OK guys I'm writing right now from my Dell inspiron 8000 with Dlink Wireless DWL 650, knoppix launched and connected to the network

The method :

1- cp /KNOPPIX/etc/pcmcia/wlan-ng.opts /ramdisk
2- rm /etc/pcmcia/wlan-ng.opts
3- ln -s /ramdisk/wlan-ng.opts /etc/pcmcia/wlan-ng.opts
4- edit /ramdisk/wlan-ng.opts

To set up SSID : Modify DesiredSSID or SSID value
Modify what you need here.

Remove wireless pcmcia card, replug it.

If you have DHCP it works directly.

Question for KNOPPIX developpers : why not putting the whole /KNOPPIX/etc in ramdisk ? so you can edit it at your need (it's only 14Mo).

My 2 cents

Sioban

PS: There's maybe another method, this one works.