Question for the techies!

If my laptop internal wireless network adapter is dead (The wifi light on the side of the laptop doesn't even light up and the computer can't even find the hardware) can I just buy one of those USB wireless network adapters to use as a work around?

Like this one?

http://www.amazon.com/Medialink-Wireless-Adapter-802-11n-Compatible/dp/B002RM08RE/ref=sr_1_1?ie=UTF8&qid=1302108117&sr=8-1