Well there is tonsYou are infected with spyware if:
* You see too much pop-up advertisements.
* Your browser has toolbars that you haven't installed.
* Your homepage has changed (and you can't change it back).
* Other settings have changed without your permission.
* Your computer is slow.
To get rid of spyware and keep your computer clean you can use an antispyware or even more.
You can download a antispyware software. There are 10 good anti-spywares.
here is the reviews:http://toptenantispyware.com/
If your looking for free virus protectors go here
http://www.techsupportalert.com/best-free-anti-virus-software.htm
You can download one and scan your system.
All are safe and can be trusted.
OR there is tons of other programs.... Like AVG Free
(Google)
Also heres CC Cleaner This works well
http://www.ccleaner.com/