title: Is it possible to create an Office 2003 VSTO add-in from Visual Studio 2010?
body: <p>We have existing VS 2008 VSTO add-ins for Word 2003 and Excel 2003. We are unable to upgrade the Office version at this time.</p>
  
  <p>We have just tried to upgrade our solution to VS 2010 and it converts and compiles fine, but when building and running the add-in we receive a message saying that the required version of Office is not installed.</p>
  
  <p>Is there any way of getting around this issue (without upgrading to Office 2007 or 2010) so that we can use VS 2010 to build this add-in?</p>