I took it apart b4, and took them apart roughly (the notebook is now not with me) as follows:
1. Wiggle or pop out or take out the cover plate, i.e. the cover with power switch and lights
2. You will see 2 or 3 screws, unscrew them and then wiggle the keyboard out (pull the KB towards the screen direction).
3. Be very careful with the ribbon behind the keyboard.
The most diffiuclt part was to re-assemble the ribbon back to the motherboard. Its very easy and took about 10 minutes to replace the KB. Thats about it.