[eluser]ELRafael[/eluser]
Ok, maybe in the Lounge section, but i think that you'll find answers... Community always try to help.
What you can do (and works for me) is put the design elements inside a commom directory
Website
|-system
|-application
|-public
|-css
|-images
Then, when you will create a new website inside the Dreamweaver, do this:
Site - New site - Advanced
In "Links relative to:", choose Site root.
For me works fine :-P