[Dovecot] alternate ports?

I'm trying to set up 1.0 beta 2 on one of our systems, and would like to run it on alternate ports from the standard IMAP and IMAP/SSL ports so that we can test it out a couple users at a time. How does one tell dovecot to listen on alternate ports? I can't find anything in the example config file...

Thanks,

Gregory

-- Gregory K. Ruiz-Ade Sr. Systems Administrator Computer Science and Engineering University of California, San Diego Office: EBU3b 1216 Phone: (858) 822-2625 E-mail: gkra@ucsd.edu