I followed this guide twice, as in I tried once and then had to reformat, then tried again on the fresh rom (TKC 2.0 Alpha, latest sync software).
I'd run synchronize, at which point both the software the Z would go into the sync screen, and then it'd quit with an error 'unable to communicate' or some such.
I'm not sure why it gets to the point where both are communicating then it bottoms out.
The wireless card on the PC is set to 192.168.1.1
The Zaurus is set to 192.168.1.5
And the software is set to USB-TCP/IP 192.168.1.5
The PC Link app on the zaurus is set to USB-TCP/IP 192.168.1.5
From the guide, I think this is right?