Well, my solution is the one you're not going to want to hear; Perhaps you should use a different Linux OS. I'm guessing you've never used Linux before? I tried using Backtrack a few years ago before my knowledge of Linux and Bash was real great, and I struggled. You can always install specific tools in Ubuntu and practice that way. And also; the password not displaying is standard with unix based OS's.
Secondly, have you tried googling something like "wicd not showing wireless networks" or even searching the backtrack forum before posting? Just a few things that should be first point of call.