wireless

What's the wireless chipset? Post here the results of running "lspci -v" on a console.

this more information:
pyan@pyan-laptop:~$ lspci -v
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03)
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, fast devsel, latency 0
        Capabilities: <access denied>

00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03) (prog-if 00 [VGA])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, fast devsel, latency 0, IRQ 20
        Memory at b0080000 (32-bit, non-prefetchable) [size=512K]
        I/O ports at 1800 [size=8]
        Memory at c0000000 (32-bit, prefetchable) [size=256M]
        Memory at b0000000 (32-bit, non-prefetchable) [size=256K]
        Capabilities: <access denied>

00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: fast devsel
        Memory at 64000000 (32-bit, non-prefetchable) [disabled] [size=512K]
        Capabilities: <access denied>

00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03) (prog-if 00 [UHCI])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 17
        I/O ports at 1820 [size=32]

00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03) (prog-if 00 [UHCI])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 18
        I/O ports at 1840 [size=32]

00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03) (prog-if 00 [UHCI])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 19
        I/O ports at 1860 [size=32]

00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 03) (prog-if 00 [UHCI])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 20
        I/O ports at 1880 [size=32]

00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03) (prog-if 20 [EHCI])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 17
        Memory at b0040000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: <access denied>

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d3) (prog-if 01 [Subtractive decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=06, subordinate=0a, sec-latency=216
        I/O behind bridge: 00003000-00003fff
        Memory behind bridge: b0100000-b01fffff
        Prefetchable memory behind bridge: 0000000060000000-0000000063ffffff
        Capabilities: <access denied>

00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 22
        I/O ports at 1c00 [size=256]
        I/O ports at 18c0 [size=64]
        Memory at b0040800 (32-bit, non-prefetchable) [size=512]
        Memory at b0040400 (32-bit, non-prefetchable) [size=256]
        Capabilities: <access denied>

00:1e.3 Modem: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Modem Controller (rev 03) (prog-if 00 [Generic])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: medium devsel, IRQ 16
        I/O ports at 2400 [size=256]
        I/O ports at 2000 [size=128]
        Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03)
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 03) (prog-if 8a [Master SecP PriP])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 0, IRQ 19
        I/O ports at 01f0 [size=8]
        I/O ports at 03f4 [size=1]
        I/O ports at 0170 [size=8]
        I/O ports at 0374 [size=1]
        I/O ports at 1810 [size=16]

00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 03)
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: medium devsel, IRQ 3
        I/O ports at 20a0 [size=32]

06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 64, IRQ 20
        I/O ports at 3000 [size=256]
        Memory at b0108000 (32-bit, non-prefetchable) [size=256]
        Capabilities: <access denied>

06:06.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
        Subsystem: Hewlett-Packard Company MX6125
        Flags: bus master, fast devsel, latency 32, IRQ 4
        Memory at b0104000 (32-bit, non-prefetchable) [size=8K]

06:09.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 168, IRQ 16
        Memory at b010a000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=06, secondary=07, subordinate=0a, sec-latency=176
        Memory window 0: 60000000-63fff000 (prefetchable)
        Memory window 1: 68000000-6bfff000
        I/O window 0: 00003400-000034ff
        I/O window 1: 00003800-000038ff
        16-bit legacy interface ports at 0001

06:09.2 FireWire (IEEE 1394): Texas Instruments OHCI Compliant IEEE 1394 Host Controller (prog-if 10 [OHCI])
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 32, IRQ 21
        Memory at b0108800 (32-bit, non-prefetchable) [size=2K]
        Memory at b0100000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>

06:09.3 Mass storage controller: Texas Instruments PCIxx21 Integrated FlashMedia Controller
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 57, IRQ 16
        Memory at b0106000 (32-bit, non-prefetchable) [size=8K]
        Capabilities: <access denied>

06:09.4 Generic system peripheral [0805]: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller
        Subsystem: Hewlett-Packard Company Unknown device 3080
        Flags: bus master, medium devsel, latency 57, IRQ 16
        Memory at b0109400 (32-bit, non-prefetchable) [size=256]
        Memory at b0109000 (32-bit, non-prefetchable) [size=256]
        Memory at b0108400 (32-bit, non-prefetchable) [size=256]
        Capabilities: <access denied>

pyan@pyan-laptop:~$

Your wireless card is then the

06:06.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)

The general way to find information is to search with Google with keywords "BCM4318 Ubuntu" for other people that have the same hardware.

I did this search and it lead me to the discussion at
"Wireless BCM4318 AirForce Card"
http://ubuntuforums.org/showthread.php?t=190177

Hope this helps.

Thanks for that information,but It's still not working.

Thanks a lot!!!Now i can use my wireless devices..