Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
have you tried cleaning out the space under the key to make sure you actually need a new one?
 
It stopped working right after I spilled some water on it. Luckily, that's the only damage that occurred. It's had a few days to dry, so I'm thinking it's done for (they key, I mean. The machine seems to be fine other than that).
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.