sudo lshw -C network

[sudo] password for raymond: 

  *-network:0             

       description: Network controller

       product: BCM4306 802.11b/g Wireless LAN Controller

       vendor: Broadcom Corporation

       physical id: 2

       bus info: pci@0000:02:02.0

       version: 03

       width: 32 bits

       clock: 33MHz

       capabilities: bus_master

       configuration: driver=b43-pci-bridge latency=64

       resources: irq:18 memory:d0204000-d0205fff

  *-network:1

       description: Ethernet interface

       product: RTL-8139/8139C/8139C+

       vendor: Realtek Semiconductor Co., Ltd.

       physical id: 3

       bus info: pci@0000:02:03.0

       logical name: eth0

       version: 10

       serial: 00:0f:b0:46:c8:87

       size: 10Mbit/s

       capacity: 100Mbit/s

       width: 32 bits

       clock: 33MHz

       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=128 link=no maxlatency=64 mingnt=32 multicast=yes port=MII speed=10Mbit/s

       resources: irq:19 ioport:a000(size=256) memory:d0208800-d02088ff

  *-network DISABLED

       description: Wireless interface

       physical id: 3

       logical name: wlan0

       serial: 00:90:4b:b7:7b:12

       capabilities: ethernet physical wireless

       configuration: broadcast=yes driver=b43 driverversion=2.6.38-8-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg

raymond@raymond-Pavilion-zv5000-PU600UA-ABA:~$ lsb_release -a

No LSB modules are available.

Distributor ID:	Ubuntu

Description:	Ubuntu 11.04

Release:	11.04

Codename:	natty

raymond@raymond-Pavilion-zv5000-PU600UA-ABA:~$  uname -a

Linux raymond-Pavilion-zv5000-PU600UA-ABA 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux

raymond@raymond-Pavilion-zv5000-PU600UA-ABA:~$ sudo rfkill list

0: phy0: Wireless LAN

	Soft blocked: no

	Hard blocked: no

raymond@raymond-Pavilion-zv5000-PU600UA-ABA:~$  dmesg | grep -i firm

[   22.768621] Broadcom 43xx driver loaded [ Features: PNL, Firmware-ID: FW13 ]

[   23.087054] b43-phy0 ERROR: Firmware file "b43/ucode5.fw" not found

[   23.087068] b43-phy0 ERROR: Firmware file "b43-open/ucode5.fw" not found

[   23.087075] b43-phy0 ERROR: You must go to http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website.

raymond@raymond-Pavilion-zv5000-PU600UA-ABA:~$