Of course. If you want a popup message, just create a dialog box VI with a while loop and the elapsed time function wired to the termination terminal. There are shipping examples of pop-ups that you can look at. If you want a message on a top level VI, use a string indicator and the visible property. Set it true, wait the time you want, set it false.
p.s. Since your question has nothing to do with multifunction DAQ, you should post similar questions to the LabVIEW board.
