How to tear a laptop apart? HPZX5180

I have a HPZX5180 with just 512 memory and want to give it some more!!! I know how to get to the single slot on the bottom but Where and How do I get to the other slot?Is there a total breakdown on how to take the laptop apart? I feel comfortable doing it since I done about 1 dozen laptop before for Dell to toshiba to gateways. I looked in the manuals but didn't see anything about the hidden memory/ Anyone got a link to something?

 

Any help:
http://h10025.www1.hp.com/ewfrf/wc/...s&lc=en&dlc=en&product=3185006&dlc=en&lang=en

You will have to add your complete model number to get YOUR schematic.
Go to HP website, type in your complete model number, space, then type specifications, which will bring up (like the link above) the helper.