You are very welcome. IT used to be my field, before I got sick. :))
Agree strongly with Cofty re the freeware. Linux can be a bit difficult for the average user (like me, hehe), do you agree, CAA? I would like to use it myself, and my techie friends both recommend, but admit that as an user-friendly OS, Linux still has a way to go.
Also, everything James Brown said. Be careful, though, when clicking on Google images - that's how my AVG got infected.
Here's a heads-up to you or anyone who gets a problem and needs help. There is a website, www.majorgeeks.com, that is just that. A site with MAJOR geeks, that helps people. They give clear instructions, and know their stuff as good as the best hacker. They cleared my system of a fierce malware that was embedded in my (licensed) AVG - which is rated as good as Kaspersky - last year. No anti-malware or firewall is completely safe.
I am not up on the latest odds and bits of IT technology (it moves so fast and has left me far behind), but can say with absolute certainty that the above site can be trusted. They also have lots of advice and forums re security issues and other problems. They, too, agree with Cofty re the freeware.
Oh, and on Facebook, subscribe to Facecrooks ... they give advice and tips on Facebook safety, and alert you to all the latest scams.
Happy surfing!
tal