the macfixit posts show that it is possible, although you need to remove 56 screws. But you can do it. The problem is, I think the part might sell for $90 or so, which might negate the price benefits and hassle, so you might as well buy the higher macbook model to begin with. Which is why Apple upsells you stuff. Granted, you could maybe sell your nonbacklit keyboard for$30-$40, so I think that I'd pay $50 in effect to upgrade to the backlit keyboard. I know I just contradicted myself.