So basically, officially, and easily, you cannot, however if you think you're at the right skill-set, and have the time/patience, then use the teardown and try to do it yourself. You'll probably also be voiding warranty, so unless you're rather experienced and not under applecare I wouldn't suggest you do it.

Yes they're selling keyboard on eBay. Unfortunately you can't replace them on the Unibody Macs. The keyboards are so emplaced that removing them without tearing the top is impossible. You have to replace the Upper Case. We would need to know your exact machine to direct you to the exact keyboard.

At least officially that is not possible, my apple parts supplier can only look up the entire top case including keyboard as a part number, BUT people on ebay are selling the keyboard by itself so perhaps you have hope after all ... if I remember correctly there are many, MANY screws attaching the keyboard to the top cover ..

http://cgi.ebay.com/APPLE-MacBook-PRO-47...

Don't know if its against the rules to post ebay links ... if so sorry ...

So .. yes, you can but its a pain in the backside, get some cups for the tiny screws if you are going ahead with the repair as they are gone as soon as they hit the floor ...

Actually, we've managed to pull it off, BUT there are well over 50 tiny tiny screws and it's tricky. See steps 29-32 here.

Hey Charbs, just wondering what happened here. the same thing happened to my mac. same problems aswell. Right arrow key and the left Shift key doesnt work. Any Help would be appreciated.

if the keys stick that is causing the problem, try to remove the key cap and clean it with alcohol.

Yes you can replaced the keyboard on a Macbook Pro Unibody. In fact, I have successfully replaced several. However, it does require patients and the hands of a surgeon. I'm really not sure why some of you "Professionals" who suggest that it is impossible when all of you know that it is very possible to replace the keyboard on a Macbook Pro Unibody. Guess you guys need to sell top cases.