The Cisco card I bought arrived, but it turns out that this particular card (Aironet 350), while allegedly compatible with the Jornada 710/20, isn't automatically recognized - it needs drivers, and Cisco seem to be making it ridiculously difficult to get them. I've tried registering on their site, but there seems to be no way to get at the necessary drivers now, and they won't give any technical support without a service contract. I suspect that a contract would cost more than the PC did.
What I need, basically, is the driver and installation utility to use an Aironet 350 card on a Handheld PC with a StrongArm processor running Windows for Handheld PC 2000 version 3.0 - this ought to be installable via activesync, or come in a form where it can install off a flash card.
Anyone by any remote chance got the setup disk / files going spare?
Later The guy who sold it to me says he's found the disk and will send it - hopefully that will sort it.