Hello,
I am not sure I understand what you are trying to do, your screenshot is creating a new module, not an article. If you want an iframe in an article I would suggest creating an iframe element directly in an article, not trying to load it through a loadmoduleposition.
Thank you so much for your suggestion. I am getting there.
I still have issues with the frame width which is narrower of the window I want to open. As this contains a flash object, I will have to figure out whether I can find a way to have it resized to fit. Not sure I can do it, though.
Thanks again