I am trying to move a WPMU install from our testing server to the live server. To minimize downtime, I placed the files in the same root directory as our current static website. I cannot get the WPMU version of the site to show on the front-end, but I can access the back-end for my 3 blogs. If I add index.php to my domain, it redirects back the the static site. If I try any url's of my pages or posts, I get a 404. My .htaccess file matches the default I'm supposed to use, and the one that works correctly in our test environment.