No Wireless Dell Inspiron 1521 Laptop

[sandyd]

download this onto your desktop
http://www.broadcom.com/support/802.11/linux_sta.php

mkdir ~/dev
mv ~/Desktop/hybrid*gz ~/dev
cd ~/dev
tar xvfz hybrid*.gz
cd hybrid*
sudo apt-get install dkms
make
sudo make install
sudo modprobe wl

or, if you have internet, you can simply click here