I just finished a XBox 360 CNC Jog controller project for the KRMx02 and KRMx01 DIY CNC's.

See it in action here:
[ame=http://www.youtube.com/watch?v=Cjjf3J8gNDw]XBox 360 CNC Jog Controller - YouTube[/ame]

Get the project here:
KRMx02 XBox360 Upgrade