Before removing the RAM you will need to remove your battery.
Push in the tab on the battery and lift up. The battery should detach very easily.
Remove the single screw securing the RAM compartment and pull up to reveal the RAM.
Push on the small white metal tabs on both sides of a module to unlock it.
The RAM should be stick out at approximately a 45 degree angle. Grasp the RAM by the sides and pull straight out to remove it.