XBCD drivers are drivers that many prefer to the original microsoft drivers for the 360 controller. Not necessary, in my opinion. I've just got the original.
To adjust controls, open controller.cfg in "xxmy documentsmvp baseball 2005" either import the one written above (which is very similar to mine) or redo your entirely. it may take some fiddling.
Also, make sure your controller is plugged in before starting the game or it will not register.