Let me add something else here. While getting a good DNS setting (either by DHCP or by manually making the settings in netcardconfig) is important to be able to use URL's on the internet, it's not needed to determine if the network card is working. If you get the other settings right (for example, use 192.168.0.100 rather than 192.168.0.1 for your local IP address), then you should be able to ping the router (or actually any IP address on the internet) without ever using the Domain Name Server. (The Domain Name Server is only used to look up a URL, and is avoided if you supply a numeric IP address.) So put whatever you want in the nameserver setting and then try to ping 192.168.0.1. If you don't get a sucessful ping then you still have a network card issue with Knoppix, and getting a good DNS setting isn't going to help. It's very likely that you do still have a problem, and than once you can resolve this problem then the card will be able to do a netcardconfig using DHCP and the DNS setting will not be an issue at all (it will be set properly automatically).