Admin Forum:How to make a wikia for registered users only

Hi everyone, I'm the head admin of Playstation All-Stars Wiki. I was wondering how I could make it so that only registered users can comment, similar to the Disney Wiki. This wiki requires users to create accounts in order to comment, edit and pretty much do anything. I would really like to know how they did this. This feature would be helpful because of all the anons that spam up my wiki.

--Sackchief 15:29, June 27, 2012 (UTC)
 * You should hold a community discussion in a forum or blog post about the change; if approved, contact Wikia staff here, explaining the need for it and linking to the vote. 16:50, June 27, 2012 (UTC)