This program as is - is worthless. You can achieve the same thing by making a simple HTML file with thumbnails on it that are linked to bigger pictures. To make spgm somewhat useful you need to download a 3rd party application called sgpmAdmin, which supposedly works with spgm to make thumbnails, folders, etc. But it doesn't work. When spgm updates, spgmAdmin doesn't know and doesn't update also. Spgm should have been designed with an admin section from the start by the same person who made spgm.