ubun2

Hi!
I was trying to install ubuntu on my laptop (HP pavillion from 2006), but the system has problems to recognize my wireless card (broadcom bcm43xx).  There appears an icon ``install non-free driver'' on the desktop, but after trying to install it, it reports that the installation failed.  There is almost no message in /var/log/* (the one suggested by the installer).
Also running ``sudo lshw -C network'' I recognise that my wireless card is disabled even though the light on the laptop in ON (and can be toggled on/off).