Nothing one can do; the special Polish characters, what I'd call the Umlaute A, O, U are shown in capitals. Tried other fonts, etc.
That's not entirely true. While the "O" with a dash on top is a capital version of the same polish letter, the "A" with an upper dash shown in the picture is not a polish letter. The same goes for several other symbols which don't corellate with polish characters.
Can you please paste the text of that name in this thread so I can play with it? I'm using standard windows fonts so it should just work.
Here's the name in case You need it anyway:
Here are the other polish specific characters:
Here are the capital versions: