Ok, you are suspecting that your computer has been infected with spyware or adware. That's serious, they can be very harmful. The problems can range from your credit card information or password being stolen and abused to a partly or complete failure of your computer.
Strangely enough virus scanners do not see these as a threat enough to protect you against it. Thats why virus scanners do nothing against these malicious programs.
Spyware and Adware developers are smart, they design their software to be very resistant. They do this because they do not want you to remove their software. The spy/adware developers usually can make a lot of money by infecting many computers. So it is in their best interest that your computer gets infected with their software and stays infected.
They use many tricks to remain undetected on your computer, for example. If you look at your process list. you will not see a program running called "evilspyware.exe". But they cleverly rename their software to something that looks like a process from windows. Even worst, most programs bury themselves deep into your system. So if you do find out where it installed itself and you remove it. It will just reinstall itself the next time you start the computer.
So it is nearly impossible to remove spyware or adware manually, thats why these days you can download and install a new piece of software called a "spyware or adware remover". These programs can detect and properly remove any type of spyware from your computer within minutes.
Learn more about spyware or adware removers at : http://spyware.topguides.info
Source: www.articlealley.com