Wireless woes: upgrade 5.4 to 6.0, wi0, etc...

[Kiffin Gish]

Since I upgraded from FreeBSD 5.4 to 6.0, I cannot for the life of me get
the wi0-interface to work at all (real bummer).

During boot I get the following error message:

    "ieee80211_load_module: load the wlan_wep module by hand for now"

If afterwards I try to fiddle around with ifconfig wepmode on ..., I get the
following error message:

    "ifconfig: SIOCS80211: Operation not permitted"

Googling around and searching through the NOTES, UPDATING etc. I have
discovered (low-level technical) bits and pieces but nothing I can really
bit into. Some stuff about wpa, wpa_supplicant.conf ad infinitum, but before
I start doing something major and messing up my system for good, I though I
would drop this questions amongst the experts.

Have there been any changes made to the wi0 which I should be aware of?

Thanks a lot in advance.

-- 
Kiffin Rex Gish
Gouda, The Netherlands