Dreamweaver stores the site definition information in the registry, you will not be able to get the information form the files, you must recreate the site definitions.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.