Have you tried a forum search? It has to do with .htaccess mostly...but do a forum search, I'm *sure* this has been addressed a bunch of times already.

Try this forum search: http://www.google.com/custom?domains=fo ... %3A1&hl=en

Good Luck and let us know how it goes and be sure to post a link to your site so we all can check it out when you get done! :D