tokan

Having used both Firefox and Chrome for a while now I have to give the edge to Chrome just because I've found that it just seems the snappier program of the two. The program loads much faster and it's search efficiency seems to be just a tad bit better. Also I've had some stability issues with Firefox whereas chrome has been pretty much rock solid.

Too be honest I wouldn't put too much trust in free anti-virus. I've seen it too many times where a user has had a free anti-virus installed and a virus or malware has managed to sneak on without too much trouble. If you do have to go the free route microsoft security essentials, as someone already mentioned, is probably one of the best ones out there. If you decide to pay for one ESET Nod 32 is an excellent program. Also, free tools like malwarebytes antimalware are excellent at rooting out that stuff. Also, steer clear of Google images I've seen a lot of people pick up stuff there.