Here's what I found (finally):
Broadcom 43224AG 802.11a/b/g/draft-n Wi-Fi Adapter
Used the Vista driver and worked fine. Guess either will work. Thanks for the suggestions ThisIsNot.
And just a quick rundown on the capabilities of Ion: I installed Aion (will get to Guild Wars soon) and it runs at 9fps on average in a low-density area. In a high-density area, it would drop to about 3fps on average. I also ran it at max resolution (1366 X 768) and at a lower resolution (1280 X 720) and it ran just the same. Effects and whatnot were all set to minimum. Oddly enough, it ran a lot better yesterday at low-to-medium settings (let the game automatically detect hardware and set settings). I'll continue testing and mess around with some settings. Also, Windows 7 runs beautifully, Aero and all.
Has anyone done any overclocking yet? This is something I have no experience with, so hopefully someone can come along and explain and write up a guide.