Plus, mannyo, did you mean you installed your OEM on a PC, then installed the same OEM using the same OEM key on another PC and still able to use the online activation? No a different copy, I am slowly upgrading the 3 desktops in use at home. Ah, I understand now. However, I need to reinstall Vista OEM on my laptop (a fresh install) because it buggered out. It was activated before. So my question is if I re-install Vista OEM from scratch again, am I able to re-activiate online, or do I have to call? And of course, my original question was (so I don't have to keep calling when I have to reinstall from scratch) how can I back up the "activated" status of Vista so after a fresh reinstall, I can restore it without needing to jump through Microsoft's hopps?