There are many versions of Windows XP you can find out there *cough*download*cough* The corporate edition requires no activation no matter how many times you use your CD key. Also, you can't really screw up in social engineering a activation key. They'll just ask you to read them the number, and what you're using it for. Just tell them that it's for your computer that crashed last night because you had a particularly nasty virus, they know no different, and as stated my Microsoft policy, have to give you an activation key. Just sound convincing, and a little pissed. I have one version of Windows that I found that is called the "Performance Edition" and it works quite nicely. Some guy basically whittled and XP SP2 disk down to about 400 megs, tweaked a few annoying registry keys, and packaged it up and put it out on the internet. So in closing: Get XP corporate edition.