How to Restore Retail Interface (Help)

[Dexterity]

Hi there, i don't know where to post it so i came here and i will try to get your help.
Is it possible that i get my Interface back to the retail one? I love it and i don't like to play without it, as far as i tryed i only get crash error.
Could you admins give me any file that make it back to the retail one? (I'm mostly talking about the Skillbar fashion look at the moment).