Ok I want to update my madwifi drivers for my acer asipire one.

I have the USB live edition of BT3, but only on a 1GB flashdrive.(i do have a 2gb flash drive if needed)

I want to try to update my madwifi drivers to see if it solves some issues.
But I'm a little confused if I even can.
First Can I update the drivers because its a live install? or do I have to actually install bt3 on the USB like this post describes
so I can save changes?
Or can I just have a preconfigured live USB stick with the update drivers already on the drive?