[Exim] Spamassassin

I am trying to set up spamassassin to work with Exim, and the suggestions on
this user group seem to differ in their implementation.

One suggests setting up a perl script to run within an exim transport, and
the other suggests starting up the spamd daemon.

I am interested in any comments or suggestions out there to keep me from
having to "reinvent" this procedure.

Thanks in advance for all of your words of wisdom!

Terry Shows