How to add WoW64 to Win8PE

I want to make a plain Win8PE with WADK like :

Copype amd64 C:\winpe_amd64

Just like this simple. And the boot result is only a command prompt of X:\Windows\System32
I like to run 32-bit program here but cannot , because lack of Wow64. It seems WoW64 includes :

Wow64.dll
Wow64win.dll
Wow64cpu.dll

Also need some registry and services works.

How can I add the Wow64 to my simple Win8PE. Thanks