The best one, Auto-Stitch, lets you join images to create panoramas. Let's say you wanted to take a picture of your house, as well as the homes on either side of yours. You could take a photo of each, and then let the program piece them together into one wide-angle image. The second new feature, called PhotoTapestry, is primarily a snazzy special effect. It takes your image and recomposes it using thousands of tiny, smaller pictures.
Intricate images tend to come out looking like mud.
While PhotoSuite III has lots of features, you're fairly limited because its design is primarily aimed at novices. In other words, you're protected from the nitty-gritty of photo editing by the friendly interface. If you're a little more experienced at working with images, you may want to consider this next choice. And even some pros love Paint Shop Pro, preferring its intuitive interface over higher-powered products such as the venerable PhotoShop. In fact, this is my image editor of choice.