I have Office XP with Outlook 2002.  I can receive emails with no problem,
but when I try to send emails through my To: button of the message I get the
following error message for example:

The following recipient(s) could not be reached:

     Scott Milam <scott_milam@charter.net> on 7/22/2005 11:04 PM
           None of your e-mail accounts could send to this recipient.

The strangest thing is that if I type the person's email address in the To:
line then the message goes without a problem.  I have setup my contacts and
address book according to Outlook's instructions, but I'm assuming there must
be a problem with my Address book.  I have contacted my ISP (Charter
Communications) and they say the problem isn't on their end.  Can anyone help?