One of the more impressive new features in Dreamweaver CS4 is the ability to work with Smart Objects between Dreamweaver and Photoshop. It's now possible to import a fully-layered, fully editable Photoshop file into Dreamweaver. Dreamweaver will help compress the file by comparing different format choices. And if changes are made to the original PS document, Dreamweaver CS4 will recognize them and ask the user if they want to automatically update the embedded file. Check out these really cool new smart object Photoshop interactions in this Dreamweaver CS4 tutorial.