I have a Broadcom 4318 built into a Dell laptop and tried the ndiswrapper on fedora core 6 and I just couldn’t get there. I gave up and decided to try later when I had the time. It was taking me away from FR.
That's the chipset I have in a Linksys PCMCIA card. The included driver (bcm43xx) on Fedora does not work with that chipset for some reason. That's why I went with ndiswrapper and the XP drivers for it.