Hello,
Are you frustrated with network setups in KDE?
Do you spend long hours trying to figure out just how to get your network device up in KDE?
Are you fed up with knetwork-manager not displaying your network devices?
Have you spent sleepless nights trying to figure out knetwork-manager but met with no success due to unavailability of proper configuration files?
Well! Don't fret, don't fume, don't bang your head on the wall, just throw out knetworkmanager and install wicd.
Reboot your system and you will get a network icon in the system tray. On opening its window your devices will be listed. Next to each device, on the left is a tiny arrow button that almost gets unnoticed but clicking on that arrow will drop down details for setting up each device, wired or wireless. For wpa wireless setup, in the preferences section select the correct wireless driver. If one doesen't work, try all others till your connection gets established. In my Acer Travelmate 2428, for Lenny, the Intel 2200 device used the ipw2200 driver with a manually added firmware but in wicd, instead of 'ipw', I had to use 'wext' to get proper authenticaton, so once you set your passphrase and encryption type (wep, wpa, ....) try out all drivers if the default does not work.