how to edit a interface piece?

[Laffs]

Just set all the parent pages for the other windows to visible false there is a button to do this 1 by 1 .... and the general rule is to only take out from the folder you are working in the window that you have actualy modded not all of the updated ones the builder has placed there.....

And never work from the folder that you play the game from! always make a copy of it and use that to mod stuff from.