Win7PE SE and Python

I'm trying to create an Win7PE SE image using WinBuilder 082..

I was able to create an working image but i need to find a way to add python to the image.I t

I tried to add WinPython (python portable) to Additional Files but the program stucks and becomes NOT RESPONSING for like an hour (and then i killed it).

What is the best way to add Python to a Win7PE image?

Thanks