ok, so you are using the session as a trigger, add the following code at line 1 to force it to look for the session:
<?php @session_start(); ?>
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.