I show you how to use the "Error Provider"&"ToolTips" In Microsoft Visual Studio 2008 Code: Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim Tips As New ToolTip Tips.SetToolTip(TextBox1, "This is where you will type your name") End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim ierror As New ErrorProvider If CheckBox1.Checked = False Then ierror.SetError(CheckBox1 ...