thanks for replies, just for info, im using "J-Build-R10-C4".
im continuosly searching for every config file, about switching language, but nothing.
BTW every Html inside the package was in Russian, and nothing showed in the Npc's dialogues, once replaced with english ones, everything's got ok. except that damned messages.
Considering that im not pro in this field, im planning to change source to avoid this "situation". L2jLisvus would be the better choice.
Thanks thousand everyone gived me explanation, and for your time.
Regards,
Fabio.