Update of NIS from 2010 to 2011

I was chatting with a Norton rep earlier this morning about renewing a subscription for NIS 2010 versus purchasing the 2011 version. In the end, the rep provided me with a link to download NIS 2011.  I was not charged for this.  Also, I had 21 days remaining on the subscription with the 2010 version.  After installing the 2011 version, running LiveUdate, etc., I decided to renew the subscription for another year.  When I click on the Renew link, a window opens asking me for a product key.  I don't have such a key. Searching on Norton for where to find the key revealed that if I downloaded NIS 2011 from Norton's website, I would receive an email from Norton which would contain, among other things, the product key.  No email has been received.  Without the product key, it would seem that I can't renew the subscription.  Any thoughts and info would be appreciated. Thank you.