Madwifi help needed

[Anne Wilson]

After careful research I ordered wireless PCI cards that were said to "work 
out of the box".  When they didn't I realised that my vendor had said they 
were out of stock.  They had been replaced by X-Micro cards, which are 
atheros cards.  I've been following the madwifi instructions, and have got 
the to part of setting WPA-PSK.  The final command listed in this section is

/usr/sbin/wpa_supplicant -dd -D 
madwifi -iath0 -c /etc/wpa_supplicant/wpa_supplicant.conf

or is it

/usr/sbin/wpa_supplicant -dd -Dmadwifi -iath0 -c/etc/wpa_supplicant/wpa_supplicant.conf ?

Either way, I just got dozens of lines of 'Invalid ESSID line' messages.

What am I doing wrong?

Anne