What I need to know is if I buy a wired Xbox 360 controller AND a headset, will both of them work like they do on an xbox, except on my computer.

Solution:

Yes, the xbox controller will work but the headset won't. The headset is specially made for the 360 alone.

It does because it is a usb connected controller but sorry the headset wont work i do not know why……

But  you can buy wired xbox 360 controller from http://www.taobaodao.com/goods-1640.html