Hard Disc corrupted. Need to re -install Norton Security on a new drive

My hard disc has crashed and been reformatted with a re-installation of Windows 7. I was running Norton Internet Security on that and 2 other machines (used all my 3 licenses).

 

Can I still dowlonad a copy for my crashed machine (new hardware disc), even though I have acticated it on 3 machines. Can the online activation deteact the MAC address or serial number of my machine to confirm it was origionaly installed on it?

 

Any help would be appreciated.

 

Dave