Everything was working great now all i get is 403 errors
 

Not Found

The requested URL /forum/index.php was not found on this server.
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Apache/1.3.33 Server at www.allmotorcycleforum.com Port 80

is the error I have been resigin can't get the admincp to work either.