=method_call /com/nokia/maps/MapPlugin com.nokia.Navigation.MapPlugin.ShowPlaceGeo double:<latitude> double:<longitude> uint32:5 Will do the trick, where latitude and longitude are in decimal degrees. Originally I thought the uint32:5 represents zoom level, but apparently not.
Nokia-N900:~$ dbus-send --dest=com.nokia.NokiaMaps --type=method_call /com/nokia/maps/MapPlugin com.nokia.Navigation.MapPlugin.ShowPlaceGeo double:<latitude> double:<longitude> uint32:5