New installation bonked

I installed version 1.3 and everything looks fine on admin but on the "public" site, the url for items, collections, and exhibits is bonked. Any clues? I get this error:

The requested URL /omeka/items was not found on this server.

Apache/2.0.63 (Unix) PHP/5.2.11 DAV/2 Server at localhost Port 8888

Make sure that all of Omeka's files were uploaded correctly.

In particular, this sounds like you're missing the .htaccess file that should be in the root omeka directory.