>Sometimes, when I display a message box, I see it as another task in the task bar. Is there a way to avoid that?

Tests with the code below support at least one answer: Calling the MessageBox.Show method (or MsgBox) within the context of another form, even one that is not visible, eliminates the appearance of the message box as a task. Showing a message box outside of a form, at least in this test, results in a taskbar button.

Imports System.windows.forms

Module module1
   Sub Main()
      MessageBox.Show("This is the modules's Messagebox.Show call.", "Module MessageBox")
      ' MsgBox("This is the modules's MsgBox call.", MsgBoxStyle.Information, "Module MsgBox Function")
      Dim MsgTest As New MsgTest
   End Sub
End Module

Public Class MsgTest
   Inherits System.Windows.Forms.Form

   Public Sub New()
      MessageBox.Show(Me, "This is the form's Messagebox.Show call.", "Form MessageBox")
      ' MsgBox("This is the form's MsgBox call.", MsgBoxStyle.Information, "Form MsgBox")
   End Sub
End Class