Neighbor Joshua Wright has reverse engineered the Microchip Zena Zigbee sniffer's USB protocol, allowing packets to be dumped and channels to be hopped from Linux. Kismet support is the next step.
The EZ430RF2500 uses similar tricks in Windows with its HID driver, making Linux support quite difficult. If you have a Windows machine and are interested in doing the same to the RF2500 kit, please send an email my way, with a carbon copy to Josh.
<travis at radiantmachines.com>