Proper way to hook spamassassin into sendmail

I've got spamassassin installed, and spamd running... but it doesn't do anything. My sendmail recieves mail, but does not use spamc as a filter. I found some general rules at: http://www.uk-dave.com/tutorials/linux/spamassassin.shtml But, the SuSE spamassassin/spamc doesn't hook in that way, I get /var/log/mail errors like: Sep 24 23:09:07 xserver sendmail[10106]: i8P597ct010106: Milter (spamassassin): error connecting to filter: Connection refused by /var/run/sendmail/spamass.sock Sep 24 23:09:07 xserver sendmail[10106]: i8P597ct010106: Milter (spamassassin): to error state This is true using spamassassin or spamc. What's the proper filter to hook into sendmail? Thanks, Chris