How do i kow which files are spyware?

You can not identify spywares until they are installed. Install an anti spyware and scan the PC. I can give a few links that offer free spyware removers...! . Ad-aware, Ewido are free spyware removers. You can download free softwares at a href="http://fixit.in/spywareremover.html" rel="nofollow"http://fixit.in/spywareremover.html/a