Aren't there some earlier posts describing how to make the IBM CF hard 
disk fit into the CF slot of the Jornada? I seem to remember it can easily 
be made to work with either [a] a file and a bit of patience or [b] a nano 
angle grinder, such as a Dremel Whatevertheycallthem. 

I'd much prefer a 1GB hard disk to a 512MB CF, but that's just greed.

If you can do without the PCMCIA slot from time to time, I notice that 
PCMCIA hard disks have passed the "consumer threshold" from 2GB to 5GB, 
leaving items like the Kingston 2GB PCMCIA cards quite impressively 
priced.