Transitioning from version 1 to version 2

I'm wrestling with transitioning from a 1.0.15 system to a 2.2.25 system. The old dovecot.conf cannot be dropped into position on the new system because so many config options and symbols have changed. It seems every time I change something to match the new formats, I break something else! Anyone out there have maybe half an hour to spare to look at my old and new files to help me whip them into shape?