If you're looking for the alternate keypad between the QWERTY and the numberic (arrows, [HELP], [Do], etc.) then, you'll want the LK-style keyboard. If you use Linux on your x86 box -- and you should ;) -- a few Xmodmap entries and or Xresources entries will give you pretty much full use of the LK-sytle keyboard. On the Mac, it's been quite a while since I've plugged an LK-style keyboard into one -- I recall that it worked pretty much out-of-the-box. I think Terminal.app lets me remap arbitrary key-presses to any escape sequence I want, I assume I could use this to enable the Do/arrow keys etc?