[Dovecot] How can i complie and install the dict modules

Hello,

I want to migrate from courier-imap to dovecot and now i am trying out dovecot1.1.alpha3 But i have problems getting the expire plugin to work. At startup i get the message: Unknown dict module: db As far as i understood i have to compile the backend manually an copy it into tho appropirate place. But how can i do this ?

Thanks in advance,

Oliver Eales