Wireless Internet Missing

Hey all

I bought a used Alienware Aurora and I did a clean windows install.  I installed all the drivers through my serial code but I still can't seem to find out how to get my wireless internet up.  In my device manager under network adapters I have tree items: (1) Blue tooth Device (Perxonal Area Network)  (2) Bluetooth Device (RFCOMM Protocol TDI) and (3) Broadcom Netlink (TM) Gigabit Ethernet.  It says my drivers for all three are up to date.  I assumed the thrid on the list was my wifi card but seeing as I didn't buy the machine new there is a chance it might not have wireless capabilties.  I find that odd, but I wanted to run it by the forums to see if there was anything I was just plain missing.

Thanks for the help.