Does backtrack support mutilple monitors, if so how do i configure this, as ive looked for ages and cant find any settings

On a separate note, I was using kismet and ive read that in the flag column
y- wep encrytion
n=no encyption
0 = other

but on my own network in the flag column it says nothing? What does this mean
If I press enter on my netwrok for more details it says the following.

Encrypt : WEP TKIP WPA

If my network is WPA is it still possible to crack?

Cheers calypso