[CentOS] Obtaining a newer Broadcomm (bcm43xx) driver for CentOS 5

Thu Jan 8 00:56:48 UTC 2009
Bart Schaefer <barton.schaefer at gmail.com>

I'm using CentOS 5 (w/all latest updates as of 2008-01-06) on an HP
laptop -- in fact, the exact laptop described here:
   http://wiki.centos.org/HowTos/Laptops/HP/Pavilion-ze5300_Series

Ever since I switched from SHARED to OPEN authentication (and hence
from using ndiswrapper to the bcm43xx module, as explained on that
wiki page), I've been having packet loss and/or collision on the
wireless device, to the point that recently I've needed to plug in to
a wired network in order to get yum updates.  I'd like to try
installing a newer version of the driver, but I'm having a fail on
searching for the sources; I don't want to build an entire new kernel.

Does anyone have a pointer to those driver sources or better yet to a
DKMS or similar package for them?