Now I'm not advocating this, even if it is does work
But as I understand it [please put me right if/or where I may be wrong]but on installation of XP your given 30 days to validate the OS. And I take it if you don't validate it by day 30, it will cease to function.
Now assuming you have gone down the validation route, I understand that on doing this MS takes a electronic snapshot of you set up. And if for some reason you do a clean reinstall it has to be validated again, and it checks you are infact reinstalling it on the original machine.
Now if so far, I'm right in my assumptions, I'm I right in again assuming that you then tried to instal onto an obviously different machine set up, it would fail validation. [different HHD, Mobo, Memory, Graphic card and the like]
Now I'm I right in thinking once validation has taken place thats it? Or does MS validate the machine at every security update. Because I just wondered what if you were to take an "Image" of the C: Drive of a validated machine. Then did a recovery reinstall onto another hardrive, which you then popped into your spare PC .... anubody tried it?...obviously just as an excersize.