[Ubuntu 11.04]I am unable to get my network adapter to work

view story

http://linuxfloat.org – Hello,I have a network adapter which I am unable to get to work. If I run "ip addr show dev eth1" it returns "2: eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000". It seems the eth link is down, yet the link leds on the nic adapter sais there is link. What can I do? thanks in advance. (HowTos)