Over the past 3-weeks I've tried four different similar-purposed mods and plugins. Easy Folder Listing is by far the best, for the following reasons:
1. It works with 1.5x and 1.6
2. It actually installs without any hassle
3. There are fare more features and means of customizing the display
4. The author has been immediately and helpful in getting this newb up to speed on myriad of my own challenges.
If the thought of individually typing and linking dozens -- if not hundreds -- of documents, this is the plugin you want and need.