Raj
Your Cingular rep has you on the wrong track...BES, BlackBerry Enterprise Server is only for companies running Microsoft Exchange (or Lotus Domino or Groupwise) mail servers internally for their employees.
For individuals, you need to use BIS (BlackBerry Internet Service), more information can be found here
BlackBerry - BlackBerry Internet Service | Mobile Email, Browser, Instant Messaging Service & Support
Alternately, I believe you can use BlackBerry Desktop Manager to redirect e-mails, but that would force you to leave your computer on and running to receive and relay the messages as they drop into Outlook.
(Edited to add the disclaimer that as a BES admin, I'm not familiar with nor have tried BIS or Desktop Redirection)