Do I Have A Good Computer Security Combination?

I have all the ones you have also, and yes they all have the free versions I've used for years. I also use AVG anti virus software, You can get a copy at download.com. Avast and grisoft pick up worms and viruses, sometimes one finds one quicker than the other. Zone labs is an awesome firewall. You are a smart person. I'm not sure of the CCleaner, what's that for?