Just buy a new keyboard. They are usually easy enough to replace. The manual can usually be found online too.
Here they are on ebay and they are only $15-20 shipped.
When I get home tonight I'll see if i can find replacement instructions. FYI, don't go prying as usually there is a screw that holds it on somewhere.
Also, once you buy the new keyboard, you might be able to sell the old one for a couple bucks. I know there are people that buy them, remove the keys, and then sell individual keys on ebay.