LaTeX (texlive) has language support for Dutch (and other languages) which I assume includes hyphenation rules. Maybe those can be converted/imported somehow.
I'm not sure but I think I read somewhere that fbreader180 actually prevents hyphenation for some words? Guess it depends on the language and person (and font size?) whether hyphenation is any good. Personally I don't like it when a lot of words are broken up.