Photo enlarging slideshow

Hi guys!! I hope you all know I love you and what you do for us aspiring designers, you could not know how helpfull you trully are!!!
I have a question regarding a slideshow and AS.
How would I go about creating a slideshow that moves from right to left starting small (4x7 inches) and enlarging to double its size once it has slid into the larger viewing area? The slideshow would be controlled by a left and right scroll button. if anyone can help I would be eternally thankful.
included is an swf example (sorta)