But that wasn't good enough for Microsoft. Microsoft informed me in their emailed order acknowledgment that I was some kind of felon: "To convert your counterfeit Windows XP software to a genuine copy of Windows XP using the new Product Key, you will need to download and run the Windows Product Key Update Tool on the same computer you used to purchase the electronic license for Windows XP."
The following week I received in the mail a Windows Genuine Advantage Kit for Windows XP Professional; it contained a letter asserting that I had "submitted a counterfeit report" with my order, and that this report would be "treated as confidential." Moreover, "...Microsoft's anti-piracy team investigates each and every lead we receive. Since investigations are ongoing and extremely confidential, we are unable to provide you with the status of the particular lead you have submitted. The length of time to bring about enforcements varies depending on the nature of a particular investigation."
Hateful monsters! Frightful miscreants! I suppose I deserve this for having anything to do with Windows.