br14n, which broadcom chipset is it? You may have to go into hardware configuration and set it up for ndiswrapper - try the two drivers that start with "bc". It likely will work it just doesn't configure itself automatically like the native linux wifi drivers do - those "just work". Broadcom will likely work it may just need a few clicks....
Also there are some additional linux broadcom drivers in the repositories that may work for you too. Search "broadcom" in synaptic.