wifi on atheros almost works - need help

[beerstein]

Hi: I have an Atheros AR 5001X+ chip based PCI card sitting in my notebook.
It works under several other linuxes.
I have loaded all extensions needed (info from posts) and from wiki.
I have WEP encryption open WEP
I tried to use the script at the end of the wiki article on WIFI.

In the script it says in line 13: essid=myessid
do I have to insert my ESSID word in here?

two lines down there is a "wepkey=deadbeafdeadbeaf
I assume this needs my wepkey?

towards the end there is a # USE DHCP
does this mean that I have to set up wlan0 using the panel ?

I do not understand the last three lines :

#!/bin/sh
pkill udhcpc
udhcpc -H box -b -i $ {wlan}

is this another script? Or does this run under the same script?