Slide Show question

Using Album6. Some of my images are panoramic so when viewed they are 
fitted to the width of the display while the height is reduced to 
maintain the image's proportion.
Is it possible to display these in a slide show with a transition which 
fits the image to the height of the screen then moves it from left to 
right to display the full width. I hope that I am explaining this 
correctly. The effect that I am after is as if taking a 20" long image 
and scrolling it across 12" wide screen from right to left.
I can do that in PowerPoint but PowerPoint has other limitations so I 
can not use it in this case.
Thanks for any help,
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