Solved Where Do You Get the 64-Bit Windows 8 ISO Download?

Hello. I’m running Windows 8 Pro 32-bit and need some assistance upgrading to the 64-bit version. When Windows 8 first came out, I purchased the $40 version via download. I was under the impression (and still am) that my product key will work for both the 32-bit versions and the 64-bit versions. I have the 32-bit version. I’d like to try out the 64-bit version now. But I’ll be darned if...