I also have a problem like gill but I have succes to reconfigure the network card using netcardconfig from root access from console.
But I found a new problem here.... after I restart the machine.... the configuration back to DHCP again and the IP is given by DHCP server.
For your information... i want a static IP for my machine... and I reconfigure it by netcardconfig.

Why the confguration that change by netcardconfig didn't reload at next restart ?
What I should do ?

regards,
koselan.