You need the old usb drivers.
USB/IO is not available, TCP/IP is the only method supported for syncing (and for anything for that matter).
You\'ll need the older qtopia desktop or intellisync software too.
The default setting in the security tab should work fine, but you can change it to Any if it makes you feel better. Install the new software and make sure you setup IP addresses for both ends of the connection, then test by pinging.
A search for \'ifconfig AND ipconfig\' should tell you about makeing sure your connection is working.
A search for (or visit to ;-)) \'
http://www.sharp.co.uk/zaurus/support/support/htm\' should find you the link for the software (assuming you don\'t have an \'old\' CD lying around with it on).
Simon