Microsoft Natural Keyboard 4000 Info
I picked up Microsoft’s newest ergonomic keyboard this weekend and I am settling in to using it this week. Switching to a split keyboard design has definitely affected my typing ability, you see I operate with a four finger and two thumb approach to typing and can pound out a page rather quickly. My copy of Mario teaches typing is not available so I can’t pull a wpm out for you but suffice it to say I can find my way pretty well without the ring or pinky. From what I have read it takes several weeks to adjust to a new keyboard and I am hoping I can get into a real touch-typing habit very soon. There are a few important things to do as soon as you get this keyboard.
1. Update the driver to Microsoft’s latest, as of Sept 18th it is 5.5
2. Hack the Zoom function of the keyboard: Pain in the tech has a great walkthrough on this.
3. You can change the zoom speed in the keyboard settings of Microsoft Keyboard in order to Scroll Faster.
4. Upgrade to iTunes 7. After you have done these steps the keyboard is ready to go.
4.1 By updating the driver and iTunes I was able to get the play/pause button to actually play or pause rather than playing and then pausing half a second later, or vice versa.
Josh Smith is a blogger, database manager and adjunct professor of business and technology. 
Chris Benard updated the thread with a registry edit to map the 4 and 5 keys to universal “Previous” and “Next” buttons. I’ve tested this in Windows Media Player, iTunes, and foobar2000, works great!
http://paininthetech.com/hack_the_microsoft_natural_4000_keyboard#comment-3097