There is more chance of finding a good actor/ess in Coronation Street than a home computer being hacked. One firewall is more than enough. ALL a firewall does is mask your computers ports. There is still one open and if someone wanted to hack it they would know that the other 65000 ports were there. There are several programmes that will bypass any firewall and click here is an interesting read. There have been more releases during the last year.
Steve Gibson used to be a marketer and his rather garish website shows it... click here is another side of the coin. Always better to have more than one view ;-)))