Go here to download the patch and read the command to put the card into monitor mode. Btw, it is monitor mode, not promiscuos mode.

http://airsnort.shmoo.com/orinocoinfo.html

from kismet wireless forum:

"Posted by: mrdquick
Subject: orinoco patch kernel ver 2.4.20
Date: 04:21:00 28/02/2003

> Hello all. I had previously used the orinoco patch, ver.09b-packet1, successfully on kernel ver 2.4.18. However, after upgrading to 2.4.20 and attempting to repatch I recieve errors on orinoco.c. I have also tried ver. 11b-patch, and received the same errors. Is there an updated patch to use?
>
> Thanks In Advance,
> itallushrt

I just install the latest pcmcia-cs package. Download the orinoco drivers provided by the orinoco website for linux. Untar the drivers in any directory. In the orinoco directory make a directory called wireless. Copy the entire contents of the orinoco directory you must untared to the wireless directory which you just created. copy the patch (pcmcia-cs-3.2.1-orinoco-patch.diff) to the orinoco directory (parent to wireless). in the orinoco directory run the patch like "patch -p0 < pcmcia-cs-3.2.1-orinoco-patch.diff"
it will patch the wireless drivers for the orinoco. run "make" in the wireless directory. then run make install. It will install the drivers over the kernel drivers or whichever is being used, go figure and restart your pcmcia card services "service pcmcia restart" It should work. do a iwpriv eth0 and it should show monitor at the bottom. Hope this helps "

You would have to remaster your knoppix version in order to get it working.