Reinstalling Norton 360 after upgrade to Windows 7

I purchased the professional edition of Windows 7, Having to reinstall windows 7, brand new...  not upgraded from Vista home premium 64.    How do I go about getting Norton 360 back onto my pc?  I have remaining files that were installed into a folder labeled "windows.old"  There are files in there for Norton 360, I'm just not sure how to access them, and get the program up and running again.

 

Thanks in advance,

 

Brent