Dell Inspiron 6400 wifi won't work

[myfamiliacc]

I'm also new to Linux.. I just installed Linux lite on my wife's Dell Latitude D410.  She loved her lil. laptop until windows xp crashed.

I would love to surprise her with a Linux reborn laptop, but it needs to have wifi! lol

anyway.. I did the inxi thing on terminal.. and here is what it said..

Code:

System:    Host: sheena-Rose-D410 Kernel: 3.13.0-49-generic i686 (32 bit) Desktop: Xfce 4.11.8 Distro: Ubuntu 14.04 trusty
Machine:   System: Dell (portable) product: Latitude D410
           Mobo: Dell model: 0C7499 Bios: Dell version: A06 date: 07/19/2006
CPU:       Single core Intel Pentium M (-UP-) cache: 2048 KB flags: (nx pae sse sse2) clocked at 800.00 MHz
Graphics:  Card: Intel Mobile 915GM/GMS/910GML Express Graphics Controller
           X.Org: 1.15.1 drivers: intel (unloaded: fbdev,vesa) Resolution: [email protected]
           GLX Renderer: Mesa DRI Intel 915GM x86/MMX/SSE2 GLX Version: 1.4 Mesa 10.1.3
Audio:     Card: Intel 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller driver: snd_intel8x0
           Sound: Advanced Linux Sound Architecture ver: k3.13.0-49-generic
Network:   Card-1: Broadcom BCM4318 [AirForce 54g] 802.11a/b/g PCI Express Transceiver driver: wl
           IF: N/A state: N/A mac: N/A
           Card-2: Broadcom NetXtreme BCM5751 Gigabit Ethernet PCI Express driver: tg3
           IF: eth0 state: up speed: 100 Mbps duplex: full mac: 00:13:72:6c:85:75
Drives:    HDD Total Size: 40.0GB (14.2% used) 1: id: /dev/sda model: FUJITSU_MHT2040A size: 40.0GB
Partition: ID: / size: 36G used: 5.3G (16%) fs: ext4 ID: swap-1 size: 1.06GB used: 0.03GB (3%) fs: swap
RAID:      No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors:   System Temperatures: cpu: 50.5C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 156 Uptime: 17 min Memory: 713.8/993.8MB Client: Shell (bash) inxi: 1.9.17

Please help me surprise my wife.