Command to enable wireless radio?

Can anyone tell me the Vista command line option to enable/disable WLAN Radio?

Rather annoyingly, the Fujitsu Siemens AMILO li 1818 laptop initially
ignores the status of the manual switch to enable/disable WLAN Radio and
always starts-up with radio disabled. (Running Vista Home Premium)

This can be fixed after start-up by manually toggling the switch off/on,
using the Windows Mobility Centre or asking the Network and Sharing Centre to
Diagnose why Windows can't access a network.

The latter two options imply there is a command which I could include in a
start-up script. What is this command?

(PS disabling/enabling the WLAN Network Connection doesn't achieve this)

Please Help someone?