Joe Herman has created a pretty good overview and review of using the iPiSoft Motion Capture system using two Microsoft Kinects, showing what is needed, how to set it all up and finally how to actually use it.

iPi Desktop Motion Capture is a markerless motion capture technology that literally puts motion capture at animator’s desktop. You can record a video right at your workplace using 1 or 2 MS Kinects, webcams or inexpensive digital cameras and have it converted to 3D animation on your PC. The technology is accurate, easy to use and affordable.