if it is a dell 1390 like mine you can forget bcm43xx drivers.... ndiswrapper all the way. I have a link I followed to get mine working.....
EDIT: here it is
now, this how-to is written for ubuntu so they will use "sudo" before root commands. In fedora sudo is not setup by default so we will, before doing anything, switch to root.
( enter root password )
then follow the how-to and leave the "sudo " part out, for example
sudo modprobe ndiswrapper
also before you start do this:
yum groupinstall "Development Tools"
yum install kernel-headers kernel-devel
that should keep you from running into any roadblocks