somehow just can't get the GPS part to work, though I installed Google Maps after installing Footprints.
Could you provide a bit more explanation on what you are seeing? In the interim;
1) Does the GoogleMap button (pushpin on a grid) appear when selecting a Footprints image from within Footprints.
If the pushpin is not present, the GoogleMaps executable may be missing from the .\Program Files\GoogleMaps folder. Exit Footprints, try copying the EXE to this location, restart Footprints to see if the pushpin button appears.
2) The pushpin appears but GoogleMaps is not locking via GPS
Does GPS functionality work when you launch GoogleMaps directly and select the Use GPS option and set the GPS Option to "Managed By Windows"?
3) Other Navigation software
Is there other navigation software installed on your device?
HTH,