Free and Paid Versions

Carol, Yes… Have a look @ this AVG article (http://avgclick.me/UninstallAVGAV).
AVG Guru

Should I uninstall the free version before installing paid version?

Carol,
Thank you for reaching out to us with your concerns. Please make sure that you have installed the AVG Zen interface and then kindly follow this article : http://avgclick.me/ActivateZen to activate your paid version of AVG.  Please feel free to get back to us for any issues with AVG. Thank you!

Carol, Yes… Have a look @ this AVG article (http://avgclick.me/UninstallAVGAV).
AVG Guru