I used to play Final Fantasy XI on my 360. I then switched to using it on a computer, but I got too used to having a controller, so I had to go down that road.
The wireless controller should work with a play n charge kit. Microsoft has released basic drivers for the Xbox 360 controller.
For the most part though, you'll want to use some kind of other software to manage it like Xpadder
Be prepared for a lot of "WTF's!??!" as you try to get it to work. Especially if you're running a 64-bit system.