You are welcome ... I wish ALL fixes were as easy.
My "opinions" on anti-nastie's are quite strong, some may say overpowering, I may rabbit on and say the same thing over & over again, but I mean well.
Let me first say ... no amount of "protection" is 100% effective.
My first choice goes to Kaspersky, either their stand alone AntiVirus program (KAV) or their all-in-one, Kaspersky Internet security (KIS) ... both also help protect from Trojans, Worms as well as Mal ware & Spyware, not to mention Viruses. Not free but you can try both for 30days.
I also highly regard NOD32 on the same level, and will recommend it over KAV on a lesser spec PC as its footprint & speed is excellent. However, they don't yet have an all-in-one package. So you will need additional help. Not free but again has a 30 trial period.
AntiVir Personal is a Free AV program,
they have a paid-for version, but if you are a little tight fisted with money, then you can do worse with other freebies
It is worth installing the following programs also ...
SpyBotSearch&Destroy
It has some excellent features that help protect your system from Spyware/Mal ware
SpywareBlaster
It don't do much at all, what it does do is issue "kill-bits" to Internet Explorer & Firefox which kills any site on its list from being displayed ... no PC should go on the Internet without it.
Microsoft Windows Defender
No, really, it is a damn good first line of defense, not originally written by MS and in its day was the defacto anti-spyware program all pros used. Was not free
(quite dear to buy actually) so was not that well known by the ordinary PC user.
CrapCleaner
This is NOT an anti-nastie anything, but what it does do is help you easily remove un-needed crap off your PC
One important piece of "software" is your Firewall. Most people just use Microsoft's own ... it works, but has a lot of failings.
Most people who have Broadband have a NAT Router ... this has a built-in "Hardware" firewall ... the word Hardware is a bit of a misnomer, but suffice to say it is a damn good idea to have a NAT Router in your system.
I would still install a good software Firewall.
Top of my list is Kaspersky Internet Security ... KIS is nice and easy to use and a powerful tool in your PCs defense.
Kerio
This Firewall is a highly regarded firewall, not free but you can again try before you buy.
ZoneAlarm
Another highly regarded Firewall, has a Free version as well as a paid for. I'm afraid I don't like it, I will not use it.
Comodo
A new kid on the block fast becoming a standard is quickly taking the lead away from ZA ... is free for personal use. The makers of Comodo were once on the wrong side of the fence, they have "come clean" and have made inroads in shaking off the bad stigma they once had. Actually, it is a damn good program, and I can recommend giving it a try out.
Anyway, I've rattled off a few, there are more
Here you can look at ... try a few out yourself, do your own "evaluations" and see what you like, and, can understand. It is a good idea to get to know & understand the software on your PC.
TTFN