try this or use google (you have to know how to use google HACKING). Google is the best tools I ever had but you have to know how to use.


 
http://www.smallnetbuilder.com/content/view/24244/98/

or

http://www.astalavista.com/

Here's an online video tut [you can also download it] explaining Wep Auditing with :

WEP Auditing with VMplayer, BackTrack, Aircrack and the DLink DWL-G122 USB Adapter.

which might help.


http://www.irongeek.com/i.php?page=videos/glj12-wep-cracking-with-vmplayer-backtrack-aircrack-and-dlink-dwl-g122-usb

Also try this and boot from cd:

http://www.wifiway.org/

LOL how did you do that? Just kidding. I think Backtrack has a place but it should not be a crutch. I think its a good place for those new to Linux to see how tools work. But its so important to  get beyond that. You need to know Linux inside and out to really appreciate how it applies to hacking. Dont get me wrong, I love easy and fast.  But you need to know how to craft an OS to do what you want. Thats what "hacking" is all about in my opinion. Doesn't matter if its an xbox or some interesting piece of hardware, you need to  know how to hack it and make it do what you want. Windows is to restricted.
  While on the subject, how many heavy duty hackers even use a live cd? To be honest I have not met one yet. Even the creator of Backtrack installs it as  a hard drive install. I asked him why and he told me its too slow if you don't. So, if you are going to run it as a HD install, why not pick your favorite distro and really learn it? There are advantages.  You can install new apps with more ease.  In my experience its easier to customize and upgrade a regular Linux distro rather than some "live" cd versions. 
  Again dont get me wrong, I have nothing but respect for Backtrack. Its an important part of the learning process. Just don't get stuck on any OS,whether its windows, Backtrack, Gentoo, etc... The idea is we are hackers and work with what works for us.