12.04 - How do I get a Broadcom 4306 [14e4:4324] rev 03 working?

I have a Dell D610 which I have just dual booted with Ubuntu 12.04 LTS.

I get Network->Wireless-> "Firmware missing" in Ubuntu but wireless OK with XP.

Using a terminal I find the Broadcom device is: BCM4306 [14e4:4324] rev 03.

I tried "sudo apt-get install firmware-b43-installer" and got "An unsupported BCM4301, BCM4306 or BCM4306/2 device was found. Use b43legacy firmware (firmware-b43legacy-installer package) instead. Aborting."

I then removed this half installed package.

Then I did "sudo apt-get install firmware-b43legacy-installer".

Appeared to install but I still get "Firmware missing".

I've tried rebooting but no good.