Spell checking software for MS Office 2007 (for Bulgarian language)

Look at this:

The message boxes are from a software that's supposed to be a spell-checker for Bulgarian.

Can this software fail at displaying Bulgarian characters?

The software is called Cyrilla Correct 2007 - it is intended for MS Office 2007 and this is a clean install of the trial version. This happens on first use.

A crap, I'm disappointed. And this is supposed to be the best thing on the market.

Does anybody know anything better? (Something that would work as seamlessly as Firefox's spell checker)