I think we started with removing the keyboard, or maybe it was the part with the speakers and power button. There are snaps around the edges. Some parts are conneced by thin flex cables so be careful so you don't break them. There are screws from the bottom of the laptop that hold the top on and also snaps around the edge. There's a screw when you remove the hard drive too I think... We removed the CD drive too.
To get the top of you also need to disconnect some cables. Backup battery, buttons to the left etc... The display is connected with two connectors, both need to be disconnected. The antennaes for the wireless card needs to be removed and the wireless card can be removed too. You then have to unscrew the display
I think to get any further.
I don't remember, but there might be screws holding down the plastic top part below the keyboard too. When the plastic comes off there is still some metal screens over the mainboard, think they were screwed down...
When we got down to the mainboard we just reheated the connections and added a little solder, we didn't figure out how to get to the bottom of the card. I think we later realized that it was no idea, maybe it was that the pins from the connector didn't go through the board...
If you don't have much soldering or disassembly experience I suggest you get help from someone who does, it was a bit tricky. Good luck, and be careful.