Installing AVG on another computer

Michael, Have a look @ this article (http://avgclick.me/BlankEmail).
AVG Guru

I purchased AVG for my computer, and it says to click on the + key to add to another computer. That was fine, but when they send the email invatation, there is nothing in the body of the email. How can this be corrected, and how do I install on another computer (my wifes).  Thank you in advance

Michael

Michael, Have a look @ this article (http://avgclick.me/BlankEmail).
AVG Guru