Sessions just not working...

I cannot get session information to work under any circumstances.... I think I've read every single comment on http://www.php.net/manual/en/ref.session.php session_start(); Function setup() { global $HTTP_SESSION_VARS; if (!(isset($HTTP_SESSION_VARS["notesType"]))){ $HTTP_SESSION_VARS["notesType"]="DAILY"; } if (isset($HTTP_GET_VARS["notesTypeFilter"])){ $HTTP_SESSION_VARS["notesType"]=$HTTP_GET_VARS["notesTypeFilter"]; } } // End setup Function //Call the page with page.php?notesTypeFilter=ALL setup(); //$HTTP_SESSION_VARS["notesType"] returns all //Call the page with page.php //Read $HTTP_SESSION_VARS. It's empty. It should return ALL I do have register_global set. And I do have track_vars set. But even reading the comments on the above page, nothing will work. It will not persist with the session variable... Am I doing something wrong? Norman