Naming (copied) and installing additional dictionaries

Hi again!
(1) During Groupwise 2014 client setup installed dictionaries is in GUIi named correctly, I mean – English-U.S. standing for en_us etc. But when I add dictionary by just copying it to installed client (for instance files et_EE) then GW does show it as ET_EE. It's ok, because it (GW) probably does not know nothing about how to name it. But ... how can I "tell" GW client to name it as Estonian (or Eesti etc.)?
(2) Also, can I set additional dictionaries to install during default (unattended) setup? For instance this et_EE?
More thanks, Alar.