Hi Irene,
Actually yes, there is a MouseTracker element in PCIbex, though it’s not officially documented. One concern with it is that it rapidly increases the size of the results file, as it reports a pair of numbers (the X and Y coordinates) every few milliseconds. Since you’re currently limited to 64MB on the PCIbex Farm, it practically imposes drastic limitations there.
I helped someone set up an experiment with the MouseTracker element on their own personal server and they were able to get good data, so if you are still interested and have access to a personal server, let me know and I can help you setting things up (it’s actually quite simple).
Jeremy