I have a HP dv6000 laptop on Knoppix 5.0.1. Its WiFi card uses a bcm4311 chipset, but I can't get it to connect to a wireless network.

I tried ndiswrapper, which complained about an "Invalid argument" on modprobe. This usually means that the kernel, ndiswrapper and/or gcc versions do not match, but they do.

Then I heard about bcm43xx-fwcutter and tried it. I didn't notice any problem, however nothing seems to have changed.

eth1 (which I suppose is the WiFi interface, although I don't know how to check) shows up in ifconfig -a (not in ifconfig, since it doesn't work), but won't go up. KNetworkManager doesn't detect any wireless interface.

There were nothing about eth1 in /etc/network/interfaces, so I tried adding the following lines:
auto eth1
iface eth1 inet dhcp

How can I get this network card to work?

Thanks in advance