How can I enable directory listings?

This is very simple to do. The first thing you need to do is figure out which directory you want to have a directory lising for, then when that is dont, place a file named ".htaccess" and add this line to it:

Options ExecCGI Indexes Includes FollowSymLinks

The folder will now display a directory if no index file is found.

If you would like ALL of your directories to show directory listings, then just add the same file as above to your "/html/" folder, and every folder will display one.