Resco Viewer is a powerful photo viewer and editor. You can use it to not only organize your photos into albums and create custom slideshows, but also to do basic editing operations such as adjusting brightness / contrast / gamma, cropping, resizing, rotating an image, etc. It is a great tool for creating slideshows with great transitions and amazing sound effects and musical backgrounds. Other functions include: encryption, global color changing, assigning photos to contacts, etc. The program costs $24.95 but you can download a 14-days trial version from www.resco.net/palm/photoviewer. It is compatible with most PDA devices and supports JPG, GIF, PNG, BMP and TIFF image file formats.