no wireless in dell 5050 on lucid.. waiting

i have installed lucid in dell 5050 , brodcomm seems installed but its unable to detect the wireless networks..
here is the output of sudo lshw -C network

$ sudo lshw -C network
  *-network
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth0
       version: 05
       serial: 24:b6:fd:02:12:a2
       size: 10MB/s
       capacity: 100MB/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10MB/s
       resources: irq:29 ioport:e000(size=256) memory:f1104000-f1104fff(prefetchable) memory:f1100000-f1103fff(prefetchable)
  *-network UNCLAIMED
       description: Network controller
       product: Broadcom Corporation
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:09:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:f7d00000-f7d03fff