when a page displays blank, it means a php error is occurring.
to turn error reporting on add the following coed at line 1:
<?php
error_reporting(E_ALL);
ini_set('display_errors','on');
?>
As for setting up downloading of doc files, the best way to get this done is to use Digital File Pro or Universal Email 4 to set up an area where the client can upload files and then using the same extension set up a download for the files. If you need help with that, please post a new thread for it in the Universal Email forum.