I upgraded my wife's Windows XP computer to Windows 7 yesterday. I must say Windows 7 is nice. It looks good, and sped up her computer quite a bit.

Unfortunately, even though I purchased a legit copy of the software, I don't know how to activate it. 

Check out this dialog I get whenever I try to activate the software.

It tells me I need to "type an administrator password" and click "Yes" to activate. 

But there is NOWHERE to enter anything in this dialog, and the Yes button is ghosted out.

I am logged on using an administrator account, by the way.

Nice. 

I wonder what happens when my "activation" period is over?