Christo, A disadvantage of this is that if you are reading changing items, such as computer screens, taking a snapshot and putting it in memory would not work. Mary Emerson E-mail: maryemerson@xxxxxxxxxxxxx Skype name: mkemerson Podcast web site: http://www.emerson.libsyn.com Podcast feed: emerson.libsyn.com/rss To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.