I'm probably just missing an obvious page or file. My current understanding is:
1) edit **/etc/IPdetect/IPdetect.conf**, in my case using the 'last' and 'browser' settings.
2) get the code or URL from your dynamic dns service that signals them that your ip address has changed
3) edit **/etc/IPdetect/change_run.sh** and add the service's script or URL to update your entries
In my case,
