I'll be better able to answer this when I get home, but the Readers Digest version is:
Flash comes with it's own scroll bar component. Once you place one of the scroll bar components, you are then able to edit each element of the scroll bar. This is what I did for
Blooming Rose . If you flip through the first few page, you'll see that some of the pages have scroll bars that I redid to fit with the style of the page. When I get home, I'll try to give you a more detailed explanation, or you can just look in the flash help file under scroll bar component. Unless, of course, this isn't what you are talking about, in which case you should disregard this post.