Spyware detection and Removal programs?

I got a pop-up on my "new" laptop this morning and it was from a program called Relevant.knowledge, I googled it and found that it is a somewhat harmless spyware program. I have no clue how it got on my PC but I don't want this PC crashing, especially since I fixed myself. It was my sister's old laptop. It took me 16 hours total to fix the entire computer and to get it up and running and I was proud of this accomplishment lol, not that it's totally impressive but I was proud anyway. So anyway, I downloaded SPYHUNTER 3 and it detected 764 spyware parasites, great. So I clicked remove and it's giving me all this BS that I need to register & billing or something when it said the software was free. I read up on this software and apparently it's a bad program and I guess, I'll remove it after.

Finally, I get to the question: What is a good FREE Spyware removal program? One that you used or have heard good things about.

Any help is appreciated, thanks in advance! :)

What is your anti-virus program? Does it update itself? Does it have a spyware component? Most programs do.

Here's a few good spyware ones that are popular.

Stay to the left on the page here, and make sure you download only the FREE one, NOT the "free trial".
http://www.lavasoft.com/single/trialpay.php


http://download.cnet.com/Spybot-Sear...-10122137.html

This is AVG 9.0. It does viruses and spyware.
http://download.cnet.com/AVG-Anti-Vi...-10320142.html

I use the AVG free one and spybot. Both are good and free. My computer boffin sons recommended them to me:D

I have McAfee SecurityCenter, I wasn't sure if it would do the job alone. I want double protection for this computer LOL until I get a new one next year for college. It's updated to it's latest version. It's the AOL special edition, I don't know if that its relavant or not. Thanks for the help & suggestions guys! I appreciate it. If McAfee doesn't find anything I will certainly look into the programs posted :D THanks again guys :)

I would uninstall McAfee and install either AVG or Avast for antivirus. Get Spybot Search and Destroy, its free and easy to use.