Your so close, only a few more steps.
We are going to now crack all that saved information to find the WEP key. We are going to use a program called Aircrack.
1. In the console where airodump was running, we are going to type a code like this:
aircrack-ng "destination of saved information"
- If you remember before we saved all that information to a file of the desktop, so the code will look like this:
aircrack-ng /root/Desktop/savedinformation-01.cap
- Aircrack will search for this file, once found it will ask you what netwok you would like to crack, the network can be chosen by pressing the corresponding numbers next to it.
And that's it, Aircrack will work it's magic..and with 500,000 Initiation Vectors (IV's) it will only take a matter of seconds to crack.
Note: This tutorial, Parts 1, 2 & 3, are for educational purposes only.
Good Luck....and post with all your problems dudes, now get crackin'

Kaz