Thanks guys :)
And how many IV's for a 64bit key :D ?

Thanks again

Hi !

How many IV's are approx needed when trying to crack a 64bit or 128bit wep key, when using the PTW method ?

I know, for a 104bit key, you need between 40.000-85.000 packets (from 50%...

Well, Im sorry to tell you that you can't just install backtrack via Windows XP.
I'll shortly explain how I installed backtrack on my laptop:

1. Download Backtrack 2 final (RLY!?YA RLY!)
2. Burn...

Uum.. do you also have Windows XP or Vista installed on the same computer/harddrive... ?
Have you partinioned your harddrive correctly ?
Have you setup LILO correctly ?