Hi Sandy, I like this but can see your perspective problem. I use CS3 too and I think you'll find that if you go to 'Filter' - 'Distort' - 'Lens Correction' - 'Transform' - 'Vertical Perspective', you'll find that should do the correction. Hope you find this useful!
PS. Should have said for you to use the slide until you're satisfied then you have to 'Flatten Image' afterwards