Problem with Norton 360 activation after re-installing the windows

I am using Norton 360 with one year subscription which was bought about 6-7 months ago.  There was some serious problem with my OS so I formatted my system and installed XP again. It means my Norton 360  also got formatted. But now I am unable to download and install Norton 360 again. When I go to Norton site and try to download Norton 360 its always give option only to buy it but I already have 5 months subscription left with me.

 

Now I have downloaded Norton 360 from torrent site and when I tried to install it and activate with the activation key which I have bought,  there is no such option there and it says I have 60 days left with trial version.

 

Can some one help me that how can I download the Norton 360 and activate with my old product key which is still valid for next 5-6 months. I find no such option or direct help on Norton website.

Thank you.