Evidently your MAC address is a big, giant secret, because it's nearly impossible to find on your WinMo phone (it's not under any of the device settings).However, here's the trick:On Windows Mobile 6.1 and higher, dial #43574357* (I know a lot of these "dial codes" don't work on the Omnia i910, but I can verify that this one does). This code will launch a screen that shows all your device