K9 is an anti-spam program that analyzes the content of e-mail using a statistical algorithm of the Bayesian type. It sits between your e-mail client and your server, which is also where Nod32 for Pop3 sits. To get them to work in series, I left K9 in its default configuration, with port 9999. Then I changed Nod32 Pop to listen on 999 and redirect to 127.0.0.1:9999. Then I changed my e-mail accounts to use 999 for pop. The port numbers are arbitrary, but they must be consistent. K9 is available free at http://keir.net/k9.html This does not apply to the beta.