Protecting a file via PHP.

I just read this: http://zend.com/zend/trick/tricks-august-2001.php To protect a file via PHP. What does this part mean in the serving the files part: define('FILEDIR', '/mnt/dos/'); Do I define the directory where the file is served from? Or do I define a directory to which the file is served to (a temp) or what? No matter what I've tried I get no error message and the browser (IE6) just hangs so it appears that PHP is trying to serve the file but failing for some reason. What is that directory I am supposed to define? What am I doing wrong? Steve Jackson Web Development and Marketing Manager Viola Systems Ltd. http://www.violasystems.com stephen.jackson@violasystems.com Mobile +358 50 343 5159