User-1199946673 posted
Well, before you continue, you need to know this:
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable
behavior and/or deadlock when Office is run in this environment.
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q257757#kb2