Having problem in Microsoft Outlook Automation

hi guys,

I am working on a windows service in which i'm trying to
automate outlook to send emails periodically based on some criteria.

I developed and tested the code in a console application first and it worked
fine. But when i migrated from console to windows service it started
misbehaving. Its giving various exception as:

1) Here is the exception that I get when running the service. Service cannot
be started. System.Runtime.InteropServices.COMException (0x80020009): Cannot
complete...

Having problem in Microsoft Outlook Automation