Well, if you read the previous discussion it seemed pretty apparent that the OP was unaware that XP added some teeth to the EULA's one copy per computer provision, thinking that s/he could buy a single copy and load it onto more than one computer, which is why I suggested it be locked, and I believe it was Mark, agreed. The one copy is probably a bit suspect too, but that's another topic. Even if it were a volume license copy, those don't allow you to just install a copy of Windows on all your friends' computers, and I highly doubt the OP spent probably tens of thousands of dollars NZ to buy that volume license. So, there's definitely something rotten in the state of denmark on this one no matter which way you look at it.
In any case however, all roads here lead to Microsoft. None of us can influence the activation system. So, if the OP is sure that s/he is in the right on this one, s/he can call Microsoft NZ's activation line, explain the situation to some agent, and they will rectify the issue in a couple of minutes. I suspect there's a reluctance to do that, however, because the OP is not so confident that they are on the legal up and up here. If I were to speculate, I would say that s/he figured they could craft this sob story to elicit sympathy from people. Ignorantly believing that most of us haven't heard it a dozen times before, and told far more convincingly. The whole little guy being steamrolled by the big bad multinational conglomerate sob story which works a whole lot better if you're an attractive woman that can cry on command. It tends to fall pretty flat in a written format. My guess is that the OP was hoping someone would point him/her to some illegal crack that disables activation, and of course opening the system up to a whole host of other issues.
The other possibility is that they were legitimately ignorant to the fact, no matter how hard it may be to believe about 10 years on since XP was introduced into the market, that the activation system introduced with XP, tends to add teeth to the EULA.
And the story is a bit inconsistent too... First the OP is building a computer system for an old lady, which is probably where the whole selling thing got started. Not much of a leap to assume that the OP is a small time system builder. Then in this thread it changes to "a friend". You'd think the fact that the original story was still present for all to see would be enough for someone to keep their story straight, but there's no shortage of stupid criminal stories for radio talk shows to use as fodder, thinking it should be any different here is probably equally folly.
There's just too many aspects of this story which don't add up, and frankly none of that really matters. If it happens I am completely wrong about everything in my little speculative narration, it doesn't change the fact that Microsoft is the only one that can resolve the issue legally. So frankly, this discussion topic should share the fate of it's sibling before it, and any future progeny of the OP on this topic until such time that s/he can explain the situation in such a way that there's not even a question of illegality to the satisfaction of a moderator. Because right now, there's a definite euro stench emanating from this topic, and it's not all those people sick from the e.coli outbreak.