Configuring wireless Interface and Ethernet adapter

I recently installed Ubuntu and Internet works fine with cable through eth0 Ethernet Interface. I am however unable to configure the wireless LAN using eth1:

Network Diagnosis:
loopback io: works fine
eth0: works fine
eth1: cannot configure, no HW config
eth1:avahi: looks like it is configured for the wireless adapter (HW address available, multicast, etc.)but the systems says: "interface not exisiting" when I want to edit/config it.

HW diagnosis:
huerland@huerland-laptop:~$ sudo lshw -C network
  *-network:0
       description: Ethernet interface
       product: 82540EP Gigabit Ethernet Controller (Mobile)
       vendor: Intel Corporation
       physical id: 1
       bus info: pci@0000:02:01.0
       logical name: eth0
       version: 03
       serial: 00:0d:60:fe:57:26
       size: 100MB/s
       capacity: 1GB/s
       width: 32 bits
       clock: 66MHz
       capabilities: pm bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.20-k2-NAPI duplex=full firmware=N/A ip=192.168.1.45 latency=64 link=yes mingnt=255 module=e1000 multicast=yes port=twisted pair speed=100MB/s
  *-network:1
       description: Wireless interface
       product: PRO/Wireless LAN 2100 3B Mini PCI Adapter
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:02:02.0
       logical name: eth1
       version: 04
       serial: 00:0c:f1:4e:ac:5f
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ipw2100 driverversion=git-1.2.2 firmware=712.0.3:3:00000001 latency=64 link=no maxlatency=34 mingnt=2 module=ipw2100 multicast=yes wireless=unassociated
huerland@huerland-laptop:~$

Can anybody help? Where can I change Ethernet settings?
Thanks
Andreas