Originally Posted by DaleDe
It certainly has. Book Designer can read and convert PRC files so long as they are the original version. Mobi has a new compression method and files in that format has not been decoded but the original is well known. I put a link the wiki to a description. The original Mobi format is PalmDoc with some html constructs added.
Thanks, that's good to hear. I was investigating the feasibility of writing an open source converter and having to reverse engineer another binary format would make it beyond my levels of ambition.