Just to confirm, a wireless controller with a plug and play charger kit, is just that. The wire only charges and powers the controller. There is NO data transfer over the wire, it is all wireless. If you want to use a wireless controller on your computer you need the wireless dongle, which is actually pretty cheap now when bundled with a controller on amazon. You can then sync any wireless 360 controller to your PC.
I saw someone post a page back that this is wrong. But you are wrong. This is how it is.