How to check score?

How do I change the action taken on a recipe based on its score?  I
would like some mail to be dropped and a response sent (since I am not
*sure* it was spam) and some mail just dropped (because I am sure).  

Can this be done?  Thanks,

-- 
Kenneth P. Turvey <kturvey(_at_)pug1(_dot_)SprocketShop(_dot_)com> 

If you pick up a starving dog and make him prosperous, he will not
bite you.  This is the principal difference between a man and a dog.
        -- Mark Twain