I have the same problem with WMP54G.

A friend gave me a CD of Knoppix 3.9 recently. This is the Linux distro that operates entirely from the CD. It boots my PC, etc., but I can't reach the Internet. This is probably because I'm on a wireless setup. I CAN reach the Net if I plug into the router by cable.

My wireless card is a Linksys WMP54G and the router is a Linksys WRT55AG.

I went to some of the Knoppix forums which recommended some scripting, but since the OS isn't installed on the hard drive, but remains on the CD, you can't write any changes.

I posted on Linksys' own forum, but no answers so far.