I have been tasked with creating a customized Outlook appointment form (Exchange 2003) and writing the contents of the form to a sql database which will be pulled by a SharePoint Calendar. I have been searching online for ways to extend Outlook through Visual Studio. As a C# programmer, is it possible to create a customized Outlook appointment form (add-in perhaps and winform)? Can anyone recommend a tutorial to send me in the right direction? What I am most concerned is how the form would be opened in Outlook. Please advise. Thanks in advance.