I've already tried setting-up netcardconfig manually and it definitely doesn't work for me. I've decided to use PCLinuxOS instead. It comes with far less software than knoppix but at least the basics are working properly. I'm not sure which distribution it's based-on, if any, but I'd recommend it to anyone having trouble with knoppix. It even lets me use a 1280x1024 resolution, which knoppix didn't. I guess I should'nt be plugging a different system on a knoppix site, but if anyone's fed-up with knoppix not working then I strongly suggest them giving it a go.