Tools required: Phillips size 0 screwdriver, plastic tool such as a guitar plectrum or credit card.
Remove your back cover, battery, sim and memory card. Remove the six screws you can see.
Slide something like a credit card in-between the housing and battery compartment, as shown below. This will release the back part of the phone.
With the back of the housing removed, your phone should look like below.
Lift the circuit board up at the bottom, then flip it over from left to right.
You should now have the LCD screen removed completely. Reverse the whole procedure for reassembly.