Go to this link and you will be able to download and install all the security programs you need to scan and remove your problems if you have them.
And before the Applebores jump on here with the “Just buy a Mac crap”, remember these things do not jump out of thin air and infect your computer. You are letting them get on your computer with your computing habits. These include opening spam e-mails (even those from friends), going to websites that are flagged by your anti virus program as being dangerous, and the biggest one I still see is file sharing through Limewire, If you have this program uninstall it and use Torrents, but scan all downloaded files before running.
Never ever run two anti-virus programs on your computer. If you are running McAfee or Symantec, you are better off with Avira AntiVir Personal Edition (free) or AVG Free version.
http://www.techsupportalert.com/
