Thanx for your help.
Talking about Unicode, ok, UTF-8 or whatever is a unicode, as Unicode big endian is unicode, too.
But I am talking about that Unicode (no extra letters or numbers in it's name)
This mode allows me to export and import my tasks into my schedule (EssentialPIM) with all the accents used in Portuguese, without signs, "?", "@" Instead.
Oh, BTW, I bought EssentialPIM just because Rainlendar probably have many extra programing lines that make it too slow to work all day waiting about 3 to 4 minutes after every "ok" I click on it...
...believe me, I used to suffer this "nightmare" since 2009, as far as I remember.
But I am NOT throwing Rainlendar away!
Now I have two task reminders to manage...
...'cause I really like Rainlendar.