As stated in the introduction...
...this article is based on installing the $15 Windows 8 Upgrade. During that download, the Windows 8 Upgrade Advisor determined that I was running a 64-bit version of Windows 7 and provided me with a download that contained the 64-bit version of Windows 8 Pro. If you are runinng a 32-bit version of Windows 7 and you download the $15 upgrade, you will end up with a 32-bit version of Windows 8 Pro.
Using the $15 Windows 8 Upgrade, there is no way to upgrade a system running a 32-bit version of Windows 7 to a 64-bit version of Windows 8.
Now, as to the screen showing the Product Key being entered, that's in Figure D. Of course I blurred the actual numbers.
It's important to keep in mind that in the case of this type of upgrade deal, you end up with a standard Windows 8 Pro DVD. The upgrade is verified during the download not during the install. As such, you can use this disk to perform a clean install of Windows 8. If you look back over the screen shots, nowhere does the installation procedure look to verify a previous installation of Windows 7 on the hard disk.
With this download, there is no need to reinstall Windows 7 just to install Windows 8.
