I have a question where one should move the .png files it is written the one to move them to decryptedImages but I find because folder is not it is a file or how to do it.
You have to put all decrypted images in the same folder
You can get the decrypted images either by using the ImageDecrypter from the op or by using the CG pach from the big brother thread
And if you are using the ImageDecrypter (v0.5.2 because the early posted dll only works with jpg images) then you have to copy the *.png files from the image folder in the decryptedImage folder
After you have all images (decrypted images, which you can be viewed in every image viewer) in the same place then you have to define the path to the images in the config.cfg file
And copy the Assembly-CSharp.dll
from the archive in the BigBrother\Managed\ folder
But like i have stated earlier this is only a test version.
hope this explanation helps
And make a backup before you override anything. if it doesn't work