I did replace successfully a whole keyboard on my vaio pro 11 (popped "O" key in my old keybord ...). But it's not so easy.
1. I bought a new keyboard(japanese) in YAHOO JAPAN auction.
2. For replacement keyboard, I had to do fully teardown my vaio pro, (tweezer was very useful...)
3. to peel a aluminium seal (it must reuse later) for revealing old keyboard,
4. and to break many rivet for remove old keyboard.(I used pin vice and drill).
5. For installation new keybord, I used epoxy bonding and kempton tape.
Now, my vaio pro 11 and keyboard has no problem and run smoothly.
thank you.