you would apply tow instances of universal email to the page, one to send the confirmation email, the second to send the registration information.
make sure only the second instance of the universal email behavior has the Gopt Page set.
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.