I have a serious internet problem concerning a search result. Virus?

Question

Ok I clicked on this ad accidently and it kinda freaked my computer out. I managed to cancel it before anything serious started popping out. Anyways , Probably it was that same day or a few days later but then As I did a yahoo search for a website I needed to go to, It redirects me to another site. Usually a search engine site. I press back and reclick it again and I end up with the same thing. After a few attempts, I finnally get to my desired website.
I have used a virus scanner to scan if it was a virus that does this kind of action when I click a site in which I used the search engine, and I used a Spyware Scanner (spybot)
If anyone knows or has experienced this problem please answer me of this horrible annoying problem =) thanks

Answer 1

Your PC is infected with a browser hijacker. Use these scans to remove it.
Both free.

Spybot - Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven't intentionally installed, if your browser crashes inexplicably, or if your home page has been "hijacked" (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don't see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S&D is free, so there's no harm giving it a try to see if something has invaded your computer.
http://www.spybot.info/

http://superantispyware.com/
SUPERAntiSpyware is the most thorough scanner on the market. Our Multi-Dimensional Scanning and Process Interrogation Technology will detect spyware that other products miss! SUPERAntiSpyware will remove ALL the Spyware, NOT just the easy ones!
Easily remove over 100,000 pests such as SmitFraud, Vundo, WinFixer, SpyAxe, SpyFalcon, WinAntiVirus, AntiVermins and thousands more!

Answer 2

Click the link below & do a online scan - this program is free & will clean your computer - you state that you cancel the program but it still has got on to your computer - if your running a good firewall (like Zonealarm then tell it to block this program).

Spybot will not remove all spy programs, it is some what limited in what it will remove - this is the reason why people run more than one spyware program.

I use the following:

Ad-Aware SE PRO, Norton spyware scan & one a week I click & run the link below.

Answer 3

1) run the following two menus of ccleaner
cleaner > Analyze > Run Cleaner
Issues > Scan For Issues > Fix Selected Issues

http://bestofrest.blogspot.com/2006/11/ccleaner.html

2) Download , install, update and run all of the below

spybot s&d
http://www.safer-networking.org/
avg free antispyware
http://free.grisoft.com/
adaware se free Antispyware
http://www.lavasoftusa.com/software/adaware/
http://www.download.com/Ad-Aware-SE-Personal-Edition/3000-8022_4-10045910.html?part=dl-ad-aware&subj=dl&tag=top5