Firstly, let me say that I've never seen how a laptop's internal keyboard interface with the motherboard. Hence the question.
The thing is I use an external keyboard and monitor, but I like how internal keyboards are, and I simply can't find a decent external keyboard that makes me happy.
So it just occurred to me if it could be possible to interface an internal keyboard through USB or PS/2, so I could use it as an external one... and so I could be happy once and for all.
If anyone wants to know, I ended up buying this keaboard which has a key-layout exactly like a laptop's. It hasn't the touch feel of a real laptop's keyboard (it's noisier), but that was the best I could find at that time.