Depends on how much engineering you would like to do yourself.
If it should be a plug&play approach, then the chip alone won't do I guess. If you're lucky then the chip is on it's own board together with the antenna and so on. I did the same thing with an Apple Airport Express - it has all its WiFi components on one board that can be driven with 3.3V. I used the Ethernet port on it to connect it to my ethernet shield and bring my Arduino online with 802.11n speed