To install the my config files, open Xpadder, make sure the controller is on and connected.
Click the icons next to the drop down boxes (Controller and Note Pad)
Once that is done, you should be able to control the mouse with the left analog stick.
Please note to do this you will need:
Wireless Gaming Receiver
Wireless XBox 360 Controller
My Xpadder Config Files
The drivers for the Wireless Reciver can be installed via the "Search online" in the new device wizard, for Windows XP.
I want to thank sn0ut from the XBMC forums, I used his XBox S Controller layout as a template for mine.