Down Loading Norton Antivirus on New Computer

I Have a subscription which was renewed in Dec2010. I have product key. In need of directions on how to down load Norton Antivirus on to my new computer. Can't seem to get answer from on line support.  Fleminglsr

I Have a subscription which was renewed in Dec2010. I have product key. In need of directions on how to down load Norton Antivirus on to my new computer. Can't seem to get answer from on line support.  Fleminglsr