Session - Problem

HI, Im having problem with CGI::Session. I need to assign same session id to user who adds items to shopping cart.But it creates different ids everytime Im adding item.Im using IIS server, and I dont see any cookies or session data which should be stored on my computer.It only prints cookie in browser.I tried different methods nothing works.Here is script, as described in tutorial:use CGI; $cgi = new CGI; $session = new CGI::Session(undef, $cgi, {Directory=>'/tmp'}); $cookie = $cgi->cookie(CGISESSID => $session->id );print $cgi->header(-cookie=>$cookie);$sid=$session->id();Anybody can give any solution?