Microsoft Security Essentials- http://www.microsoft.com/security_essentials/default.aspx More information from Microsoft Security- http://www.microsoft.com/security/default.aspx Malwarebytes from- http://www.malwarebytes.org/ instructions on use- http://www.udel.edu/topics/spyware/malwarebytes.html video on use of- http://www.youtube.com/watch?v=XvbkBonKOQU Superantispyware from- http://www.superantispyware.com/ instructions on use- http://superantispyware.com/support.html video uses of- http://www.youtube.com/results?search_query=instructions+on+use+of+superantispyware&search_type=&aq=f Use these three together to keep your computer safe and the best part they are free!