Getting WPA2-PSK

[Jordy Dickinson]

Hey, I've never used a mailing list before, so forgive me if I'm not doing
this right.

I'm trying to set up my network card, but I keep getting this error message.
I type in this:

ifconfig wi0 authmode wpa
>

And I get this:

ieee80211_load_module: load the wlan_xauth module by hand for now.
> ifconfig: SIOCS80211: Invalid argument
>

Can anybody tell me what I'm doing wrong?

Thanks,
Jordy