Thanks, that's what I thought. I was getting that annoying MS nag bar across the screen for updating to 8.1. I was pleased with 8.0 but finally clicked the upgrade just to stop the nagging.
It was seamless, no product key needed.
My annoyance now is not having the product key, but thanks to belarc site, got it.
I am still angry with Dell for failing to help on this.