It couldn't be any easier swapping out ram on unibody macbooks.
Remove the screws on the bottom of the case, pop the bottom cover off, pull back the two levers on each side of the ram sticks and *POP* out comes your old ram.
Insert new ram, put bottom cover back on, screw in the screws and voila!
Shouldn't take more than a few minutes from start to finish.
😀