Just thought I'd drop a note for anyone else who might find this information useful. I have a laptop with a Broadcom BCM4401 onboard 10/100 ethernet, and I was able to use the builtin b44 driver that came with the Linux kernel. Wasn't as fast as the bcm4400 drivers from Broadcom's website, but was more than sufficient to get online and download the "proper" ones. Also might I point out that when I installed Fedora, it automatically detected and installed it for me with the b44 driver, without any action on my part.