how do I access the hidden compartment to add another 1 gig stick of ram?

Tony, August 2009

tony, it's quite simple. You have to remove the keyboard.
Remove two screws at the bottom (look for keyboard logo).
On your keyboard you can see 4 clips (between esc and f1, f4/f5 etc.) Unlock the clips and your keyboard is ready to remove. Lift up, top towards you. Underneath you see the memory slot.

jur, August 2009