SpamAssasin help

[Howard]

I'm running Mailscanner 4.25-14, Spamassassin 2.61

I'm sort of a newbie. :(

I was wondering if someone could tell me step by step how I would add
bigevil.cf?

I've added it to my server but I'm not sure exactly what files I am to
modify. Do I just modify mailscanner.conf?

If so what lines??

I have this in my mailscanner.conf:
Spam List = ORDB-RBL

Do I add to that line? And then restart mailscanner and that's all?

Any detailed instructions would be awesome.

Thanks