Hi ,
you cant try this:
- copy a profile from the example folder
cp /etc/netctl/examples/wireless-wpa /etc/netctl/yourprofilename
- change the profile to your needs (SSID and key)
nano /etc/netctl/yourprofilename
- start the profile
netctl start yourprofilename
- if the above works, enable it as service.
netctl enable yourprofilename
frank