Must… Destroy… Spam…

I’m trying to use this codeword solution to stop spam, but I can’t figure out how to use it. I try to open the main tar.tar, and WinZip errors saying it can’t read the header. I really need some help here before my site becomes nothing but spam.
Once the influx of spam is ended, then come the great clean up…
UPDATE: Turning .tar.tar to .tar.gz allowed me to open it. I’ll try installing it tomorrow.