So I've downloaded the evaluation copy of Windows 7 Enterprise to do a proof of concept study and what I'm reading says the activation code is in the download. However when I installed the software I saw no evidence of any key and it's (even though the eval is supposed to be valid for 90 days) claiming that if I don't register soon it will shut down in four days. What am I missing?

The key is included with the trial - you don't need to enter one. The trial is good for 90 days, but you must activate it with in 10 days. 1. Click the Start Button, and right click on Computer 2. Click on Properties. 3. At the Windows activation section on the bottom, you should have the option to activate.

Thanks very much TrekDozer - that was the ticket.