The above is from memory so there may be the odd extra screw in there somewhere to remove but that's the basics. I'm sure someone on here can give you a more detailed rundown, but if I can do it anyone can (trust me)!!
Just as a quick aside, on my replacement one the screen illuminates but the buttons don't, I;m sure they did when I first fitted it, any advice? Got it from e-bay so can;t take it back!!