WEP Mode: Bad Value?

[James Jeffery]

Right this is what im doing to connect my box to the internet. I have just
added a 128-bit password to my wireless box because it was getting used by
people outsid using standard WPA. This is what im doing:

ifconfig rum0 inet 192.168.2.8 netmask 0xff000000 ssid belkin54g \ wepmode
on wepkey 0xf5d04e6cb3352c6b13cd468b27 weptxtkey 1

and it retturns with

ifconfig wepmode: bad value

if i remove the wepmode part (as a test) i then get:

ifconfig wepkey: bad value

Anyone got any idea whats going on here?