Does KEY_WOW64_64KEY have any effect on 32 bit Windows?

Question

It appears that specifying the KEY_WOW64_64KEY flag (reference) when accessing a registry key under 32-bit Windows XP has no effect - that is, no error

Answer 1

I can't speak to Windows 2000 or XP, but I know that on Vista and above, KEY_WOW64_64KEY opens the registry key in the 64bit registry if it's a 64bit OS and the 32bit registry if it's a 32bit OS.