Quick Take: Outlook 2003 contains some of Microsoft Office 2003 System's biggest changes. Microsoft has redesigned this popular e-mail client's interface so that all of the mailboxes and incoming messages now appear along the left-hand side of the screen, while the entire right-hand side is more preview space for highlighted messages. Outlook also provides direct access to instant-messaging accounts. And tablet PC users can now use the pen stylus to mark up e-mail messages, then share those notes with others. For more details, see our complete Microsoft Office System review.