If you have the free version of AVG anti virus program you should receive a pop up warning stating that you need to up-grade before December 1st. If you click the "Up-Grade Now" you will be sent to a page wanting you to download the pay version. If you still want to keep using the free version scroll to the bottom of the page and in very fine print there is a link to the free version. You may also click the below link. It will take you to the download. Upon installation becareful to read and check or un-check the files to install.
http://free.avg.com/us-en/download-avg-anti-virus-free-edition