I have created a small PHP script to translate the language files
Installation Instructions
Copy the PHP script to the /opt/zimbra/httpd/htdocs directory
If you don’t have any old localized language files then you have to create some empty files in the
/opt/zimbra/tomcat/webapps/zimbra/WEB-INF/classes/msgs/ directory
Then point your webbrowser to
http://SERVER:7780/translate.php
The rest should be selfexplaining (i hope

)
Rico Bach