I have ubuntu 10.10 installed,
i am using a gateway NV54 with a Atheros AR928X/AR5009 wireless network card
i think have everything install to do crack an WEP netowork

whenever i try to run the command to crack: aireplay-ng 3c:ea:4f:1d:16:b9 -i iface --chopchop
i get
Interface 3c:ea:4f:1d:16:b9:
ioctl(SIOCGIFINDEX) failed: No such device

i read somewhere at is because i don't have the right drivers?
or am i using the wrong command?

I have tryed many thing and can't get it to work