Error 404? Please HELP

[Sember]

Forbidden
You don't have permission to access /forum/index.php on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/1.3.39 Server at hxxp:semberija.ba [nonactive] Port 80

[SleePy]

Ask your host about this. This means apache is denying access to those files/folders. This isn't related to SMF at all