When you go to configure a new ACCOUNT in Exchange, it asks for the type of account. At that point, you can choose EXCHANGE instead of, say, POP or IMAP.
From there, you will need to enter the domain name of your Exchange server and username/password.
Here is a great article on <a href=”http://www.petri.co.il/configure_outlook_2003_to_use_rpc_over_http.htm”>how to configure Outlook to connect to Exchange over the Internet, using HTTPS/SSL.</a>
All the best to you,