We dont have a turkish translation at the moment.
http://visiolist.com/community/forums/language_packs/
If you're up for the challenge yourself, make a copy of languages/import/english.php
This copy name it turkish.php and place also into the same folder.
Then you can edit that new file. Once translated, visit site.com/admin/ and at the top menu hover over "Content" and visit "Language Manager", where you can import your newly translated file.
If you do that and want to share your translation afterwards with the community, it would be much appreciated
