The wireless how-to is so old as to be entirely worthless. The Lucent/orinoco series of card is entirely supported, actually, the best supported under linux aside from possibly those $200 cisco cards that I can only drool about.
What exactly do you need to set? essid refers to the name of the wireless network, sens, frag, rts, nwid you can all leave at defaults. rate is probably defaulted to auto, which is where it should be, and iwspy and iwpriv are utilities to further tweak the aspects of the card.
Also, if you want answers before the time I next reply, search through the forums using just the keyword "wireless" and you'll probably find more out that you ever wanted to know.