I've gone thru the installation of easyphpcalendar on my windows xp machine (localhost). Now when I try and got to the index.php page, I keep getting the zend engine optimzer must be installed. I have already installed the engine (3.2.8). When I do my phpinfo, I don't see anywhere that the zend optimizer has been installed. What should I be looking for? Thanks for any help that you can provide.