I changed my virtual host in Apache, now I can't get to any other directory.

I'm going through some Zend tutorials and at one point, I changed my httpd-vhost.conf file in Apache to this:

<VirtualHost *:80>
     ServerName tutorial.localhost
     DocumentRoot C:\wamp\www\zend_tutorial\public
     SetEnv APPLICATION_ENV "development"
     <Directory C:\wamp\www\zend_tutorial\public>
         DirectoryIndex index.php
         AllowOverride All
         Order allow,deny
         Allow from all
     </Directory>
 </VirtualHost>

Now, I can't get out to any other directory, save my zend_tutorial without getting a page that a 404 error occurred. So, when I go out to localhost, I get my pretty little Zend page. But if I go out to localhost/SouthArea, I get a 404. In other words, every page is being processed according to my Zend directory and I don't want to do that.

I'm just following directions at this point without really understanding the ramifications of what I'm doing. What did I do when I changed my virtual host in my config file, how do I change it so I can access my other pages and how can I ensure that I access my Zend pages in the future? Do I have to change my virtual host?

Thanks!