BTC wrote:

I just set up Outlook 2003

The email account I set up tested ok with the test option in the
program. However, I am not able to send or receive emails.

When I hit send/receive, a window pops up and closes in a flash and
nothing happens.

Any idea what is causing this?

Enable diagnostic logging and look in the log. It may give you a clue
what's happening.
http://support.microsoft.com/kb/300479/en-us

Also check the Event Log.
--
Brian Tillman