It was a very short game--just making sure it worked (we are both working so couldn't finish).
But we're still #1! All others are #2.
You get your key in the mail after your billing goes through. You log into steam and activate the game with the key. It downloads through steam. You click to play and steam does a 2-step driver update (Zombie had to re-start steam becasue his failed at this point the first time). Then you are in.