I'm working on a new feature (in Asc) allowing to choose a different Gui language than Antivir setup to create !
Exemple: Asc Gui in Turkish, and you choose Avira setup langage of your choice to build with Asc: English, french, german, spanish, italian, russian, japanese, ptbr...
Asc works only with official Antivir Personal setup and integrate latest update viral def files into the official setup.
So i'm sorry, but we can't translate Antivir ourself to another langage: only Avira can make a new Antivir setup langage !
(if Antivir is not available in turkish now, you can't translate Antivir in turkish yourself)
But as i said before with the next build of Asc (i'm still working on it: it's a major change in Asc sourcecode) you'll get Asc in turkish, and you will get the possibility to create an Antivir setup in English, German (or any other official Antivir langage).