The Surveyor extension that you purchased will still work, you can continue to use it. We have discontinued selling the product, but that does not mean you cannot continue using it in the Dreamweaver versions that it is was originally supported in.
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.