Well, once again a lot of searching helped
I found a bunch of pythons scripts aswell as a bundle of them compiled to EXE files. For those who still need to get those, demonoid and btjinkie might provide help to find
Mobipocket Conversion programs + DRM Removal
About the file ebook demo file of "Arzneimittel Pocket" I mentioned in my previous post:
Actually it was not DRM protected.
Stanza and eReader refuse to display this file on my iPhone (3G, FW v.2.2). Another alternative called "textReader" (Cydia) won't display the file, stating it is DRM proteced (which it is not).
Now I got it running in Bookshelf. But to be honest I am not really happy how the file gets displayed. "Arzneimittel Pocket" ist a kind of encyclopedia for medical drugs and I could find a search feature in bookshelf.
Also internal Links don't seem to work. Well, sometimes they do, but most of the time they don't. Even a link that once worked, doens't always do the tricks. I asume this is a problem with Bookshelf?
So, what alternatives do I have left?
Converting the file to HTML? I have tried so with mobi2html. I can get all of the included GIF files extracted but the output HTML file seems to be empty (with 1kB file size only).
I feel kind of stuck here. HELP PLZ! If I will make any progress I will share it with you...
Greetz