Greek letters in text objects

[Joerg Betzin dza de]

Dear Dia users,

I am very new in working with Dia. I
try to write greek letters in a text object.
But there is no 'symbol font' available
in my font list (nevertheless, there are a lot
of other fonts, but also e.g. tci1 is
not available. But in Word this fonts are realy available).
Is there a possibility to load such
additional fonts or are there other ideas to include greek letters?

Thanks in advance

Jörg