[tlug] How to Re-Enable wlan0?

["Stephen J. Turnbull" <stephen@example.com>]

CL writes:
 > Kubuntu 8.10 on a Lenovo R-61

 > needed it during a client visit.  KNetworkmanager says *wlan0 wireless 
 > disabled* and, when the mouse pointer hovers over the icon it reports 
 > wlan0 as "down" and eth0 as "activated."

On the SONY Vaio there's a physical switch (on the front edge under
the keyboard) that my wife didn't know was there but our daughter
keeps knocking into the "off" position, making it difficult to
communicate with the Internet and the printer (ooh, panic!!)

Maybe there's such a switch on the Lenovo?