LinuxQuestions.org - Wireless network not working

I'm running SimplyMEPIS 3.3 (running KDE 3.3.2) on my IBM Thinkpad T40, which has an Intel PRO 2100 miniPCI network adapter.

The ethernet works flawlessly.

Now, the wireless connection is another story:

I've set up my wireless connection by using the KDE Control Center -> Internet & Network -> Wireless Network manager. In the Config 1 tab, I set up the details for my network, select 'Load Preset configuration on KDE startup' checkbox, select Config 1 as the 'Configuration to load:' and hit Apply.

Then, upon booting, I get the following messages (this is an exerpt from my /var/log/syslog file):

Code:

Feb 27 22:27:50 tharsan kernel: eth1: No xmit handler.

Feb 27 22:27:50 tharsan kernel: e1000: eth0: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex

Feb 27 22:27:50 tharsan kernel: eth1: No xmit handler.

Feb 27 22:27:50 tharsan last message repeated 10 times

And I do see these warnings in the verbose bootup messages as well.

Now, shortly after starting KDE, if I open KWiFiManager, it tells me that I am indeed connected to my wireless network (as setup in the Control Center) but strangely I have no IP address.

I did boot into Windows (which uses the same configuration - my router does not use encryption [for now], only MAC address filtering) and I did successfully acquire the correct IP from my router in Windows, so I should be able to in Linux.

On the side, how can I force my eth1 interface to attempt to acquire an IP address manually (i.e. some command I can run)?

Thank you very much in advance
- Tharsan