I'm tinkering with an LCIII, getting ready to sell it. I have three 16MB modules for this type of computer. Do they have to go in matched pairs? And should I attempt adding RAAM without an ESD mat, or would anyone recommend using one? I know most newer Apples have installed protection against ESD for minor upgrades but am not sure about the older Apples. Finally, is there an easy way to get the case open and access the RAM?