1. I've decided that my best route is to get a /folder/file placed in netlogon with enough security that a file can be copied in from a limited group of people. Then have the clients poll %logonserver%\netlogon\folder\file.ini for the content of the message.
2. you could never send a message that contained, "The corporate network is experiencing intermittent short outages caused by a failing router. The failing switch will be replaced at 13:30. Please do not log a fault call unless you experience problems after this time", as most staff couldn't pronounce the terms in the message nor could understand the content. "There are intermittent connectivity problems preventing network communication. This problem should be resolved around 1:30 today. If you continue to experience this problem after that time, contact the help desk"
Thanks for the help and suggestions.
I'll provide code once the product is complete
