I know nothing about what text(s) the Orthodox church is using, but at

http://kainh.homestead.com/English.html

you can find "A complete electronic edition of the Original Patriarchal text of the Greek New Testament, for WINDOWS, as it is used by the Greek Orhodox Church".
I have created a BW database. It seems to be a Textus Receptus type of text, but it does not agree completely with any of the texts already in BW. Perhaps some knowledgable person can tell us more about this text?