>I can get it using WMI, but I am wondering what issues I might have in the wild trying to use WMI?


Network admins preventing script (of any kind) running on their systems...There different versions of WMI for different OSs.



>I have run into a problem using API calls to get a MAC address to identify a machine. On Windows XP if the cable is disconnected, id don't get the adapter's MAC address using NetWkstaTransportEnum.
>