joyceh@joyceh-Vostro-2420:~$ lshw -C network
WARNING: you should run this program as super-user.
PCI (sysfs)
*-network UNCLAIMED
description: Network controller
product: Broadcom Corporation <===== This should show something like Wireless 802.11b/g/n, Bluetooth v4.0+LE
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:07:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list
configuration: latency=0
resources: memory:f7c00000-f7c07fff
*-network
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:09:00.0
logical name: eth0
version: 07
serial: 78:45:c4:b7:1b:6b
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.0.105 latency=0 multicast=yes port=MII speed=100Mbit/s
resources: irq:41 ioport:e000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
I can download the driver http://www.dell.com/support/drivers/us/en/04/DriverDetails/Product/vostro-2420?driverId=K61NN&osCode=W764&fileId=3080884333 but how do I install it in Ubuntu??