Safer-networking SpyBot Search & Destroy
Safer-networking produce a software product called Spybot. This is an anti-spyware program. It can be used to scan you computer and delete unwanted spyware and malware software. See here :
http://www.safer-networking.org/
As mentioned on the official website... "Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven't intentionally installed, if your browser crashes inexplicably, or if your home page has been "hijacked" (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don't see the symptoms, your computer may be infected, because more and more spyware is emerging."
Updates are produced every day or every few days, and can be downloaded from their website automatically or manually from this address :
http://www.spybotupdates.com/updates/files/spybotsd_includes.exe
The definition file update looks something like : "spybotsd_includes.exe".
It is recommended to run this program and fully scan your computer once a week or even once a month with the latest definition file downloaded.
Available Languages : Currently more than 50.
Operating systems supported : Most windows version including tablet PC editions, windows mobile and Vista. Linux/Unix and Symbian (See the official website for more details)
Cost : Free!