IN the insert record behavior, set the trigger to Recordset <your recordset> is empty.
For the error message, use the Dreamweaver show region behavior. this will have a trigger option for recordset <your recordset name> not empty
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.