How to remove Security Tool from computer?

I accidently downloaded Security Tool on my PC and now it doesn’t show any of my files. All I’m able to do is go on the internet. I tried downloading a thing to remove it but Security Tool just blocks it. How do I get rid of this thing? It’s such a huge pain!

Malware doesn’t discriminate: Macs fall victim to virus – Quad Cities Onlines

Mac users recently suffered their first widespread malware attack, shattering the misperception that computer viruses were an exclusively PC problem. Malware no longer discriminates between Mac and PC users. Consequently, it’s time for Mac users to adopt …
Read more

What is the best way to maintain the security of your computer?

I have vista home premium on my hp laptop.
I wanted to know all i need to get to maintain my laptops security.
like what kind of unti virus, what kind of spy ware and other things.

How do I know if this security system will work w/ my computer?

I’m considering purchasing this http://www.amazon.com/4-Channel-Wireless-Security-Camera-outdoor/dp/B003OZ4UN6/ref=sr_1_3?ie=UTF8&s=electronics&qid=1279752676&sr=8-3-spell

I want to make sure I will be able to use this w/ my computer or tv. I have windows 7 and an up to date tv w/ dvr box. Can anyone help?