Neither Norton nor McAfee are very good in my opinion. I use Avast as my main antivirus, Avira Antivir as backup, A-Squared for spyware, and a decent firewall for added protection. Also, if you haven't already, change to Firefox or Opera, IE is not very safe. Stuff will always get in, it's the nature of the Internet, but this should help take care of most of it. Good luck.