Ckfinder file manager

i hope mi thread is valid,
if ckfinder tells me the file manager is disabled by safety reasons, contact ur system administrator and check ckfinder config file ( well something like that because mi ckfinder is in spanish i hope the translate is correct) where can i change that option?
in my config.php
i have this options

$config['Thumbnails'] = Array(
'url' => $baseUrl . '_thumbs',
'directory' => $baseDir . '_thumbs',
'enabled' => true, <------------------- this is what im supose to enable right?
'directAccess' => false,
'maxWidth' => 100,
'maxHeight' => 100,
'bmpSupported' => false,
'quality' => 80);