Yes... the best order to install (if you have all of these extensions) is:
1. Form Toolkit
2. CSS Form Builder (be sure it is version 2.0.1 beta)
3. HTML Editor 3.0.2
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.