Problem with Search Engine and its Results. Might be malicious affect or any other virs effect?

There is a problem when i search from yahoo or google any search item. If i would search for real player software (example) from google, then it shows every link related to Real Player from which if i choose any one link and click on it or open it in new window, it redirects to unknown or irrelavant page which is not at all the same as the url google shows in the search result at the bottom in green color. I think i have downloaded some virus. I tried every thing using many spyware and antivirus softwares like -

a) Superantispyware

b) Spybot S%26D

c) Spyware terminator

d) mcafee

and other small softwares but none shows any results.

Please help i think this might be from a family of adware files. If any one experienced and solved, please help.

Problem with Search Engine and its Results. Might be malicious affect or any other virs effect?mcaffee

I'm sure you're infected by something. But do like the following steps:

1.Can you use another browser like Firefox, and type what you want in the right-corner search box.

2.Download Avast! Antivirus from http://www.avast.com

3.Some viruses redirect your page to a specific page. Go to the file C:\Windows\system32\drivers\etc\hosts and open that file by Notepad. See if the virus redirects any webs to any specific pages.

4.Good luck.