It will require some programming. A typical appraoch has a BE table in which a record is posted when the desired circumstances are achieved (e.g. record added, modiffied or deleted). The various fron ends have a hidded form with a timer. The onTimer event is fired at the desired interval. When the timer fires, coode checks the BE table for any relevant entries and reacts appropiatly (your pop-up message box) and sets some valur to indicate that the response has been made.
This is frequently discussed and somewhat more detailed under the topic "Boot Users" in these fora. While the details are quite different, the overall approach is the same.
MichaelRed
m.red@att.net
Searching for employment in all the wrong places