@tomsem, @Blog Kindle Thank you!
It looks that Kindle3 has perfect support for Romanian language: file system, book, and web browser support.
I have used "Mobipocket Creator" v4.2 to make those prc files, maybe it's not the best option, but it was the first I could think of (since I use Mobireader on my Windows Mobile phone).
In the constant fight between Kindle vs Nook, Kindle wins when it comes to Romanian language support

, it works out of the box, no need to hack it anymore. Nook has the implicit Android bugs (Droid font
cannot display one character), and it uses
Amasis font, which lacks three out of five characters.
I do not have any more reasons not to buy a Kindle3 now!