which i seem to have got around by changing
setcookie("w3t_mysess","$newsessionid","","{$config['cookiepath']}");
to
setcookie("w3t_mysess","$newsessionid","0","{$config['cookiepath']}");
Whats going on guys, I assumed you tried to install the beta on a few setups before releasing it. There nothing odd about mine, Its a well speced running IIS5.