I've been looking for the answer to this one, sorry to bother you guys having the tough questions

Been using Live OneCare, having downloaded it from the web, yesterday bought the subscription and got it set up on my Vista laptop.
Problem: I want to put it on one of my (wirelessly networked) XP desktops, to see it will fix my problem on that one of having my browser(s) "hang" whenever I try to access the www. I can't use the www on that one to go to the website and download the app. I was figuring I could add the pc to my OneCare circle from the (hub) one where I purchased the product.
So how do I put Live OneCare on a second PC without using the web? THANKS. I really gotta get that PC fixed so I hope this will do it. I was looking for a setup file to copy over but am not seeing one.