Can anyone comment on why the error below occurs?
If the SQL statement used by this hosted provider fails to give any rows the
system disables the application.
There will be times when nothing is to be submitted to the system so I am a

I'm looking at Sql Server 2005 Notification Services.  It looks like
exactly what I want, but I'm not sure where to start.  I can find
plenty of overviews and 'tutorials' that start with an already
completed project, but I can't seem to find something that goes through

I am a newbie to Notification service and I need your help to determine
what's the best way to handle my situation.  First of all, I need to
determine if Notification service is the right approach.
We have a ASP.NET application that creates purchase orders to various

What is the right way to check if a subscriber exists already?
Subscriber.Add() raises an error if the ID is already there, and
SubscriberEnumeration raises an error if it is not there.
How can I do that without errors? I cannot find a method or property for

Is the best way to update a costings table (so that users can be charged for
successful notifications) to poll the
NS<NotificationClassName>NotificationDistribution view periodically? Or is
there a more natural place in the workflow pipeline for this kind of

Has anyone any experience with creating custom delivery protocol in VB?
I am interested in how to invoke the NotificationStatusCallback() delegate
in a custom delivery protocol using VB?
Thanks a lot in advance

Is this possible? If so, can someone outline the base syntax for this. I
have asked this question a couple of times with no response.
TIA,
Kevin