Box Wave Corporation offers syncing and charging cables for the Zaurus 5x00 and 6000 models. This nice little cable has a retractable cord and costs $15 US. There are additional adapters to let you power the Z from an airplane, automobile, wall outlet, and battery. US and European power options are available.
http://www.boxwave.com/I've just ordered mine for a 5500 (minisync) and 6000 (minisync mobile) through Amazon. Has anyone else used these?
Thanks.