I tried your tool. How to assess total pair wise scores in relation to binding/interaction. Is there any acceptable range or score to say that the two proteins interaction is highly likely?
Here's a list of tools available to check the binding site prediction among two interacting proteins http://www.bioinformatictools.blogspot.in/2012/02/in-silico-binding-site-prediction-in.html I used CASTp for my work long back and it gives decent output. You can try them and let us know if it works for you. Hope this helps.