Broadcom wireless drivers question

I've recently installed Zenwalk on my Thinkpad x140e and I'm trying to understand how to install the Broadcom drivers to get the wifi working. I don't have access to wired internet on the laptop, so I'm attempting to do it manually. I've downloaded the files from the slackbuilds.org site and don't really understand the process of building the package in Slackware. I've downloaded the broadcom-sta tar and the nodebug 64 bit tar, and am just looking for guidance on where to go from here.