Hey Sid,
OpenCV is a computer vision library which has a lot more flexibilty and control over what you can do to the images produced by the cameras. You’d essentially use the CL-EYE SDK to initialise the multiple cameras and then use the OpenCV SDK to control the images (stitch images together or attempt to compensate for lens distortion around the edges, the list is endless). this might actually be overkill for your needs but an avenue if no other exists.
This is the link to the SDK: http://opencv.willowgarage.com/wiki/
Are you using just the normal PS3 Eyes with standard lenses? what is the width and length of your screen and are you using rear DI? What are you using as your IR source(the hot spotting seems to tell me it might be LEDs)?
I don’t personally use CCV myself so it might be worth trying to find out if/when this update might come out as for the sake of an additional camera, the extra coding using OpenCV etc might not be of benefit to you especially if your primarily hardware competent. If the tracking works on the edge with the amped up illumination, you might want to look at your lighting setup to see if you can come up with something more diffused/balanced.
-Khaled