Instead of using Flash Catalyst, I would use Flash Professional. It has many features, both with preloaded and custom scripts. To start, you can set an image for every scene, then use the timeline to alter the amount of time the image will display. Each image is its own scene, so it will transition from image to image. Also, you can try an on-click Action-script function where clicking the stage of the flash object will transition the scene.
This may not do special effects, but its a good start and you can build up from there (as well as being easy to add or remove images/ scenes). I hope you consider my advice, since I do know how to use the program (future Flash Certification).
Last edited by Taro; 05-14-2012 at 10:54 PM..