I used to use Flash/Dreamweaver/Fireworks quite regularly so i know a bit but its been a while so im not saying this is definately the way to do it.......
I seem to remember there was an option to "Open Project" once in Flash, possibly in the "File" menu??
I think if you were to do this you would then be able to edit the individual sections/items. Like i say i havent used it for ages so i may be wrong but if that is any help then ill be chuffed.
If you still havent sorted it by tonight when i get back from work ill fire Flash up on my PC and find out exactly how to do it.
Also somewhere you might get more help is
www.pcformat.co.uk
There forum is very helpful and usually has a quick response.