Here is what I did to get my broadcom wireless working.
-Plugged my router directly into my laptop to access the internet.
-After installation I opened Applications--System Tools--add/remove software
-Do a search for b43
-Installed first 2 choices
*utility for extracting Broadcom 43xx firmware--b43-fwcutter
*installer package for firmware for the b43 driver--firmware-b43-installer
IN TERNINAL
-ran "sudo modprobe b43" without quotes
-ran "lsmod | grep b43" to make sure the drivers were listed
-next ran "ifconfig eth0 up" this may be wlan0 for some
-lastly rebooted pc.
WIRELESS IS UP AND RUNNING!!!!
Still being a linux noob myself, I wrote this for similer people. Hope this helps.
P.S> You may even be able to download the drivers b43 to usb from another pc, then move them into /lib/firmware then run the same commands in terminal if unable to access a modem.
If i have made any errors please feel free to let me know.