@Thomas Maass: I'm not quite sure what your asking. Conboy works directly on the Tomboy format (reading and writing) there is nothing else involved. All notes are stored in /home/user/.conboy. However Conboy shouldn't run while you change anything in that directory.
If you have further questions, please ask them in the forum using this thread: http://talk.maemo.org/showthread.php?p=833688

Excellent app. I've been using for several months now. I'm using the version that sync's with Ubuntu One & Tomboy on Ubuntu - seems perfect for me in both directions (Not sure if this is now fully available or still in 'testing' - anyway, it works for me), Thanks.