5carface, FYI, please post once. If you need a thread moved, contact a moderator.

Did you visit Knoppix's Documentation to see if they had the answer first?

What kind of network card are you using?

Does it detect the network card?

Do you use private addressing (ie., addressing behind the router)?

Have you tried manually setting an ip address using ifconfig eth0 <ip> mask <subnetmask> as well as ifconfig default gw <gateway address> and then setting the DNS addresses in the /etc/resolv.conf or perhaps tried dhclient command to get dhcp addresses (assuming your router is a dhcp server or that you have one on your network)?