Palm keyboard adapters for Zaurus? Options

[derekp]

There are a lot of keyboard options for palm devices, I was wondering what it would take to get any of them working on the Zaurus (at least, hardware wise). Are most of these keyboards standard rs232 interface, or do they normally talk to a palm via the usb signals? If rs232, then it should be easy to wire it up an adapter to use in combination to a Zaurus serial cable. Then it's just a matter of figuring out the protocol, and putting together a driver.
Where can I find out the hardware interface specs of various keyboards, specifically I'm looking at the new logitech key-case keyboard.

Thanks,
--derek