I know there is spywares in my CPU but cant find them..

[thenlguru]

I know i have spywares running in my computer, because of slowness of cpu. And also that in 5months it hasent told about any virus/spyware.

I am have running: Zone Alarm, Ad-Aware SE and F-secure antivirus, and all information should be updated. What else should I do to find the viruses and spywares?

Im very bad with computers so some basic advices are welcome.