Another resource for cracking WEP. With Whoppix, a Prism 2.5 based card, Kismet and this tutorial you can see how easily your WEP could be compromised. The Flash movie is a step-by-step capture of the entire process, capturing 160mb or so of data to grab the WEP key and it has a beat you can dance to. Link.
Cracking WEP in 10 minutes