I seem to remember reading a link on a website about connecting a PPC (Ipaq, I think) to a pc card via a sleeve the card could then be connected to a harddrive of virtually any capacity.
Although I doubt if that helps you guys.
Update
Okay dokey,
After a bit of searching I think I found the original thread over on
IpaqHQ, that I'd read discussing PPC's and harddrives, Hopefully it will be a little more useful.
I think it extends to any devices that can hold CF cards.
pcmcia or usb hdd with h2210??