I bought Skyrim for xbox now I have a decent computer, bought it and just 10 minutes ago tried putting the [censored] key into Steam to activate it "INVALID CD KEY, YOU MAD BRO!?". [censored] YEAH I'M MAD.
EDIT: Not normally like this, but when it's on the weekend (WHY NO SUPPORT ON THE WEEKENDS WE ALL HAVE TO WORK ON THE WEEKENDS TOO, YOU KNOW) really gets me pissed. 4-6 days via email for Steam support, [censored] that.
First of all the chances of getting two sepearate sealed copies of the game with mis-printed cd-keys are so slim its astronomical. Second support staff work 12 hour shifts five days a week. They deserve a break from all the teen tards and anus hats that phone them demanding job loses due to the users Id10T errors. Expectiing them to work, during the summer weekend when people are on holiday is foolhardy.
Now as for the key;
Type in all capitals
Either leave spaces or insert - as required
Type it exactly as you see it. O and 0 are easily confused by many