My fingers don't even hurt much from using the keyboard anymore after typing so much... so if they do hurt, it probably means that I spent WAY too much time on the computer and that I should rest.

Though it takes some getting used to, ergonomic keyboards are very comfortable and make it harder to miss some keys. Also, just typing the same words won't help as much as typing long string of random letters, IMO.

Don't even look down at the keyboard.... just stare at the screen. You shouldn't need to watch your hands. If you do, then practice till you don't.