So can you just copy out the reading/writing Matlab bit and show that to us? Otherwise, with your non-commercial and password locked restrictions, all it's really good for is to prove that it can be done and that you did it. If we can't use it, nor see what's behind it to get an idea of how to do it ourselves, then what good is it? I'm not trying to be beligerant (sp?), but I just don't see the point - perhaps I'm not clear on your motivation...