how do i install Zend Framework? I am testing locally and I extracted the Zend files into my Sites folder on my mac but when I go to one of the Zend demos, I get the following error:


Warning: require_once(Zend/Loader.php) [function.require-once]: failed to open stream: No such file or directory in /Users/john/Sites/demos/Zend/Gdata/Calendar.php on line 51

Fatal error: require_once() [function.require]: Failed opening required 'Zend/Loader.php' (include_path='.:') in /Users/john/Sites/demos/Zend/Gdata/Calendar.php on line 51

Please can someone help?!