On 64-bit systems everything in System32 is 64-bit.
How do I tell what is 32 bit and what is 64 bit.
comdlg32.dll is in both System32 and SysWOW64 is 32 bit so I have to change it in both.
shell32.dll is also in both but is 64 bit so I only need to change it in System32.
How do you know, beforehand, what is 32 bit or 64 bit and where you will have to change it?