How to transfer Norton Products to a new computer

My older windows XP dell laptop stopped working. My Noton's subscriptions to Internet Security and Systems Works don't expire until April 2012. I followed Norton's guidlines to transfer these products to my new laptop (Windows 2007 system). Screen says downloads are not available.  Any suggestions? I was unable to locate any link that would allow me to talk with customer support.  Would my upgrade in operatinf systems (XP to Windows 2007) be causing a problem?  Thanks for any guidance.