The following products on this page will provide good basic security for the average home computer. Just click on the graphics to go to the download page for the software you  are interested in. Be sure to make sure you secure your computer before surfing in net, it will save you much time and grief later.   AVG provides a good free anti-virus program. Click on the above image to go to their site.   Zone Alarm provides a good basic firewall. You can upgrade to the paid for wider protection.   This is a good, free anti spyware program for your computer.