I often get my mom to share her screen so I can help her with something. But when I'm done, I don't know how to stop screen sharing so the video window returns. Usually, in the bottom right corner will be a box that says "her computer" (forgot what it says right now). The only way I know how to get back to the video screen is to close that box. But it disconnects us and we have to call each other again. I am sure there is a simpler way but cannot find it. I love Ichat and screen sharing though. thanks for your help.