Well, nearly everything works. The key to the right of the O key doesn't work, and neither does the Control key or the Otion key. I've been managing for the evening by using coy-and-aste with the missing letter, but this ost is much more amusing this way, don't you think?
I'm going to try taking the thing aart again and reseating the keyboard's ribbon cable, in case that does the trick. It's certainly ossible I didn't reseat it right when I installed the hard drive yesterday.