I have several questions regarding backtrack, I did do research but so far it hasn't helped, also searched related problems etc.

I'm using backtrack 4 beta -> the live cd

first of all, I can't connect to a network..

I first tried using

/etc/init.d/NetworkManager start
And then just add a connection to my wlan0 (my router, a linksys)
I choose WPA, and gave in my key

but when it connects, the state just goes to 'configuring' and after a while it goes to disconnected..

I also tried it with a WEP key, same effect..

I just tried a different method
ifconfig wlan0 down
iwconfig wlan0 essid linksys key "s:<thekey>"  
ifconfig wlan0 up
(I was under the impression that this was the way to do it?

So that's my first problem, I don't know how to connect to a wireless network..

Second problem is, I bought an MSI star key 2.0 but when I use the bluescanner, it can't detect anything, I think it's because it doesn't detect the device? (Is this normal? Or should I install a driver for it? )

Kind regards