Well id say that you use Avast.
First of its free and you get a trail at first for 60 days after those days are out you need to register. Dont remember all the stuff you need to whrite to register but its mainly your name and a email adress and after you have done that you will get a mail after a few mins with a cd key thad you just need to enter and you are good to go for another year! When that year is out all you have to do is register again to get a new key. And btw its the Avast Home you want to use becouse thats the only one thats free. And just a side note im using Avast and i hardly get any viruses.
"Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity." Albert Einstein