Kmail and spamassassin

Hi list, maybe it is the wrong place to ask. If it is so, I am sorry. My problem is: I use kmail (with pop3) and installed spamassassin and procmail to minor spam in my linux-system. The installation was ok, but is there a chance, that kmail and spamassassin works together (only with the pop3, not with sendmail)? At this moment it seems, that kmail fetch the mails directly from the pop3-Server and I found no file at spamassassin to put the pop3-address in. If it would be so, kmail could fetch the mails throug 'localhost' from spamassassin (I thought, but I don't know how?). regards, Chris