Dell WiFi card issue on upgradation

[H.S.Rai]

Found problem while upgrading from 9.10 to 10.04 LTS. Before upgrade,
I did update and upgrade for 9.10 as recommended step and found my
wireless stop functioning. Anyway, I upgraded to 10.04 through wired
connection, and now wish to bring back wireless. Please read below
inline.

On Tue, Nov 10, 2009 at 6:13 AM, H.S.Rai <hardeep.rai at gmail.com> wrote:
> On newly purchases Dell Vostro 1520, I installed Ubuntu 9.10, and
> found WiFi card problem.
>
> "Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)"
>
> On searching Internet, got:
>
> http://jomcode.com/fadhil/?p=59

Now this link is broken.

>From link https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx

on doing " lspci -vnn | grep 14e4 " shows only wired, but not wireless.

===================
output of above command:
====================
08:02.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme
BCM5703 Gigabit Ethernet [14e4:16c7] (rev 10)
	Subsystem: Broadcom Corporation NetXtreme BCM5703 1000Base-T [14e4:0009]
1a:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme
BCM5721 Gigabit Ethernet PCI Express [14e4:1659] (rev 21)
1c:01.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme
BCM5703 Gigabit Ethernet [14e4:16c7] (rev 10)
	Subsystem: Broadcom Corporation NetXtreme BCM5703 1000Base-T [14e4:0009]
======================

Please advise, what to do?

With regards,

-- 
H.S.Rai