Here’s a utility program called MM-Exporter that does, “Backup utility to save and restore all important settings and data from Macromedia® Dreamweaver®, Contribute® Fireworks® and Flash®” If you need to reinstall and import your settings, this is supposed to make it easy. It is only for Windows. I’ve imported Dreamweaver site definitions using Macromedia’s tedious site-by-site importing process and figure anything that would make it faster is worth a look.