Put in your Username--don't forget the "@mycrib.com" (substitute your own information, of course) and Password (if desired).
APOP is between you and your domain host. 8-)
The Bat! is one of the few email clients that will leave messages on a POP3 server; this is the place where you can make that selection. Next…
Your email will probably work with these settings, but let's go tune them up.