Vista - Broadcom driver installation error

I recently installed Windows Vista Beta 2 x64 on a new laptop I purchased
(1.8GHz Turion 64, 1 GB ram, 128mb IGP - I believe), and for the most part
everything is running smoothly (I'm starting to look forward to the final
release). I am having some problems installing some drivers but I expected
that as this is not only a beta version but also a 64-bit version. I can live
without the touchpad drivers and the printer drivers, but I would like to get
the Broadcom 802.11g Wireless Network Card working so I can move around a bit
(after all it is a laptop, right?).

While running the installation software for the Broadcom Network driver that
came with my computer I kept recieving an error message: "Setup 1598". I
cannot find an explanation of this error code anywhere but I figure it has
something to do with the new OS.

My question involves the problem I am having when I open up the device
manager and click "Update Driver Software" for my wireless network card. I
choose to search for and install the software and after a minute or so, I am
informed that "Windows encountered a problem installing the driver software
for your device." The message says: "Windows found driver software for your
device but enountered an error while attempting to install it. Broadcom
802.11g Network Adapter. The System cannot find the file specified."

After recieving this message, I went back and tried to update the driver
again, this time instead of automatically searching for and updating the
driver I chose to "Browse my computer for driver software." I then clicked
"Let me pick from a list of device drivers...", selected "Network Adapter"
from the list, and cicked "Have Disk." I browsed to the folder where I had
downloaded the latest version of the driver from my laptop's manufacturer and
clicked OK. After windows tried to install this driver, I recieved the same
error message.

I can understand if the driver cannot be installed, but I would just like to
know more about why I am getting this error message. Anything relating to
this subject would be greatly appriciated.

Thanks,
Mark