[Mediawiki-l] Can't see mediawiki site; see folder content listing instead.

[Joseph Brick]

Trying to set up a local mediawiki server on my Mac (osx 10.4.4).
Installed mediawiki version 1.6.2  to
Library/WebServer/Documents/mediawiki/

Trying to follow this portion of the install instructions with no luck:

"Hop into your browser and surf into the wiki directory.
It'll direct you into the config script."

So I go to http://127.0.0.1/mediawiki/ in my browser, but rather than
being presented with a web page (which I assume would guide me through
setup), I simply see the file listing of that folder. E.g:

AdminSettings.sample
COPYING
FAQ

etc.

Web sharing is on - for example, if I go to http://127.0.0.1/ I see my
Apache server's default web page.

Any ideas?