Need to download Antivirus 2012

I have a five machine license for Antivirus 2012. I have used four of them (My desktop, my laptop, wife's desktop, wife's laptop). I just purchased a net book type of machine without a cd/dvd drive running Windows 7.

 

Is there any way to download Antivirus 2012 and activate it with my 5th license?

 

Thank you

Mike