Just go to your account page and click on "All My Downloads". There is a reset activations button on the top of that page that will do the trick for you.
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.