Yeah I was thinking he could have just flipped the KEY_WOW64_64KEY or the KEY_WOW64_32KEY on where ever it opened the registry in the installer Or use compatibility mode?
I am still glad he got it working in the end.
Are there any articles from Microsoft folks on why they made the 32/64 compatibility choices they did?
I'm not going to say they're the worst, and they certainly work, but they're also pretty obtuse and "Why would you design a thing like that?"
From memory of the era, the 32/64 bit client transition seemed a bit rushed when Intel had long decreed no home users would need 64-bit, and then AMD promptly started selling the Athlon 64 to anyone who would buy one.