Ok well it means that you have managed to download some type of spyware or malware, The best thing to do to start off with is look through your Add/Remove programs in the COntrol Pannel and remove anything that looks like it could have been installed with out your knowledge (This is usually search bars).
Once you have done this go to this link and follow its instuctions. I know it might not be the same spyware but it will remove it :)
http://forums.maddoktor2.com/index.php?showtop ic=8071