This might be a really simple question, but I haven't been able to figure it out. I have WP installed in a directory /testing. And I have a page called "tester", making the url site/testing/tester. I would like to change the url from site/testing/tester to site/tester without moving the whole WP install to root. I tried to do a mod-rewrite with apache but that just ends up in a "Page not found" error in WP. Any help would be greatly appreciated.