Wallcraft,
the thread "Mobipocket default font" seems to give me the option to use "Liberation" font and maybe also any other (but the details are sketchy there, while liberation has a package.)
If this works it would be the ideal solution.
I will also try out FBReader, but then I would lose dictionaries and DRM support.
(Nekokami mentioned "remove DRM from books, but that is impossible as I know?)
Do any of you have experience from changing the fonts successfully with that pacage?
I am getting closer to the order-button...
Petter