need run "sudo rfkill unblock wifi" on start up to get the wireless driver to work. This must be entered and wireless driver re-installed every time you start up the HP Pavilion dv2000.
a more permanent solution:
run "sudo gedit /etc/rc.local" in terminal. Scroll to the very bottom and add "rfkill unblock wifi" befor exit 0.
Assuming you have the right driver installed, from the terminal type "echo wl | sudo tee -a /etc/modules". This adds the "wl" or wireless module to boot when ever the computer is restarted.
ref for the above can be found at: http://ubuntuforums.org/showthread.php?t=1618113