Can you upload a copy of your PNG file somewhere. I can't really understand what you are describing. Perhaps if I could see it I could help.
so this it is. I'm not really familiar with .png files, but I assume, that you can "experience" effects like mouseovers with that, right?
So the problem is, when you roll with your mouse over team, three names appear. Now I want the background of these names to change again to a different colour, when the mouse is moved over these names. I hope you understand what I mean.
I can't make heads or tails of all those pages and layers and states. :-) The way I would do it is to use the buit in pop-up menus, using the image feature, but then switch the images with my own after it was exported. Just remember to give your images the same name as the original ones.
Frankly, it would be best to export all the images from Fireworks, and then rebuild the pages in Dreamweaver.