Language Files
All text can be found at one central place - the language files. For each language one file resides in the folder /language/. You can edit the files using a text editor. If you want to create a new language file, follow these steps:
Copy one of the existing language files and change the language abbreviation.
Open the new language file with a file editor and make your changes.
Open the file /configuration/default.inc.php and look for the option
$n2s['available_languages']
Add your language to the array, i.g.:
$n2s['available_languages'] = array(
'en' => 'English',
'de' => 'German',
'es' => 'Spanish',
);The new language should now appear in the admin area -> general settings.