No wireless networks with Easynote laptop and Ubuntu 11.04

I assume that all of these laptops use the broadcom wireless adapter but to check open a terminal and type:

sudo lshw -C network

The ethernet and wireless interface information will be shown.
If you indeed have a broadcom interface connect to the internet via an ethernet cable and open the Synaptic Packet Manager and install b43-fwcutter then firmware-b43-installer or open a terminal and type:

sudo apt-get install b43-fwcutter
sudo apt-get install firmware-b43-installer

Remove the the ethernet cable and restart Ubuntu and the wireless network should be available.