The reason 802.1x is greyed out with WPA-PSK & WPA2-PSK is it isn't relevent with this authentication type. WPA & WPA2 (Enterprise) requires a back-end RADIUS Server that performs the authentication using 802.1x.
There is a bug in XP where 802.1x authentication can be greyed out and stuck on even when using WPA-PSK. So the work around:
From the ZFC "Wireless Network Connection" window where it says "Choose a Wireless Network", click "Changed Advanced Settings" on the right hand side. This will bring up the "Wireless Network Connection Properties" dialog.
Click on the "Wireless Netoworks" tab.
Find your network SSID and "Remove" it from the list.
Click "Add..." to create a new network.
Before entering anyting on the "Association" tab, click the "Authentication" tab and uncheck the "Enable IEEE 802.1x authentication for this network" checkbox.
Then go back to the "Association" tab and enter your SSID, authentication type, encryption method, and enter your shared key.
Then click OK. And you should be good to go.
Edited by Gabrial, 26 September 2010 - 06:25 PM.