Every time I open a new email (attempt to write a new email), the following
message pops up: "A program is trying to access e-mail addresses you
have stored in Outlook."  It then asks me to deny or allow access.  I
have removed my Palm software and a Thunderbird email program.  I am
unaware of any other program that would be trying to synchronize; My
virus scan program has also not found any virus on the computer.  What
may be causing this and how can I make it stop?

These may help:

http://www.add-in-express.com/docs/outlook-security-manager-addins.php

http://www.experts-exchange.com/Applications/MS_Office/Outlook/Q_21075814.html

http://www.experts-exchange.com/Applications/MS_Office/Outlook/Q_20920046.html

Best regards,
Rainbow