downloading current subscription on to a new computer because my other died

I’m certainly not a techie and i need help
I am reinstalling everything on my new WINDOWS 7 computer because my other computer died and i cant figure out how to let the site know it’s me so i can just download the current subscription of the avast. heeeelp, please
THX
Jeff

What subscription for what product avast 5.0 free, avast 5.0 Pro, what ?