permissions to 777 (it says 666 on the browser install page)
666 is correct not 777
languages (chmod 755) (a (is something missing here?)
No nothing is missing here
, you will need to set $usegd = 1 in config-inc.php for GD 1.x.x or set $usegd = 2 in config-inc.php (no longer in the config-inc.php) for GD 2.x.x, or
actually we should delete that part above.