Originally Posted by Tempest4two
However, you can select "register later" and you will have 30 days to complete the registration. This should give you the time you need until new key arrives.
Actually, this is true, but it's not about the product key. After you have inserted the product key during your installation, you have to activate Windows. And for the activation you got 30 days. But you product key must be inserted during installation, so there's no way to get through this. Sorry about that!