Adobe aims to make it less confusing to design Web pages with CSS and other tricky coding elements.
Dreamweaver provides shortcuts to code within the Properties panel and with the Code Navigator. This could be especially helpful when dealing with dynamic pages.
As with the other CS4 applications, there are more options for rearranging, resizing, stacking, and collapsing panels that connect you to features and assets.
With Photoshop Smart Objects, you can drop PSD files into Web pages without losing track of source files. And you can drag and drop SWF files into Dreamweaver pages.
Like other CS4 software, Dreamweaver lets you customize work spaces and then access them from a pull-down menu in the upper right corner of the interface.