Three implementations are reviewed at: http://www.nytimes.com/2002/02/21/technology/circuits/21STAT.html?ex=101 5282519&ei=1&en=6242701757452110 If you have trouble with this long uri, I'll send you the long article. Hands-On Technolog(eye)s touching the internet mailto:[log in to unmask] voice: 301.949.7599 http://members.home.com/poehlman1/ VICUG-L is the Visually Impaired Computer User Group List. To join or leave the list, send a message to [log in to unmask] In the body of the message, simply type "subscribe vicug-l" or "unsubscribe vicug-l" without the quotations. VICUG-L is archived on the World Wide Web at http://maelstrom.stjohns.edu/archives/vicug-l.html