Mal Lansell has just released his xPLZwave software which adds full Z-Wave support to xPL...
"xPL now includes support for Z-Wave RF devices. Based on the Z-Wave SDK from ControlThink, the xPLZwave service for Windows 2000, XP, MCE and Vista provides full control and status reporting of activity in a Z-Wave network.
Operating in conjunction with other xPL applications, it is now possible to fully integrate Z-Wave devices into a home automation system. xPLZWave also includes a configuration application providing full management of a Z-Wave network, with support for inclusion and exclusion of devices and the editing of groups and device parameters...