Hi Tom,
You should be able to create a new, blank gps file, (use File->New) then have PhotoFusion use that file.
Point to your photos with the JPEG directory, and make sure "place pictures as waypoints" is checked (it should be by default). When you hit Begin PhotoFusion it will notice that you have EXIF coordinates already in your files and ask if you want to override them with GPS track data. Hit "no", then you should see all your photos come in as waypoints in the new file. Hit the photo toggle to see the thumbnails, etc.
The web page generation part of photofusion should be ideal for creating an offline interactive map -- no internet connection needed or google maps dependency.
Good luck and let us know if you have any other questions.