What's The Difference Between Adobe Dreamweaver And Fireworks?

They are actually nearly completely different programs. Dreamweaver is used primarily to construct web sites and Fireworks is much more of a graphics program. The only real connection that I am aware of is that you can take layouts in Fireworks and export them to HTML that can then be edited in Dreamweaver (or any other program for that matter). They play nicely together since they are both Adobe products, but they should be thought of as very different in their functionality. You can find a good article on Adobe's forum addressing more specifically what each is best used for at:

http://forums.adobe.com/thread/488358