What does this virus error message mean?

I was on the computer for a while and then my internet said this:

''Your browser was hijacked! Some results was changed by porn advertising! You need to clean your system immediately to prevent it. Download the newest antispyware software!'''

For one, this has never happened and I don't look at porn so this is creepy.

I have Norton Protection Center and Spybot Search and Destroy running. Norton hasn't come up with anything but Spybot has come up with something that says my Windows Security Center was disabled...

I'm really confused..? Can anyone make sense of what I'm saying and help me out??

That happened to me once. Thre was like signs of porn on the computer but neither me or my mom look at porn.
And she later found out that people can SOMEHOW (like computer geeks I guess) hack into YOUR file and use YOUR iternet and look at that kind of stuff and it somehow traces back to you. I don't know how that works. Maybe you should tell your mom and/or dad.

I figured it out. It was actually somewhat easy after I knew what to do. I just had to go to 'Run' then type in Regedit, then type in the name of the virus or whatever it was. It found it there so I deleted it, then delete temporary files, reset Internet Advanced options, then restart.

Well thanks randyo. I talked to my parents and told em I figured it out so it's all good now.

=]

shud be simple my friend worked for me ... Start>>control panel>>Internet options>>advanced>>reset (close all programs) hope it helps because after hours of trying to download software nothing was working try this first