I downloaded prosoft's new typing tutor program and it improved my typing quite a bit. It's easy to use and includes several typing lessons styles that make practicing a little more enjoyable, which is nice, because typing isn't always fun. There's also a game, which I haven't tried yet, but looks interesting.
I've recommended it to my friends who have also been looking to type a little faster, punching one key at a time takes a while.
Charles