Alienware m17x r3 upgrading LCD to Full HD

I have an Alienware m17x r3.
I have a Intel Graphics 3000 HD and my resolution now is: 1600x900
I want to upgrade to 1080P.

I searched for some LCD and there is two kinds. One is 40 Pins and the second on is 50 pins.
I don't know if I have 40 or 50 pins? Does anyone know what I could have?

I also needs to replace the front screen, because it got some scratches. Does the front part include when I buy a new 1080P screen, or do I need to buy it separately?