My Vista SP1 snafu

I upgraded to Windows Vista SP1. After the install it wanted me to activate Windows. It then told me that my license key was already in use. I had three days to buy a new license. Tick tick tick. It was then I remembered the time critical project another family member is engaged in. Why was I an early adopter of SP1? I then remembered that I am a professional computer whiz and I engaged my super powers. I rebooted Windows. This time it didn't complain. I tried to activate Windows again but this time it told me that I didn't need to as it was all in order. Is the problem fixed? Or will the carpet be yanked out from under my feet in three days time? Tune in next week for another exciting episode.