Norton activation/update to private network

Norton Security | Norton Internet Security
1

I have a home wireless network with no internet access that consists of two desktops and one laptop.  My laptop is my access to the internet, and only when I'm not at home.  I own Norton 360 version 5 with a 3 computer license.  Can I activate and update Norton on the other computers using what I download on my laptop?

 

(For economic reasons, I can't afford internet at home and the desktops are too large to carry to the local coffeeshop).

2

I have a home wireless network with no internet access that consists of two desktops and one laptop.  My laptop is my access to the internet, and only when I'm not at home.  I own Norton 360 version 5 with a 3 computer license.  Can I activate and update Norton on the other computers using what I download on my laptop?

 

(For economic reasons, I can't afford internet at home and the desktops are too large to carry to the local coffeeshop).