[garygibsonsf]

Well, I did try ... I bought a mobiformat encrypted ebook: downloaded it to my girlfriend's laptop (running XP), after registering the PID from a copy of mobipocket reader I downloaded to it; the book opened fine in mobipocket reader on the windows machine; emailed the same file to my ibook; ran pdurrant's script on it (or rather, three versions of it, each one containing a different version of mobidedrm.py); and no luck still.

Then I took jswolf's suggestion; opened terminal; put the prc ebook I bought into the same folders as each of the altered mobipocket unlocker scripts; ran the python script on it as he typed it; except that this time, it said something like 'invalid PID checksum'.

I did, by the way, notice a second file accompanying the purchased ebook, with the same name but the extension '.mbp'. I get the impression, however, this jsut tells the mobipocket software how to display the cover of the book.

Butg no luck yet so far I'm afraid, sigh ...