by Rick Jerz.
Jay, in addition to what Guillermo has said, you might want to create an ".htaccess" file (a simple text file, but the period must be in the file name) in your root directory, and put the following command in it:
Options -Indexes
This command, I think, will then not show directory listings.
(Guillermo, did I get that right?)
Make sure to follow Guillermo's advice to create a simple index.html file in the root so that when you go to the domain, you see something. You can even create this simple webpage using MS Word, but save the file as an html filetype, and name it "index".