I know, this sounds weird. But, how I often use a laptop is that I have my left hand on the Scorpius, with the right hand on the laptop, so that I can mouse, and at least one hand has a decent keyboard underneath it.
So, on the ThinkPad, I can press a modifier on one keyboard, and the modifier affects keys on the other board.
That doesn't happen on my iBook, which is the only running laptop I have right now (the ThinkPad's been sent off for repairs.)
Any way to make it happen? Or is it a hardware limitation?