This is quite possible because Office is designed so that different versions of the core programs (Word, Excel, PowerPoint) should be able to co-exist on the same computer. If you are upgrading from Office 2003 to Office 2007, there is the interesting possibility of using Outlook 2003 on a computer that otherwise runs Office 2007. The Home and Student edition of Office 2007 doesn’t include Outlook – so what are your options for email, calendar etc once you install the Outlook-less bundle of Office 2007. The Home and Student edition of Office 2007 doesn’t include Outlook – so what are your options for email, calendar etc once you install the Outlook-less bundle of Office 2007? Thanks for joining us! You'll get a welcome message in a few moments.