Install your new memory:

"Pop the hood."

Locate the memory slots.

If you have empty slots, push down on the white (beige) tabs at either end.

If you have no empty slots, you'll need to remove a matched pair.

Remove the pair with the smallest value (Mb).

Line up the slots in the memory chip with the tabs in the memory slot.

Align the ends of the memory with the grooves at both ends.

Push down until the white (beige) tabs 'click' up into place.

Repeat for the 2nd memory chip of your matched pair.

Voila! Turn on your machine, accept any changes, and have fun!