Well spyware is software that collects information about your behaviour on the internet and some other things. That information will be send to a server. You can use a program called Ad-aware
to remove the spyware on your system. And if you want a good version of kazaa without banners and spyware, get kazaa lite
topic moved to general
Never argue with fools... They will only drag you down to their level, and beat you with experience...