Our network guy changed the access address of our Omeka server from "web.url.org" to "www.url.org" (or just plain url.org).
Omeka works fine on the server itself, but elsewhere the installation is still looking for "web" on files such as css.
Where do I change the base url to fix these issues?
Hmm, have you cleared your web browser's cache and then tried to access your site again?
Since all of the files are relative to one another and have remained in the same directory, they all should be accessible. If you can get to the /admin side, you should be able to get to the public side.