I think you are "barking up the wrong tree" with ChangeNotify, but that does depend upon how performant this application needs to be. A "cron" job or windows scheduler job that run say every 15 seonds or whatver could be just fine? ChangeNotify type of signals, etc are more complex and may be needed, but don't do that unless necessay.

You are doing the right thing for debugging. But, the "Scheduled Program" has to be from an account on the server machine. NOT your login account on that machine. You have to have an account that can do this whether you are logged in or not.

Update:>
Your title said "suppress the CMD Line Window", but the text didn't talk about that. With Windows, look at the "START" command for a .bat file. You can suppress the cmd line window with options. Here is one URL of many "Start Windows:
http://www.robvanderwoude.com/ntstart.php