ipw2100 and ifup

Hi Newsgroup,

i have successfully installed the ipw2100 driver for my centrino
notebook acer tm 661 lci.
Everything works fine, "iwlist eth1 scan" shows my network and i can
connect to it using iwconfig....
i've configured my network client to dhcp...
but if i do a "ifup eth1" i can't get a ip, gw, ...
in /log/messages comes a:
"localhost kernel: eth1: No xmit handler"

if i configure my device as a static one, it doesn't work also.

What can i do?
With my wired eth0 everything works!
and other laptops can connect to the wlan also.

Greetings and thanks.



---- my /etc/network/interfaces ----
[...]
auto eth1
iface eth1 inet dhcp
name Drahtlose Lan-Karte
wireless_essid heimnetz
[...]