I have Leopard. Can I screen share with Tiger or Leopard users over the internet? Also can I screen share to help them do something without the fear of them gaining control of my computer? I was trying to talk someone through changing settings on their mac, and it was painfully slow. If I could have just seen their mac and did it, it would have taken a fraction of the time. I have it enabled on my machine and did not set any users who can control mine.