AVG makes a GREAT FREE product. I find that Nortons is annoying as heck, and intrudes into every corner of every program, and just slow down the machine.

Many internet services provide a free suite of protection services with their internet. AOL does, and Verizon does, and so on. You can follow the link on the homepage of your provider to services offered.

Even though I have many chances through many programs to have their packages, I chose AVG. it does an awesome job, is not intrusive, and just does what you ask it to do. Free is also a great point.