I am running Windows XP profesional, which I installed and activated. Everything was going OK until when I booted up today, a message came up saying that my computer's been through drastic configuration changes since initial activation, so I have to reactivate my Windows. I'm not arguing about the said "drastic configuration changes", since I have put in some extra hardware since (extra HD, new DVD burner, etc). The daunting thing is, I have only three days to get it sorted, after which I assume my Windows will be deactivated. So when I went through the re-activation process, I came to a screen saying that the number of activations on this key number has exceeded the limit. I now need to somehow get another actication key number in order to get things back on track. I've only done one activation using this key number, so I don't know why this activation process thinks I've exceeded the limit. Any ideas what I need to do to fix this? Does it cost any extra to get a new key number? Thanks.