Rosemary, Have a look @ this article (http://avgclick.me/SupportContacts).
AVG Guru
I just purchased the CD for AVG protection, two years, unlimited devices. It installed on my desktop, Win 7 Pro. However, when I try to add it to any other product, I get a red error message saying this product is already registered to another user. Yes, I know! It is registered to me!
Hello Rosemary. I suppose that you started from registration step on your second computer too. Please note that it is not required to register the product every time before you add it on to a new device. Please go ahead and proceed with the installation process of AVG Protection Pro. To install AVG Protection pro: http://avgclick.me/1JpamCM
Please feel free to contact us should you need any further assistance.
Rosemary, Have a look @ this article (http://avgclick.me/SupportContacts).
AVG Guru