I finally got it working, but not with any graphical configurator.
The only documentation that applied to my situation is the material at
http://damien.bergamini.free.fr/ral/ral-freebsd.html
I first used the command wpa_passphrase <ssid> <passphrase> and sent the output to /etc/wpa_supplicant.conf and following that I edited the file so it looks like this:
ctrl_interface_group=0
eapol_version=1
ap_scan=1
fast_reauth=1
network={
ssid="myssid"
key_mgmt=WPA-PSK
psk="myencryptedpassphrasefromabovecommand"
}
# end file
Upon executing this, I must open another window and execute 'dhclient ral0' in order to actually do anything AND I must disable the ethernet interface in KDE's control center > network
I am going to try putting this stuff in a script to make it easier.